Javascript 为什么我的Chrome扩展不能点击谷歌文档中的“新评论”按钮？

直到最近，我的Chrome扩展通过一个内容脚本，能够找到并以编程方式单击“新建注释”按钮，该按钮在编辑模式下突出显示Google文档中的文本后出现

以下是突出显示时出现的按钮：

<div id="docs-instant-button-bubble" class="docs-material docs-instant- 
button-bubble-transformation-ltr docs-instant-button-visible" instant- 
role="button" tabindex="-1" aria-hidden="true" aria-label="Add a instant- 
comment" data-tooltip="Add a comment" style="top: 352.8px; opacity: 1; instant- 
background-color: red;"><div class="docs-instant-button-bubble-icon-instant- 
container"><span class="docs-instant-button-bubble-icon docos-icon-img instant- 
docos-icon-img-hdpi docos-instant-icon-img docos-icon-instant-docos-ltr instant- 
docos-instant-button-bubble-icon"></span></div></div>

在谷歌文档中，是什么改变了这个元素，使我的程序点击失败

提前感谢您的指导/帮助

来自：

试试这个代码；它通过在按钮中心快速连续触发mousedown、mouseup和click事件来模拟鼠标左键单击元素：

var simulateMouseEvent = function(element, eventName, coordX, coordY) {
  element.dispatchEvent(new MouseEvent(eventName, {
    view: window,
    bubbles: true,
    cancelable: true,
    clientX: coordX,
    clientY: coordY,
    button: 0
  }));
};

var theButton = document.querySelector('ul form button');

var box = theButton.getBoundingClientRect(),
    coordX = box.left + (box.right - box.left) / 2,
    coordY = box.top + (box.bottom - box.top) / 2;

simulateMouseEvent (theButton, "mousedown", coordX, coordY);
simulateMouseEvent (theButton, "mouseup", coordX, coordY);
simulateMouseEvent (theButton, "click", coordX, coordY);

---

试试yourElement.dispatchEventnew MouseeEvent'click'，{bubbles:true}试试。@wOxxOm，我改为：var bubbleElem=$docs即时按钮bubble；bubbleElem.dispatchEventnew MouseeEvent'click'，{bubbles:true}和Get:Error handling response:TypeError:bubbleElem.dispatchEvent不是function@IvánNokonoko-到目前为止，它工作得很漂亮！！！非常感谢。要将其写为答案吗？bubbleElem不是一个元素，它是一个jQuery包装器，因此需要bubbleElem[0]来访问实际的元素。

var simulateMouseEvent = function(element, eventName, coordX, coordY) {
  element.dispatchEvent(new MouseEvent(eventName, {
    view: window,
    bubbles: true,
    cancelable: true,
    clientX: coordX,
    clientY: coordY,
    button: 0
  }));
};

var theButton = document.querySelector('ul form button');

var box = theButton.getBoundingClientRect(),
    coordX = box.left + (box.right - box.left) / 2,
    coordY = box.top + (box.bottom - box.top) / 2;

simulateMouseEvent (theButton, "mousedown", coordX, coordY);
simulateMouseEvent (theButton, "mouseup", coordX, coordY);
simulateMouseEvent (theButton, "click", coordX, coordY);