| Total Complexity | 71 |
| Complexity/F | 2.03 |
| Lines of Code | 459 |
| Function Count | 35 |
| Duplicated Lines | 138 |
| Ratio | 30.07 % |
| Changes | 0 | ||
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like load.js often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
| 1 | // TODO: if function not exist try to load from main folder with the name {NameOfFunction}.js |
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| 2 | var Load = function (target, success, error) { |
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| 3 | //url is URL of external file, success is the code |
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| 4 | //to be called from the file, location is the location to |
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| 5 | //insert the <script> element |
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| 6 | this.cfg = {}; |
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| 7 | this.cfg.target = target; |
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| 8 | this.cfg.delay = 0; |
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| 9 | this.cfg.cache = 1; |
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| 10 | |||
| 11 | this.success = success; |
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| 12 | this.error = error; |
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| 13 | |||
| 14 | |||
| 15 | var self = this; |
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| 16 | |||
| 17 | this.target = function (target) { |
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| 18 | self.cfg.target = target; |
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| 19 | return this; |
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| 20 | }; |
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| 21 | |||
| 22 | this.delay = function (delay) { |
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| 23 | self.cfg.delay = delay; |
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| 24 | return this; |
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| 25 | }; |
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| 26 | |||
| 27 | this.cache = function (cache) { |
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| 28 | self.cfg.cache = cache; |
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| 29 | return this; |
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| 30 | }; |
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| 31 | |||
| 32 | this.cacheOff = function () { |
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| 33 | self.cfg.cache = 0; |
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| 34 | |||
| 35 | return this; |
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| 36 | }; |
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| 37 | |||
| 38 | this.cacheOn = function () { |
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| 39 | self.cfg.cache = 1; |
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| 40 | |||
| 41 | return this; |
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| 42 | }; |
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| 43 | |||
| 44 | this.js = function (url) { |
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| 45 | if (typeof self.cfg.delay === 'number' && self.cfg.delay > 1) { |
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| 46 | setTimeout(function () { |
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| 47 | console.log('delayed', self.cfg.delay, url); |
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|
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| 48 | self.loadJs(url, self.cfg.target, self.success, self.error); |
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| 49 | }, |
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| 50 | self.cfg.delay |
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| 51 | ); |
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| 52 | } else { |
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| 53 | console.log('loaded', url); |
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| 54 | self.loadJs(url, self.cfg.target, self.success, self.error); |
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| 55 | } |
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| 56 | return this; |
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| 57 | }; |
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| 58 | this.javascript = this.js; |
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| 59 | this.script = this.js; |
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| 60 | |||
| 61 | |||
| 62 | this.css = function (url) { |
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| 63 | if (typeof self.cfg.delay === 'number' && self.cfg.delay > 1) { |
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| 64 | setTimeout(function () { |
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| 65 | console.log('delayed', self.cfg.delay, url); |
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| 66 | self.loadCss(url, self.cfg.target, self.success, self.error); |
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| 67 | }, |
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| 68 | self.cfg.delay |
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| 69 | ); |
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| 70 | } else { |
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| 71 | console.log('loaded', url); |
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| 72 | self.loadCss(url, self.cfg.target, self.success, self.error); |
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| 73 | } |
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| 74 | return this; |
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| 75 | // |
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| 76 | // if (typeof url === 'object') { |
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| 77 | // //console.log('obj:', obj); |
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| 78 | // |
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| 79 | // for (var i in url) { |
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| 80 | // |
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| 81 | // console.log('load js url[i]', url[i]); |
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| 82 | // |
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| 83 | // try { |
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| 84 | // var exe = includeStyle(url[i], self.cfg.target, success, error); |
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| 85 | // console.log('load js ', url[i], exe); |
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| 86 | // } catch (err) { |
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| 87 | // console.error('!load js ', url[i], err); |
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| 88 | // } |
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| 89 | // } |
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| 90 | // } else { |
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| 91 | // includeHtml(url, self.cfg.target, success, error); |
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| 92 | // // console.error('apiunit obj: is not object:', obj); |
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| 93 | // } |
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| 94 | // return this; |
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| 95 | }; |
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| 96 | this.style = this.css; |
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| 97 | |||
| 98 | // TODO: check if is loaded |
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| 99 | this.loadJs = function (url, target, success, error) { |
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| 100 | var suffix = ''; |
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| 101 | if (typeof self.cfg.cache === 'number' && self.cfg.cache !== 1) { |
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| 102 | suffix = '?' + time(); |
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| 103 | } |
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| 104 | |||
| 105 | if (typeof url === 'object') { |
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| 106 | //console.log('obj:', obj); |
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| 107 | |||
| 108 | for (var i in url) { |
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| 109 | |||
| 110 | console.log('load js url[i]', url[i]); |
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| 111 | |||
| 112 | try { |
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| 113 | var exe = includeJs(url[i] + suffix, target, success, error); |
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| 114 | console.log('load js ', url[i], exe); |
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| 115 | } catch (err) { |
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| 116 | console.error('!load js ', url[i], err); |
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| 117 | } |
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| 118 | } |
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| 119 | } else { |
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| 120 | includeJs(url + suffix, target, success, error); |
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| 121 | // console.error('apiunit obj: is not object:', obj); |
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| 122 | } |
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| 123 | |||
| 124 | return this; |
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| 125 | }; |
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| 126 | |||
| 127 | this.loadCss = function (url, target, success, error) { |
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| 128 | var suffix = ''; |
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| 129 | if (typeof self.cfg.cache === 'number' && self.cfg.cache !== 1) { |
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| 130 | suffix = '?' + time(); |
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| 131 | } |
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| 132 | |||
| 133 | if (typeof url === 'object') { |
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| 134 | //console.log('obj:', obj); |
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| 135 | |||
| 136 | for (var i in url) { |
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| 137 | |||
| 138 | console.log('load CSS url[i]', url[i]); |
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| 139 | |||
| 140 | try { |
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| 141 | var exe = includeStyle(url[i] + suffix, target, success, error); |
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| 142 | console.log('load CSS ', url[i], exe); |
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| 143 | } catch (err) { |
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| 144 | console.error('!load CSS ', url[i], err); |
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| 145 | } |
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| 146 | } |
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| 147 | } else { |
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| 148 | includeStyle(url + suffix, target, success, error); |
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| 149 | // console.error('apiunit obj: is not object:', obj); |
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| 150 | } |
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| 151 | |||
| 152 | return this; |
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| 153 | }; |
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| 154 | |||
| 155 | |||
| 156 | this.html = function (url) { |
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| 157 | if (typeof url === 'object') { |
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| 158 | //console.log('obj:', obj); |
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| 159 | |||
| 160 | for (var i in url) { |
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| 161 | |||
| 162 | console.log('load js url[i]', url[i]); |
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| 163 | |||
| 164 | try { |
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| 165 | var exe = includeHtml(url[i], self.cfg.target, success, error); |
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| 166 | console.log('load js ', url[i], exe); |
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| 167 | } catch (err) { |
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| 168 | console.error('!load js ', url[i], err); |
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| 169 | } |
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| 170 | } |
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| 171 | } else { |
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| 172 | includeHtml(url, self.cfg.target, success, error); |
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| 173 | // console.error('apiunit obj: is not object:', obj); |
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| 174 | } |
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| 175 | return this; |
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| 176 | }; |
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| 177 | |||
| 178 | |||
| 179 | this.image = function (url) { |
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| 180 | if (typeof self.cfg.delay === 'number' && self.cfg.delay > 1) { |
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| 181 | setTimeout(function () { |
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| 182 | console.log('image delayed', self.cfg.delay, url); |
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| 183 | self.loadImage(url, self.cfg.target, self.success, self.error); |
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| 184 | }, |
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| 185 | self.cfg.delay |
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| 186 | ); |
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| 187 | } else { |
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| 188 | console.log('image loaded', url, self.cfg.delay); |
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| 189 | self.loadImage(url, self.cfg.target, self.success, self.error); |
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| 190 | } |
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| 191 | return this; |
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| 192 | }; |
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| 193 | |||
| 194 | this.loadImage = function (url, target, success, error) { |
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| 195 | if (typeof url === 'object') { |
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| 196 | //console.log('obj:', obj); |
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| 197 | |||
| 198 | for (var i in url) { |
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| 199 | |||
| 200 | console.log('load js url[i]', url[i]); |
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| 201 | |||
| 202 | try { |
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| 203 | var exe = includeImage(url[i], target, success, error); |
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| 204 | console.log('load js ', url[i], exe); |
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| 205 | } catch (err) { |
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| 206 | console.error('!load js ', url[i], err); |
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| 207 | } |
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| 208 | } |
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| 209 | } else { |
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| 210 | includeImage(url, self.cfg.target, success, error); |
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| 211 | // console.error('apiunit obj: is not object:', obj); |
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| 212 | } |
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| 213 | return this; |
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| 214 | }; |
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| 215 | |||
| 216 | this.img = this.image; |
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| 217 | |||
| 218 | return this; |
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| 219 | }; |
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| 220 | |||
| 221 | function includeJs(url, target, success, error) { |
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| 222 | var scriptTag = document.createElement('script'); |
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| 223 | scriptTag.src = url; |
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| 224 | scriptTag.type = 'text/javascript'; |
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| 225 | |||
| 226 | scriptTag.onerror = error; |
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| 227 | scriptTag.onload = success; |
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| 228 | scriptTag.onreadystatechange = success; |
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| 229 | |||
| 230 | return getTarget(target).appendChild(scriptTag); |
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| 231 | } |
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| 232 | |||
| 233 | function isEmpty(val) { |
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| 234 | return val == null || typeof val === 'undefined' || val.length < 1; |
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| 235 | } |
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| 236 | |||
| 237 | function getTarget(target) { |
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| 238 | if (isEmpty(target)) { |
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| 239 | console.log('HEAD'); |
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| 240 | target = document.getElementsByTagName('head')[0]; |
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| 241 | if (isEmpty(target)) { |
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| 242 | console.log('BODY'); |
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| 243 | target = document.body; |
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| 244 | } |
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| 245 | } |
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| 246 | return target; |
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| 247 | } |
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| 248 | |||
| 249 | function createTagLink(url, success, error) { |
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| 250 | var link = document.createElement('link'); |
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| 251 | link.href = url; |
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| 252 | link.rel = 'stylesheet'; |
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| 253 | link.type = 'text/css'; |
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| 254 | link.media = 'all'; |
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| 255 | |||
| 256 | link.onerror = error; |
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| 257 | link.onload = success; |
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| 258 | link.onreadystatechange = success; |
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| 259 | |||
| 260 | return link; |
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| 261 | } |
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| 262 | |||
| 263 | |||
| 264 | function getXHRObject() { |
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| 265 | var xhrObj = false; |
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| 266 | try { |
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| 267 | xhrObj = new XMLHttpRequest(); |
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| 268 | } catch (e) { |
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| 269 | var progid = ['MSXML2.XMLHTTP.5.0', 'MSXML2.XMLHTTP.4.0', |
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| 270 | 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP', 'Microsoft.XMLHTTP']; |
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| 271 | for (var i = 0; i < progid.length; ++i) { |
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| 272 | try { |
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| 273 | xhrObj = new ActiveXObject(progid[i]); |
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| 274 | } catch (e) { |
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| 275 | continue; |
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| 276 | } |
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| 277 | break; |
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| 278 | } |
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| 279 | } finally { |
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| 280 | return xhrObj; |
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| 281 | } |
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| 282 | } |
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| 283 | |||
| 284 | // TODO: replce path to id name and check if ID exist |
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| 285 | // FASTEST loading: |
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| 286 | // https://www.oreilly.com/library/view/even-faster-web/9780596803773/ch04.html |
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| 287 | function includeStyle(url, target, success, error) { |
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| 288 | // console.log(target, target == null); |
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| 289 | // return false; |
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| 290 | |||
| 291 | // var xhrObj = getXHRObject(); // defined in the previous example |
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| 292 | // xhrObj.onreadystatechange = |
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| 293 | // function () { |
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| 294 | // if (xhrObj.readyState == 4) { |
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| 295 | // // var scriptElem = document.createElement('script'); |
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| 296 | // var scriptElem = document.createElement('style'); |
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| 297 | // document.getElementsByTagName('head')[0].appendChild(scriptElem); |
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| 298 | // scriptElem.text = xhrObj.responseText; |
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| 299 | // } |
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| 300 | // }; |
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| 301 | // xhrObj.open('GET', url, true); // must be same domain as main page |
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| 302 | // return xhrObj.send(''); |
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| 303 | |||
| 304 | |||
| 305 | var link = createTagLink(url, success, error); |
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| 306 | return getTarget(target).appendChild(link); |
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| 307 | } |
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| 308 | |||
| 309 | |||
| 310 | View Code Duplication | function includeHtml(url, target, success, error) { |
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| 311 | var xhttp; |
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| 312 | |||
| 313 | var el = new E(target); |
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| 314 | var elmnt = el.first(); |
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| 315 | |||
| 316 | if (typeof success !== 'function') { |
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| 317 | success = function () { |
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| 318 | console.log('includeHtml success', "included"); |
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| 319 | } |
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| 320 | } |
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| 321 | |||
| 322 | if (typeof error !== 'function') { |
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| 323 | error = function () { |
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| 324 | console.log('includeHtml error', "Page not found."); |
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| 325 | } |
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| 326 | } |
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| 327 | console.log('includeHtml url', url); |
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| 328 | |||
| 329 | if (url) { |
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| 330 | /* Make an HTTP request using the attribute value as the url name: */ |
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| 331 | xhttp = new XMLHttpRequest(); |
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| 332 | xhttp.onreadystatechange = function () { |
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| 333 | console.log('includeHtml el_id', target); |
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| 334 | |||
| 335 | if (this.readyState == 4) { |
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| 336 | if (this.status == 200) { |
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| 337 | |||
| 338 | elmnt.insertAdjacentHTML('beforeend', this.responseText); |
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| 339 | |||
| 340 | success(this); |
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| 341 | } |
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| 342 | if (this.status == 404) { |
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| 343 | elmnt.innerHTML = "includeHtml Page not found."; |
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| 344 | error(this); |
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| 345 | } |
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| 346 | /* Remove the attribute, and call this function once more: */ |
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| 347 | // includeHtml(url, success, error); |
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| 348 | } |
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| 349 | } |
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| 350 | xhttp.open("GET", url, true); |
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| 351 | xhttp.send(); |
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| 352 | /* Exit the function: */ |
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| 353 | return this; |
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| 354 | } |
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| 355 | return false; |
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| 356 | |||
| 357 | } |
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| 358 | |||
| 359 | // function includeImage(url, target, success, error) { |
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| 360 | |||
| 361 | function includeImage(url, target) { |
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| 362 | console.log('includeImg url: ', url); |
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| 363 | var el = new E(target); |
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| 364 | var elmnt = el.first(); |
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| 365 | |||
| 366 | let img = new Image; |
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| 367 | img.onload = function () { |
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| 368 | console.log("includeImg onload: ", url); |
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| 369 | elmnt.appendChild(img); |
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| 370 | }; |
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| 371 | |||
| 372 | return img.src = url; // erst nach dem Event Listener! |
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| 373 | |||
| 374 | } |
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| 375 | |||
| 376 | |||
| 377 | var time = Date.now || function () { |
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| 378 | return +new Date; |
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| 379 | }; |
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| 380 | |||
| 381 | |||
| 382 | View Code Duplication | var E = function (selector, area, error, success) { |
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| 383 | this.cfg = {}; |
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| 384 | this.cfg.area = document; |
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| 385 | this.cfg.selector = selector; |
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| 386 | this.cfg.exist = false; |
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| 387 | |||
| 388 | this.success = function (elem) { |
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| 389 | console.log("Element elem: ", elem); |
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| 390 | }; |
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| 391 | |||
| 392 | this.error = function (elem) { |
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| 393 | console.error("! Element elem: ", elem); |
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| 394 | }; |
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| 395 | |||
| 396 | if (typeof success === 'function') { |
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| 397 | this.success = success; |
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| 398 | } |
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| 399 | |||
| 400 | if (typeof error === 'function') { |
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| 401 | this.error = error; |
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| 402 | } |
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| 403 | |||
| 404 | |||
| 405 | var self = this; |
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| 406 | |||
| 407 | this.selector = function (selector) { |
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| 408 | self.cfg.selector = selector; |
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| 409 | return this; |
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| 410 | } |
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| 411 | |||
| 412 | this.first = function (error, success) { |
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| 413 | if (typeof success !== 'function') { |
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| 414 | success = self.success; |
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| 415 | } |
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| 416 | if (typeof error !== 'function') { |
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| 417 | error = self.error; |
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| 418 | } |
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| 419 | |||
| 420 | const elem = document.querySelector(self.cfg.selector); |
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| 421 | |||
| 422 | console.log('E first self.cfg.selector', self.cfg.selector); |
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| 423 | console.log('E first elem', elem); |
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| 424 | |||
| 425 | if (elem !== null) { |
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| 426 | self.cfg.exist = true; |
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| 427 | success(elem); |
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| 428 | return elem; |
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| 429 | } else { |
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| 430 | self.cfg.exist = false; |
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| 431 | error(); |
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| 432 | } |
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| 433 | |||
| 434 | return elem; |
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| 435 | } |
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| 436 | |||
| 437 | this.all = function (error, success) { |
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| 438 | if (typeof success !== 'function') { |
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| 439 | success = self.success; |
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| 440 | } |
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| 441 | if (typeof error !== 'function') { |
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| 442 | error = self.error; |
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| 443 | } |
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| 444 | |||
| 445 | const elem = document.querySelectorAll(self.cfg.selector); |
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| 446 | |||
| 447 | console.log('E all self.cfg.selector', self.cfg.selector); |
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| 448 | console.log('E all elem', elem); |
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| 449 | |||
| 450 | if (elem !== null) { |
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| 451 | self.cfg.exist = true; |
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| 452 | success(elem); |
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| 453 | } else { |
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| 454 | self.cfg.exist = false; |
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| 455 | error(elem); |
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| 456 | } |
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| 457 | |||
| 458 | return elem; |
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| 459 | } |
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| 460 | }; |