JS模拟鼠标点击按钮

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原创最新推荐文章于 2026-05-26 08:29:55 发布 2.7k 阅读 AI 写同款· GEO 优化 ›

JS实现轮播图片——JS每日一练1 前言：我之前在学JavaScript的时候，基本上都是看的《JavaScript高级程序设计》，而锻炼JS的例子也基本上是书上的小例子，每章看完了也很容易忘记一些知识点，缺乏实战的锻炼，于是就在网上找一些实例做做并且根据例子做一些拓展实例会比单纯的了解理论知识好多了，于是就有了这个专题文章《JavaScript实例每日一练》，和我一起通过实例深入了解JavaScript的“奥秘”吧，本专题文章不定... 阅读详情

var btn = document.querySelector("#su");
// 先要注册，然后触发，否则不行。
btn.addEventListener("click", function(e) {
console.log("simulate event");
}, false);
var event = document.createEvent("MouseEvents");
event.initMouseEvent('click',true,true,document.defaultView,0,0,0,0,0,false,false,false,false,0,null);
btn.dispatchEvent(event)

//模拟按住Shift的同时又按下A键：

var text = document.getElementsByTagNames("input")[0];
if (document.implementation.hasFeature("KeyboardEvents", 3.0) {
	var event = document.createEvent("KeyboardEvent");
	event.initKeyboardEvent("keydown", true, true, document.defaultView, "a", 0, "Shift", 0);
}

function simulatedClick(target, options) {

  var event = target.ownerDocument.createEvent('MouseEvents'),
      options = options || {},
      opts = { // These are the default values, set up for un-modified left clicks
        type: 'click',
        canBubble: true,
        cancelable: true,
        view: target.ownerDocument.defaultView,
        detail: 1,
        screenX: 0, //The coordinates within the entire page
        screenY: 0,
        clientX: 0, //The coordinates within the viewport
        clientY: 0,
        ctrlKey: false,
        altKey: false,
        shiftKey: false,
        metaKey: false, //I *think* 'meta' is 'Cmd/Apple' on Mac, and 'Windows key' on Win. Not sure, though!
        button: 0, //0 = left, 1 = middle, 2 = right
        relatedTarget: null,
      };

  //Merge the options with the defaults
  for (var key in options) {
    if (options.hasOwnProperty(key)) {
      opts[key] = options[key];
    }
  }

  //Pass in the options
  event.initMouseEvent(
      opts.type,
      opts.canBubble,
      opts.cancelable,
      opts.view,
      opts.detail,
      opts.screenX,
      opts.screenY,
      opts.clientX,
      opts.clientY,
      opts.ctrlKey,
      opts.altKey,
      opts.shiftKey,
      opts.metaKey,
      opts.button,
      opts.relatedTarget  );

  //Fire the event
  target.dispatchEvent(event);}