functiondebounce(func, delay) {letid;// ✅ ...rest 保证在不使用 arguments 的情况下,也可以传入不定数量的参数returnfunction(...args) {console.log(`\nrest args =`, args);console.log(`rest ...args =`, ...args);console.log(`rest [...args] =`, [...args]);letargs1 =arguments;...
function f (a, b){ return a(b); } f(a, 'leo'); // "hi leo" 1. 2. 3. 4. 5. 6. 7. 这段代码的意思:定义方法f,接收两个参数,方法a和变量b,在方法a中返回一段字符串,当执行方法f并传入参数方法a和参数b的时候,返回"hi leo"。 也可以直接调用JS内置方法: let a = 3, b = -2;...
function update() { var nian = document.getElementsByClassName("nian")[0]; var yue = document.getElementsByClassName("yue")[0]; setInterval(function() { var str1 = show1(); nian.innerHTML = str1; var str2 = show2(); yue.innerHTML = str2 }, 1000) } setTimeout(update(), 0);...
setTimeout(function|code,delay[,arguments]); function|code:要执行的函数或字符串形式的代码。 delay:延迟执行的时间,单位为毫秒。 arguments:传递给函数的参数(可选)。 setInterval setInterval则用于按照指定的时间间隔(以毫秒为单位)重复执行函数或代码块。其基本语法与setTimeout相似: 代码语言:javascript 复制 ...
function () { console.log(this.name); } test2.showname();对象时test2,所以this也指向test2 name自然也是test2.name windseek2 上面的代码也相当于这样写: 代码语言:javascript 复制 vartest1={name:'windseek1',showname:function(){console.log(this.name);}}vartest2={name:'windseek2',showname:fun...
// Timer constructor function. // The entire prototype is defined in lib/timers.js constructor(callback, after, args, isRepeat, isRefed) { this._idleTimeout = after; this._idlePrev = this; this._idleNext = this; this._idleStart = null; ...
setTimeout是在系统启动的时候挂载的全局函数。代码在timer.js。 functionsetupGlobalTimeouts(){consttimers=NativeModule.require('timers');global.clearImmediate=timers.clearImmediate;global.clearInterval=timers.clearInterval;global.clearTimeout=timers.clearTimeout;global.setImmediate=timers.setImmediate;global.set...
window.onload=function(){get('makeinput').onmousedown=function(){varinput=document.createElement('input'); input.setAttribute('type','text'); input.setAttribute('value','test1'); get('inpwrapper').appendChild(input); input.focus();
');})setTimeout(function(){input.focus();input.select();},0)}效果预览：settimeout trigger ...
Thetimeoutfunction takes an optionaloptionsobject that may contain any of the following keys: respond Controls if this module will "respond" in the form of forwarding an error. Iftrue, the timeout error is passed tonext()so that you may customize the response behavior. This error has a.tim...