HexagonCarbon
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HexagonCarbon
这是因为定义的del是可枚举的。可以换种方法定义del,而不用修改for in, ``` Object.defineProperty( Array.prototype,"del",{ set: function (e) {}, get: function () { return function(e) { e.sort(function (e, t) {return e - t;}); var t = this.concat([]); for (var n...