javascript
深度拷贝(三种方法):http://blog.csdn.net/flyingpig2016/article/details/52895620
function deepCopy(obj) { return JSON.parse(JSON.stringify(obj)); }
function deepCopy(obj){ var newobj, obj; if (obj.constructor == Object){ newobj = new obj.constructor(); }else{ newobj = new obj.constructor(obj.valueOf());//valueOf()方法返回 Array 对象的原始值 } for(var key in obj){ if ( newobj[key] != obj[key] ){ if ( typeof(obj[key]) == 'object' ){ newobj[key] = deepCopy(obj[key]); }else{ newobj[key] = obj[key]; } } } newobj.toString = obj.toString; newobj.valueOf = obj.valueOf; return newobj; }
var cloneObj = function(obj){ var str, newobj = obj.constructor === Array ? [] : {}; if(typeof obj !== 'object'){ return; } else if(window.JSON){ str = JSON.stringify(obj), //系列化对象 newobj = JSON.parse(str); //还原 } else { for(var i in obj){ newobj[i] = typeof obj[i] === 'object' ? cloneObj(obj[i]) : obj[i]; } } return newobj; };