jQuery.extend() deep clone nested objects

2018-06-04 08:13:24

I am trying to clone a quite complicated object with nested sub objects.

The object has a structure like this:

Board has n elements of BoardElement

BoardElement has n Elements of BoardElementUnits

http://pastebin.com/2NgQQXUC

using jQuery.extend():

var board = $.extend(true, {}, this.game.board)

doesn't clone the nested objects, so I have used JSON to be sure there are no leftover references to the source object.

var boardJSON = JSON.stringify(JSON.decycle(this.game.board));
var board =  JSON.retrocycle($.parseJSON(boardJSON));

This works very well, but the performance is miserable.

最后找到了答案：JQuery目前不支持深度克隆用户定义的对象，但该库确实：owl

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