Created
November 2, 2021 19:31
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| var object_create = Object.create; | |
| if (typeof object_create !== 'function') { | |
| object_create = function(o) { | |
| function F() {} | |
| F.prototype = o; | |
| return new F(); | |
| }; | |
| } | |
| function deepClone(src) { | |
| if(src === null || typeof(src) !== 'object'){ | |
| return src; | |
| } | |
| //Honor native/custom clone methods | |
| if(typeof src.clone == 'function'){ | |
| return src.clone(true); | |
| } | |
| //Special cases: | |
| //Date | |
| if(src instanceof Date){ | |
| return new Date(src.getTime()); | |
| } | |
| //RegExp | |
| if(src instanceof RegExp){ | |
| return new RegExp(src); | |
| } | |
| //DOM Element | |
| if(src.nodeType && typeof src.cloneNode == 'function'){ | |
| return src.cloneNode(true); | |
| } | |
| //Array | |
| if (Object.prototype.toString.call(src) == '[object Array]') { | |
| //[].slice() by itself would soft clone | |
| var ret = src.slice(); | |
| var i = ret.length; | |
| while (i--) { | |
| ret[i] = deepCopy(ret[i]); | |
| } | |
| return ret; | |
| } | |
| //If we've reached here, we have a regular object | |
| var proto = (Object.getPrototypeOf ? Object.getPrototypeOf(src): src.__proto__); | |
| var dest = object_create(proto); | |
| for (var key in src) { | |
| //Note: this does NOT preserve ES5 property attributes like 'writable', 'enumerable', etc. | |
| dest[key] = deepCopy(src[key]); | |
| } | |
| return dest; | |
| } |
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