rochars / byte-data

// ES5 15.4.4.19 Array.prototype.map ( callbackfn [ , thisArg ] )

// From https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/Map

if (!Array.prototype.map) {

  Array.prototype.map = function (fun /*, thisp */) {

    if (this === void 0 || this === null) { throw TypeError(); }

    var t = Object(this);

    var len = t.length >>> 0;

    if (typeof fun !== "function") { throw TypeError(); }

    var res = []; res.length = len;

    var thisp = arguments[1], i;

    for (i = 0; i < len; i++) {

      if (i in t) {

        res[i] = fun.call(thisp, t[i], i, t);

      }

    }

    return res;

  };

}

// ES5 15.4.4.20 Array.prototype.filter ( callbackfn [ , thisArg ] )

// From https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/Filter

// ES5 15.4.4.17 Array.prototype.some ( callbackfn [ , thisArg ] )

// From https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some

if (!Array.prototype.some) {

  Array.prototype.some = function (fun /*, thisp */) {

    if (this === void 0 || this === null) { throw TypeError(); }

    var t = Object(this);

    var len = t.length >>> 0;

    if (typeof fun !== "function") { throw TypeError(); }

    var thisp = arguments[1], i;

    for (i = 0; i < len; i++) {

      if (i in t && fun.call(thisp, t[i], i, t)) {

        return true;

      }

    }

    return false;

  };

}

// ES5 15.4.4.18 Array.prototype.forEach ( callbackfn [ , thisArg ] )

// From https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/forEach