67 lines
2.3 KiB
JavaScript
67 lines
2.3 KiB
JavaScript
// This file adds in full array method support in browsers that don't support it
|
|
// see: http://stackoverflow.com/questions/2790001/fixing-javascript-array-functions-in-internet-explorer-indexof-foreach-etc
|
|
|
|
// Add ECMA262-5 Array methods if not supported natively
|
|
if (!('indexOf' in Array.prototype)) {
|
|
Array.prototype.indexOf= function(find, i /*opt*/) {
|
|
if (i===undefined) i= 0;
|
|
if (i<0) i+= this.length;
|
|
if (i<0) i= 0;
|
|
for (var n= this.length; i<n; i++)
|
|
if (i in this && this[i]===find)
|
|
return i;
|
|
return -1;
|
|
};
|
|
}
|
|
if (!('lastIndexOf' in Array.prototype)) {
|
|
Array.prototype.lastIndexOf= function(find, i /*opt*/) {
|
|
if (i===undefined) i= this.length-1;
|
|
if (i<0) i+= this.length;
|
|
if (i>this.length-1) i= this.length-1;
|
|
for (i++; i-->0;) /* i++ because from-argument is sadly inclusive */
|
|
if (i in this && this[i]===find)
|
|
return i;
|
|
return -1;
|
|
};
|
|
}
|
|
if (!('forEach' in Array.prototype)) {
|
|
Array.prototype.forEach= function(action, that /*opt*/) {
|
|
for (var i= 0, n= this.length; i<n; i++)
|
|
if (i in this)
|
|
action.call(that, this[i], i, this);
|
|
};
|
|
}
|
|
if (!('map' in Array.prototype)) {
|
|
Array.prototype.map= function(mapper, that /*opt*/) {
|
|
var other= new Array(this.length);
|
|
for (var i= 0, n= this.length; i<n; i++)
|
|
if (i in this)
|
|
other[i]= mapper.call(that, this[i], i, this);
|
|
return other;
|
|
};
|
|
}
|
|
if (!('filter' in Array.prototype)) {
|
|
Array.prototype.filter= function(filter, that /*opt*/) {
|
|
var other= [], v;
|
|
for (var i=0, n= this.length; i<n; i++)
|
|
if (i in this && filter.call(that, v= this[i], i, this))
|
|
other.push(v);
|
|
return other;
|
|
};
|
|
}
|
|
if (!('every' in Array.prototype)) {
|
|
Array.prototype.every= function(tester, that /*opt*/) {
|
|
for (var i= 0, n= this.length; i<n; i++)
|
|
if (i in this && !tester.call(that, this[i], i, this))
|
|
return false;
|
|
return true;
|
|
};
|
|
}
|
|
if (!('some' in Array.prototype)) {
|
|
Array.prototype.some= function(tester, that /*opt*/) {
|
|
for (var i= 0, n= this.length; i<n; i++)
|
|
if (i in this && tester.call(that, this[i], i, this))
|
|
return true;
|
|
return false;
|
|
};
|
|
} |