helpers.js ➔ imgLazyLoad - Code Metrics - Inspection of "imgLazyLoad" - PiedWeb/piedweb-cms-js-helpers - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( a5b8e1...7a57ef )

by Dev

created 2020-05-14 16:36 UTC

helpers.js ➔ imgLazyLoad A

↳ Parent: src/helpers.js

Complexity

Conditions

Size

Total Lines	23
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	5
eloc	16
dl	0
loc	23
rs	9.1333
c	0
b	0
f	0

/**
 * List of all functions
 *
 * - getBlockFromSky(attr)
 * - formToSky(attr)
 *
 * - responsiveImage(string)    Relative to Liip filters
 * - uncloakLinks(attr)
 * - convertFormFromRot13(attr)
 * - readableEmail(attr)
 * - convertImageLinkToWebPLink()
 */

/**
 * Fetch (ajax) function permitting to get block via a POST request
 * (prevent from spam)
 *
 * @param {string} attribute
 */
export function getBlockFromSky(attribute = "data-sky") {
  document.querySelectorAll("[" + attribute + "]").forEach(item => {
    fetch(item.getAttribute(attribute), {
      headers: { "Content-Type": "application/json", Accept: "text/plain" },
      method: "POST",
      // Later: maybe implement sending data form data-post
      // body: JSON.stringify({"contact": (document.getElementById("contact") !== null ? 1: 0)}),
      credentials: "same-origin"
    })
      .then(function(response) {
        return response.text();
      })
      .then(function(body) {
        item.removeAttribute("data-sky");
        item.innerHTML = body;

        // add export function to reDo on document dom ready
        if (typeof onPageLoaded === "function") {

          onPageLoaded();
        }
        if (typeof onDomLoaded === "function") {

          onDomLoaded();
        }
      });
  });
}

/**
 * ajaxify-form
 */
export function formToSky(userOptions = {}) {
  var options = {
    selector: ".ajax-form" // selector for ajax form
  };
  for (var attrname in userOptions) {
var someObject;
for (var key in someObject) {
    if ( ! someObject.hasOwnProperty(key)) {
        continue; // Skip keys from the prototype.
    }

    doSomethingWith(key);
}
    options[attrname] = userOptions[attrname];
  }

  document.querySelectorAll(options.selector).forEach(item => {
    if (item.querySelector("form") !== null) {
      item.querySelector("form").addEventListener("submit", e => {
        e.preventDefault();
        sendFormToSky(e);
      });
    }
  });

  var sendFormToSky = function(form) {
    var $submitButton = getSubmitButton(form);
    if ($submitButton !== null) {
      var initialButton = getSubmitButton(form).outerHTML;

      $submitButton.outerHTML = '<i class="fa fa-spinner fa-spin"></i>';
    }

    //var formData = new FormData();
    var toSend = "";
    for (var i = 0; i < form.srcElement.length; ++i) {
      toSend +=
        encodeURI(form.srcElement[i].name) +
        "=" +
        encodeURI(form.srcElement[i].value) +
        "&";
    }

    var xmlhttp = new XMLHttpRequest();
    xmlhttp.addEventListener(
      "load",
      function() {
        form.srcElement.outerHTML = xmlhttp.responseText;
        formToSky();
      },
      false
    );
    xmlhttp.open("POST", form.srcElement.action, false);
    xmlhttp.setRequestHeader(
      "Content-type",
      "application/x-www-form-urlencoded"
    );
    xmlhttp.send(toSend);
  };

  var renderError = function(error) {

    var msg = "";
    for (var key in error) {
      if (error.hasOwnProperty(key)) {
        var obj = error[key];
        for (var prop in obj) {
          if (obj.hasOwnProperty(prop)) {
            msg += key + " : " + obj[prop] + "<br>";
          }
        }
      }
    }
    return msg;
  };

  var getSubmitButton = function(form) {
    if (form.srcElement.querySelector("[type=submit]") !== null) {
      return form.srcElement.querySelector("[type=submit]");
    }
    if (form.srcElement.getElementsByTagName("button") !== null) {
      return form.srcElement.getElementsByTagName("button");
    }
    return null;
  };
}

/**
 * Transform image's path (src) produce with Liip to responsive path
 *
 * @param {string} src
 */
export function responsiveImage(src) {
  var screenWidth = window.innerWidth;
  if (screenWidth <= 576) {
    src = src.replace("/default/", "/xs/");
  } else if (screenWidth <= 768) {
    src = src.replace("/default/", "/sm/");
  } else if (screenWidth <= 992) {
    src = src.replace("/default/", "/md/");
  } else if (screenWidth <= 1200) {
    src = src.replace("/default/", "/lg/");
  } else {
    // 1200+
    src = src.replace("/default/", "/xl/");
  }

  return src;
}

/**
 * Convert elements wich contain attribute (data-href) in normal link (a href)
 * You can use a callback function to decrypt the link (eg: rot13ToText ;-))
 *
 * @param {string}  attribute
 */
export async function uncloakLinks(attribute = "data-rot") {
  var convertLink = function(element) {
    // fix "bug" with img
    if (element.getAttribute(attribute) === null) {
      var element = element.closest("[" + attribute + "]");
    }
    if (element.getAttribute(attribute) === null) return;
if (a > 0)
    b = 42;
    var link = document.createElement("a");
    var href = element.getAttribute(attribute);
    element.removeAttribute(attribute);
    for (var i = 0, n = element.attributes.length; i < n; i++) {
      link.setAttribute(
        element.attributes[i].nodeName,
        element.attributes[i].nodeValue
      );
    }
    link.innerHTML = element.innerHTML;
    link.setAttribute(
      "href",
      responsiveImage(convertShortchutForLink(rot13ToText(href)))
    );
    element.parentNode.replaceChild(link, element);
    return link;
  };

  var convertThemAll = function(attribute) {
    [].forEach.call(document.querySelectorAll("[" + attribute + "]"), function(
      element
    ) {
      convertLink(element);
    });
  };

  var fireEventLinksBuilt = async function(element, event) {
    await document.dispatchEvent(new Event("linksBuilt"));


    var clickEvent = new Event(event.type);
    element.dispatchEvent(clickEvent);
  };

  var convertLinkOnEvent = async function(event) {
    // convert them all if it's an image (thanks this bug), permit to use gallery (baguetteBox)
    if (event.target.tagName == "IMG") {
      await convertThemAll(attribute);
      var element = event.target;
    } else {
      var element = convertLink(event.target);

    }
    fireEventLinksBuilt(element, event);
  };

  [].forEach.call(document.querySelectorAll("[" + attribute + "]"), function(
    element
  ) {
    element.addEventListener(
      "touchstart",
      function(e) {
        convertLinkOnEvent(e);
      },
      { once: true }
    );
    element.addEventListener(
      "click",
      function(e) {
        convertLinkOnFly(e);
      },
      { once: true }
    );
    element.addEventListener(
      "mouseover",
      function(e) {
        convertInLinksRot13OnFly(e);
      },
      { once: true }
    );
  });
}

/**
 * Convert action attr encoded in rot 13 to normal action with default attr `data-frot`
 *
 * @param {string}  attribute
 */
export function convertFormFromRot13(attribute = "data-frot") {
  [].forEach.call(document.querySelectorAll("[" + attribute + "]"), function(
    element
  ) {
    var action = element.getAttribute(attribute);
    element.removeAttribute(attribute);
    element.setAttribute(
      "action",
      convertShortchutForLink(rot13ToText(action))
    );
  });
}

export function convertShortchutForLink(str) {
  if (str.charAt(0) == "-") {
    return str.replace("-", "http://");
  }
  if (str.charAt(0) == "_") {
    return str.replace("_", "https://");
  }
  if (str.charAt(0) == "@") {
    return str.replace("@", "mailto:");
  }
  return str;
}

/**
 * readableEmail(selector) Transform an email encoded with rot13 in a readable mail (and add mailto:)
 *
 * @param {string}  text
 */
export function readableEmail(selector) {
  document.querySelectorAll(selector).forEach(function(item) {
    var mail = rot13ToText(item.textContent);
    item.innerHTML = '<a href="mailto:' + mail + '">' + mail + "</a>";
    if (selector.charAt(0) == ".") {
      item.classList.remove(selector.substring(1));
    }
  });
}

/**
 * Decode rot13
 *
 * @param {string}  str
 */
export function rot13ToText(str) {
  return str.replace(/[a-zA-Z]/g, function(c) {
    return String.fromCharCode(
      (c <= "Z" ? 90 : 122) >= (c = c.charCodeAt(0) + 13) ? c : c - 26
    );
  });
}

export function testWebPSupport() {
  var elem = document.createElement("canvas");

  if (elem.getContext && elem.getContext("2d")) {
    return elem.toDataURL("image/webp").indexOf("data:image/webp") == 0;

  }

  return false;
}

/**
 * Used in ThemeComponent
 */
export function convertImageLinkToWebPLink() {
  var switchToWebP = function() {
    [].forEach.call(document.querySelectorAll("a[dwl]"), function(element) {
      var href = responsiveImage(element.getAttribute("dwl"));
      element.setAttribute("href", href);
      element.removeAttribute("dwl");
    });
  };

  if (testWebPSupport()) switchToWebP();
if (a > 0)
    b = 42;
}

/**
 * Simple Image Lazy Loader
 * original from : https://davidwalsh.name/lazyload-image-fade
 *
 * @param {string}  attribute
 *
 * @example
 * imgLazyLoad()
 * <span data-img=/img/me.png>Tagada</span> or <img data-img=/img/me.png alt=Tagada>
 *
 * will be converted to
 *
 * <img src=/img/me.png alt=Tagada />
 * 
 * still used in piedvert. To remove ?!
 */
export function imgLazyLoad(attribute = "data-img") {
  [].forEach.call(document.querySelectorAll("[" + attribute + "]"), function(
    img
  ) {
    var newDomImg = document.createElement("img");
    var src = img.getAttribute(attribute);
    img.removeAttribute(attribute);
    for (var i = 0, n = img.attributes.length; i < n; i++) {
      newDomImg.setAttribute(
        img.attributes[i].nodeName,
        img.attributes[i].nodeValue
      );
    }
    if (newDomImg.getAttribute("alt") === null && img.textContent != "") {
      newDomImg.setAttribute("alt", img.textContent);
    }
    newDomImg.setAttribute(
      "src",
      typeof responsiveImage === "function" ? responsiveImage(src) : src
    );
    img.outerHTML = newDomImg.outerHTML;
  });
}


1			/**
2			* List of all functions
3			*
4			* - getBlockFromSky(attr)
5			* - formToSky(attr)
6			*
7			* - responsiveImage(string) Relative to Liip filters
8			* - uncloakLinks(attr)
9			* - convertFormFromRot13(attr)
10			* - readableEmail(attr)
11			* - convertImageLinkToWebPLink()
12			*/
13
14			/**
15			* Fetch (ajax) function permitting to get block via a POST request
16			* (prevent from spam)
17			*
18			* @param {string} attribute
19			*/
20			export function getBlockFromSky(attribute = "data-sky") {
21			document.querySelectorAll("[" + attribute + "]").forEach(item => {
22			fetch(item.getAttribute(attribute), {
23			headers: { "Content-Type": "application/json", Accept: "text/plain" },
24			method: "POST",
25			// Later: maybe implement sending data form data-post
26			// body: JSON.stringify({"contact": (document.getElementById("contact") !== null ? 1: 0)}),
27			credentials: "same-origin"
28			})
29			.then(function(response) {
30			return response.text();
31			})
32			.then(function(body) {
33			item.removeAttribute("data-sky");
34			item.innerHTML = body;
35
36			// add export function to reDo on document dom ready
37			if (typeof onPageLoaded === "function") {
			0 ignored issues – show Bug introduced 2019-02-02 08:11 UTC by Report Bug Copy Issue Report The variable `onPageLoaded` seems to be never declared. If this is a global, consider adding a `/** global: onPageLoaded */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
38			onPageLoaded();
39			}
40			if (typeof onDomLoaded === "function") {
			0 ignored issues – show Bug introduced 2019-02-02 08:11 UTC by Report Bug Copy Issue Report The variable `onDomLoaded` seems to be never declared. If this is a global, consider adding a `/** global: onDomLoaded */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
41			onDomLoaded();
42			}
43			});
44			});
45			}
46
47			/**
48			* ajaxify-form
49			*/
50			export function formToSky(userOptions = {}) {
51			var options = {
52			selector: ".ajax-form" // selector for ajax form
53			};
54			for (var attrname in userOptions) {
			0 ignored issues – show Complexity introduced 2019-02-02 08:11 UTC by Report Bug Copy Issue Report A for in loop automatically includes the property of any prototype object, consider checking the key using `hasOwnProperty`. When iterating over the keys of an object, this includes not only the keys of the object, but also keys contained in the prototype of that object. It is generally a best practice to check for these keys specifically: var someObject; for (var key in someObject) { if ( ! someObject.hasOwnProperty(key)) { continue; // Skip keys from the prototype. } doSomethingWith(key); } Loading history...
55			options[attrname] = userOptions[attrname];
56			}
57
58			document.querySelectorAll(options.selector).forEach(item => {
59			if (item.querySelector("form") !== null) {
60			item.querySelector("form").addEventListener("submit", e => {
61			e.preventDefault();
62			sendFormToSky(e);
63			});
64			}
65			});
66
67			var sendFormToSky = function(form) {
68			var $submitButton = getSubmitButton(form);
69			if ($submitButton !== null) {
70			var initialButton = getSubmitButton(form).outerHTML;
			0 ignored issues – show Unused Code introduced 2019-02-02 08:11 UTC by Report Bug Copy Issue Report The variable `initialButton` seems to be never used. Consider removing it. Loading history...
71			$submitButton.outerHTML = '<i class="fa fa-spinner fa-spin"></i>';
72			}
73
74			//var formData = new FormData();
75			var toSend = "";
76			for (var i = 0; i < form.srcElement.length; ++i) {
77			toSend +=
78			encodeURI(form.srcElement[i].name) +
79			"=" +
80			encodeURI(form.srcElement[i].value) +
81			"&";
82			}
83
84			var xmlhttp = new XMLHttpRequest();
85			xmlhttp.addEventListener(
86			"load",
87			function() {
88			form.srcElement.outerHTML = xmlhttp.responseText;
89			formToSky();
90			},
91			false
92			);
93			xmlhttp.open("POST", form.srcElement.action, false);
94			xmlhttp.setRequestHeader(
95			"Content-type",
96			"application/x-www-form-urlencoded"
97			);
98			xmlhttp.send(toSend);
99			};
100
101			var renderError = function(error) {
			0 ignored issues – show Unused Code introduced 2019-02-02 08:11 UTC by Report Bug Copy Issue Report The variable `renderError` seems to be never used. Consider removing it. Loading history...
102			var msg = "";
103			for (var key in error) {
104			if (error.hasOwnProperty(key)) {
105			var obj = error[key];
106			for (var prop in obj) {
107			if (obj.hasOwnProperty(prop)) {
108			msg += key + " : " + obj[prop] + "<br>";
109			}
110			}
111			}
112			}
113			return msg;
114			};
115
116			var getSubmitButton = function(form) {
117			if (form.srcElement.querySelector("[type=submit]") !== null) {
118			return form.srcElement.querySelector("[type=submit]");
119			}
120			if (form.srcElement.getElementsByTagName("button") !== null) {
121			return form.srcElement.getElementsByTagName("button");
122			}
123			return null;
124			};
125			}
126
127			/**
128			* Transform image's path (src) produce with Liip to responsive path
129			*
130			* @param {string} src
131			*/
132			export function responsiveImage(src) {
133			var screenWidth = window.innerWidth;
134			if (screenWidth <= 576) {
135			src = src.replace("/default/", "/xs/");
136			} else if (screenWidth <= 768) {
137			src = src.replace("/default/", "/sm/");
138			} else if (screenWidth <= 992) {
139			src = src.replace("/default/", "/md/");
140			} else if (screenWidth <= 1200) {
141			src = src.replace("/default/", "/lg/");
142			} else {
143			// 1200+
144			src = src.replace("/default/", "/xl/");
145			}
146
147			return src;
148			}
149
150			/**
151			* Convert elements wich contain attribute (data-href) in normal link (a href)
152			* You can use a callback function to decrypt the link (eg: rot13ToText ;-))
153			*
154			* @param {string} attribute
155			*/
156			export async function uncloakLinks(attribute = "data-rot") {
157			var convertLink = function(element) {
158			// fix "bug" with img
159			if (element.getAttribute(attribute) === null) {
160			var element = element.closest("[" + attribute + "]");
161			}
162			if (element.getAttribute(attribute) === null) return;
			0 ignored issues – show Comprehensibility Best Practice introduced 2020-05-14 15:29 UTC by Report Bug Copy Issue Report Are you sure this return statement is not missing an argument? If this is intended, consider adding an explicit `undefined` like `return undefined;`. Loading history... Coding Style Best Practice introduced 2020-05-14 15:29 UTC by Report Bug Copy Issue Report Curly braces around statements make for more readable code and help prevent bugs when you add further statements. Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0) b = 42; If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0) console.log("a > 0"); b = 42; In this case the statement `b = 42` will always be executed, while the logging statement will be executed conditionally. if (a > 0) { console.log("a > 0"); b = 42; } ensures that the proper code will be executed conditionally no matter how many statements are added or removed. Loading history...
163			var link = document.createElement("a");
164			var href = element.getAttribute(attribute);
165			element.removeAttribute(attribute);
166			for (var i = 0, n = element.attributes.length; i < n; i++) {
167			link.setAttribute(
168			element.attributes[i].nodeName,
169			element.attributes[i].nodeValue
170			);
171			}
172			link.innerHTML = element.innerHTML;
173			link.setAttribute(
174			"href",
175			responsiveImage(convertShortchutForLink(rot13ToText(href)))
176			);
177			element.parentNode.replaceChild(link, element);
178			return link;
179			};
180
181			var convertThemAll = function(attribute) {
182			[].forEach.call(document.querySelectorAll("[" + attribute + "]"), function(
183			element
184			) {
185			convertLink(element);
186			});
187			};
188
189			var fireEventLinksBuilt = async function(element, event) {
190			await document.dispatchEvent(new Event("linksBuilt"));
			0 ignored issues – show Bug introduced 2020-05-14 15:29 UTC by Report Bug Copy Issue Report The variable `Event` seems to be never declared. If this is a global, consider adding a `/** global: Event */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
191
192			var clickEvent = new Event(event.type);
193			element.dispatchEvent(clickEvent);
194			};
195
196			var convertLinkOnEvent = async function(event) {
197			// convert them all if it's an image (thanks this bug), permit to use gallery (baguetteBox)
198			if (event.target.tagName == "IMG") {
199			await convertThemAll(attribute);
200			var element = event.target;
201			} else {
202			var element = convertLink(event.target);
			0 ignored issues – show Comprehensibility Naming Best Practice introduced 2020-05-14 15:29 UTC by Report Bug Copy Issue Report The variable `element` already seems to be declared on line `200`. Consider using another variable name or omitting the `var` keyword. This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. Loading history...
203			}
204			fireEventLinksBuilt(element, event);
205			};
206
207			[].forEach.call(document.querySelectorAll("[" + attribute + "]"), function(
208			element
209			) {
210			element.addEventListener(
211			"touchstart",
212			function(e) {
213			convertLinkOnEvent(e);
214			},
215			{ once: true }
216			);
217			element.addEventListener(
218			"click",
219			function(e) {
220			convertLinkOnFly(e);
221			},
222			{ once: true }
223			);
224			element.addEventListener(
225			"mouseover",
226			function(e) {
227			convertInLinksRot13OnFly(e);
228			},
229			{ once: true }
230			);
231			});
232			}
233
234			/**
235			* Convert action attr encoded in rot 13 to normal action with default attr `data-frot`
236			*
237			* @param {string} attribute
238			*/
239			export function convertFormFromRot13(attribute = "data-frot") {
240			[].forEach.call(document.querySelectorAll("[" + attribute + "]"), function(
241			element
242			) {
243			var action = element.getAttribute(attribute);
244			element.removeAttribute(attribute);
245			element.setAttribute(
246			"action",
247			convertShortchutForLink(rot13ToText(action))
248			);
249			});
250			}
251
252			export function convertShortchutForLink(str) {
253			if (str.charAt(0) == "-") {
254			return str.replace("-", "http://");
255			}
256			if (str.charAt(0) == "_") {
257			return str.replace("_", "https://");
258			}
259			if (str.charAt(0) == "@") {
260			return str.replace("@", "mailto:");
261			}
262			return str;
263			}
264
265			/**
266			* readableEmail(selector) Transform an email encoded with rot13 in a readable mail (and add mailto:)
267			*
268			* @param {string} text
269			*/
270			export function readableEmail(selector) {
271			document.querySelectorAll(selector).forEach(function(item) {
272			var mail = rot13ToText(item.textContent);
273			item.innerHTML = '<a href="mailto:' + mail + '">' + mail + "</a>";
274			if (selector.charAt(0) == ".") {
275			item.classList.remove(selector.substring(1));
276			}
277			});
278			}
279
280			/**
281			* Decode rot13
282			*
283			* @param {string} str
284			*/
285			export function rot13ToText(str) {
286			return str.replace(/[a-zA-Z]/g, function(c) {
287			return String.fromCharCode(
288			(c <= "Z" ? 90 : 122) >= (c = c.charCodeAt(0) + 13) ? c : c - 26
289			);
290			});
291			}
292
293			export function testWebPSupport() {
294			var elem = document.createElement("canvas");
295
296			if (elem.getContext && elem.getContext("2d")) {
297			return elem.toDataURL("image/webp").indexOf("data:image/webp") == 0;
			0 ignored issues – show Best Practice introduced 2020-05-14 15:29 UTC by Report Bug Copy Issue Report Comparing `elem.toDataURL("image/we...exOf("data:image/webp")` to `0` using the `==` operator is not safe. Consider using `===` instead. Loading history...
298			}
299
300			return false;
301			}
302
303			/**
304			* Used in ThemeComponent
305			*/
306			export function convertImageLinkToWebPLink() {
307			var switchToWebP = function() {
308			[].forEach.call(document.querySelectorAll("a[dwl]"), function(element) {
309			var href = responsiveImage(element.getAttribute("dwl"));
310			element.setAttribute("href", href);
311			element.removeAttribute("dwl");
312			});
313			};
314
315			if (testWebPSupport()) switchToWebP();
			0 ignored issues – show Coding Style Best Practice introduced 2020-05-14 15:29 UTC by Report Bug Copy Issue Report Curly braces around statements make for more readable code and help prevent bugs when you add further statements. Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0) b = 42; If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0) console.log("a > 0"); b = 42; In this case the statement `b = 42` will always be executed, while the logging statement will be executed conditionally. if (a > 0) { console.log("a > 0"); b = 42; } ensures that the proper code will be executed conditionally no matter how many statements are added or removed. Loading history...
316			}
317
318			/**
319			* Simple Image Lazy Loader
320			* original from : https://davidwalsh.name/lazyload-image-fade
321			*
322			* @param {string} attribute
323			*
324			* @example
325			* imgLazyLoad()
326			* <span data-img=/img/me.png>Tagada</span> or <img data-img=/img/me.png alt=Tagada>
327			*
328			* will be converted to
329			*
330			* <img src=/img/me.png alt=Tagada />
331			*
332			* still used in piedvert. To remove ?!
333			*/
334			export function imgLazyLoad(attribute = "data-img") {
335			[].forEach.call(document.querySelectorAll("[" + attribute + "]"), function(
336			img
337			) {
338			var newDomImg = document.createElement("img");
339			var src = img.getAttribute(attribute);
340			img.removeAttribute(attribute);
341			for (var i = 0, n = img.attributes.length; i < n; i++) {
342			newDomImg.setAttribute(
343			img.attributes[i].nodeName,
344			img.attributes[i].nodeValue
345			);
346			}
347			if (newDomImg.getAttribute("alt") === null && img.textContent != "") {
348			newDomImg.setAttribute("alt", img.textContent);
349			}
350			newDomImg.setAttribute(
351			"src",
352			typeof responsiveImage === "function" ? responsiveImage(src) : src
353			);
354			img.outerHTML = newDomImg.outerHTML;
355			});
356			}
357

PiedWeb / piedweb-cms-js-helpers

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helpers.js ➔ imgLazyLoad A

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