zhang6464
/ Array.prototype.map.js
Created
October 11, 2014 11:12
javascript Array.prototype.map implement.
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| !function(){ | |
| if( typeof Array.prototype.map == 'function') | |
| return; | |
| Array.prototype.map = function(callback){ | |
| var i = 0, | |
| length = this.length, | |
| res = []; | |
| if( callback && typeof callback == 'function' ){ | |
| for(;i<length;i++) |