* @returns {array}*/functionshuffle(array) { let m=array.length, t, i;//While there remain elements to shuffle…while(m) {//Pick a remaining element…i = Math.floor(Math.random() * m--);//And swap it with the current element.t =array[m]; array[m]=array[i]; array[i]=t; ...
Array.from( ) 方法:将类数组对象或可迭代对象转化为数组,比如arguments,js选择器找到dom集合和对象模拟的数组。 代码示例如下 //参数为数组,返回与原数组一样的数组console.log(Array.from([1, 2]));//[1, 2]//参数含空位console.log(Array.from([1, , 3]));//[1, undefined, 3] Array.of( ) ...
AI代码解释 names:functionaddContents(data){varbox=document.getElementById('box'),ul=box.getElementsByTagName('ul')[0],fragment=document.createDocumentFragment(),li;for(vari=0,j=data.length;i<j;i++){li=document.createElement('li');if(data[i].hasOwnProperty('name')){li.appendChild(docume...
Array.from 创建数组arrayLike, [mapFn], thisArg 对一个类似数组或可迭代对象创建一个新的浅拷贝的数组实例。伪数组对象 如DOM,getElements 可以通过此方法应用数组方法; 通过设定包含length的对象生成需要的数组 Array.from(new Set(arr)) 数组去重功能性...
constresult=array.reduce((accumulator,element,index,array)=>{// 返回累积的结果},initialValue); 5:some:检查数组中是否至少有一个元素满足指定的条件,返回一个布尔值。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 consthasSome=array.some((element,index,array)=>{// 返回条件判断结果}); ...
如果不知道也没有关系,今天这篇文章将汇总详细介绍Array中常用的一些方法,一起来学习一下吧! 01、push 功能:向数组末尾添加一个或多个元素,并返回数组的新长度。 //push()arry.push(element1,element2,...,elementN) 参数说明:element1、element2、…...
This includes things like window.Array, window.Promise, etc. It also, notably, includes window.eval, which allows running scripts, but with the jsdom window as the global: const dom = new JSDOM(` document.getElementById("content").append(document.createElement("hr")); `, { runScripts:...
array.includes(searchElement[, fromIndex]) 此方法判断数组中是否存在某个值,如果存在返回 true,否则返回false。 它可以像这样使用: [1, 2, 3].includes(2); // true [1, 2, 3].includes(4); // false 1. 2. 它还接受可选的第二个参数fromIndex: ...
Vue Js Add New Item start of array :To add a new element at the beginning of an array in Vue.js, you can use the unshift() method. This method accepts one or more parameters that represent the new element(s) to be added.When you call the unshift() method, the existing elements ...
Type: Array|Object This option is inherited from the Component base class. disablePictureInPicture Type: boolean If true, switching the video element into picture-in-picture is disabled. Default is false. This has no effect on Firefox's proprietary picture-in-picture mode which does not implemen...