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js實現物件深度拷貝

(1)

var newObject=JSON.parse(JSON.stringify(oldObject))


(2)

function deep_clone(source)
{  
    var newObject={ };
    for(var key in source)
    {
        newObject[key]=(typeof(source[key])==='object')?deep_clone(source[key]):source[key];
     }
    return newObject;
 }