js 实现Object的clone方法(深度克隆) functiondeepClone(origin, target){vartarget = target ||{}, toStr=Object.prototype.toString, arrStr= "[object Array]";for(varpropinorigin){if(origin.hasOwnProperty(prop)){if(origin[prop] !== "null" &&typeof(origin[prop]) == "object"{ target[prop]=...
Object {banana: Object} 解决办法clone,生成一个新的对象,而不是对原对象的引用。 代码如下: 1<script>2functionclone(obj) {3varo;4if(typeofobj == "object") {5if(obj ===null) {6o =null;7}else{8if(objinstanceofArray) {9o =[];10for(vari = 0, len = obj.length; i < len; i+...
无限嵌套的对象和数组循环引用各种 JavaScript 类型，例如： Date、Set、Map、Error、RegExp、ArrayBuffer、Blob、File、ImageData 等转移任何可转移对象 1.可转移的对象（Transferable object）是拥有属于自己资源的对象，这些资源可以从一个上下文转移到另一个，确保资源一次仅在一个上下文可用。传输后，原始对象不再可用...
jsobject对象赋值bug和对象复制clone⽅法 最近在写程序的时候发现，如果新建⼀个object对象objb，初始化值为obja，如果改变了objb对象的字段值，那么obja也会随之改变，看来对象赋值传递的是⼀个引⽤。代码重现：1 <script> 2var obja = { 3 'apple':{'key':'apple','name':'苹果'},4 'ban...
16 for (var k in Obj) { 17 buf[k] = clone(Obj[k]); 18 console.log(`Object buf[k] = ${buf[k]}`); 19 } 20 console.log(`Object = ${buf}`); 21 return buf; 22 }else { 23 console.log(`Other = ${Obj}`); 24 return Obj; ...
functiondeepClone(obj){if(obj===null||typeofobj!=='object'){returnobj;}letclone=obj.constructor();for(letattrinobj){if(obj.hasOwnProperty(attr)){clone[attr]=this.deepClone(obj[attr]);}}returnclone;} 1. 2. 3. 4. 5. 6.
filter(key => object.propertyIsEnumerable(key)), ...Object.keys(object) ] } // 获取原型链上的key function keysIn(object) { const res = []; for (const key in object) { // 拷贝所有的属性(除了最大的原型对象) if (key !== 'constructor' || (!isPrototype(object) && object.hasOwn...
font-src cdnjs.cloudflare.com fonts.gstatic.com fonts.googleapis.com; style-src 'self' 'unsafe-inline' fonts.googleapis.com cdnjs.cloudflare.com static.scoold.com accounts.google.com; img-src 'self' https: data:; object-src 'none; report-uri /reports/cspv; script-src 'unsafe-inline' htt...
object-assign "^4.0.1" pinkie-promise "^2.0.0" git-clone@^0.1.0: version "0.1.0" resolved "http://r.cnpmjs.org/git-clone/download/git-clone-0.1.0.tgz#0d76163778093aef7f1c30238f2a9ef3f07a2eb9" integrity sha1-DXYWN3gJOu9/HDAjjyqe8/B6Lrk= glob@^7.1.3: version "7.1...
首先我们要实现一个getType函数对元素进行类型判断,直接调用Object.prototype.toString 方法。 functiongetType(obj){letmap={"[object Boolean]":"boolean","[object Number]":"number","[object String]":"string","[object Function]":"function","[object Array]":"array","[object Date]":"date","[obje...