What is the most efficient way to clone a JavaScript object? I've seen obj = eval(uneval(o));
being used, but that's non-standard and only supported by Firefox.
I've done things like obj = JSON.parse(JSON.stringify(o));
but question the efficiency.
I've also seen recursive copying functions with various flaws.
I'm surprised no canonical solution exists.
转载于:https://stackoverflow.com/questions/122102/what-is-the-most-efficient-way-to-deep-clone-an-object-in-javascript