myarray = []; } var OBJ1_array = []; var result_array2 = null; var result; OBJ1_array = createarray1(); for (i = 0; i < 2; i++) { let tempArr = $.extend(true, [], OBJ1_array); result = createarray2(); OBJ1_array = tempArr; } function createarray1() { let ...
With Array.prototype.push.apply, it is a lot more than a simple copy-n-paste over the data. The ".apply" has to check each index in the array and convert it to a set of arguments before passing it to Array.prototype.push. Then, Array.prototype.push has to additionally allocate more ...
string representations of objects in node and the browser 上传者:weixin_42685438时间:2021-10-01 assignplus:一个自定义的类似于Object.assign的函数,可以用符号注释覆盖以实现高级功能 AssignPlus assignPlus是一个assignPlus Object.assign的自定义函数,可以用符号注释覆盖以实现高级功能。 有了它,您不仅可以做Obj...
var shallow = _.clone(objects);console.log(shallow[0] === objects[0]); // trueobjects[0].a = 11console.log(shallow[0]) // { a : 11} DeepCopy深拷贝的实现方式 1. 手动复制 要实现拷贝出来的副本,不受原本影响,那么可以这么实现 var o1 = { a : 1, b : 2 }var o2 = { a : o...
//深拷贝functiondeepclone(obj){functioncopyList(arr){letresult=[]for(letitemofarr){result.push(this.deepclone(item))}returnresult}if(typeofobj==="object"){if(Array.isArray(obj)){returncopyList(obj)}else{letresult={}for(letkeyinobj){result[key]=deepclone(obj[key])}returnresult}}else...
letcopy = _.clone(arrays); console.log(copy); {first: [1,2,3],second: [4,5,6] } 浅拷贝意味着顶层object(或者array、buffer、map等)被复制了,但是对象里的object(深层)只是复制了它引用。见下面代码: const_ =require('lodash'); letarrays = {first: [1,2,3],second: [4,5,6]}; ...
// 深拷贝functiondeepclone(obj){functioncopyList(arr){letresult=[]for(letitemofarr){result.push(this.deepclone(item))}returnresult}if(typeofobj==="object"){if(Array.isArray(obj)){returncopyList(obj)}else{letresult={}for(letkeyinobj){result[key]=deepclone(obj[key])}returnresult}}else...
if (typeof source !== 'object' || source === null) { return source; } if (hash.has(source)) { return hash.get(source); } const target = Array.isArray(source) ? [] : {}; Reflect.ownKeys(source).forEach(key => { const val = source[key]; ...
copy = options[ name ];// Prevent never-ending loop// 防止无限循环if( target === copy ) {continue; }// Recurse if we're merging plain objects or arrays// 如果要合并纯对象或数组,使用递归if( deep && copy && ( jQuery.isPlainObject( copy ) || ( copyIsArray =Array.isArray( copy )...
Like the spread operator, slice() only creates a shallow copy of an array. If the array contains nested arrays or objects, the slice() method will only create a shallow copy of the top-level elements, and the nested elements will be shared between the original array and the copy. Method...