Question

我需要在我的网页上拦截对囚室内容的任何改动。

下面的法典显示,增加生计的人不工作。

function modifyText() {
alert("!");
}

var el=document.getElementById("mycell");
el.innerHTML="a"
el.addEventListener("change", modifyText, false); 
// After next instruction I expect an alert message but it does not appear...
el.innerHTML="Z";

The code is just a toy example. In my real case the changes in the page (and therefore in the cell, too) are made by a webapp that I have NO control over.

Answer 1

You can t listen to a DOM element change that way. change event is mostly for inputs

还有其他一些新的3号OMOMS事件,将有助于你实现这一点。

这里有一些:

/ 草案

Answer 2

现代途径是赶上内部变化:

Example:

// identify an element to observe
elementToObserve = window.document.getElementById( y-range ).children[0];

// create a new instance of  MutationObserver  named  observer , 
// passing it a callback function
observer = new MutationObserver(function(mutationsList, observer) {
    console.log(mutationsList);
});

// call  observe  on that MutationObserver instance, 
// passing it the element to observe, and the options object
observer.observe(elementToObserve, {characterData: false, childList: true, attributes: false});

儿童静态电离层变化清单。

Answer 3

参看。探测/监测OM变化的最有效方法? 帮助?

似乎有100%的交叉浏览器解决方案,而工作的一个方面是污染感兴趣的因素,看看它们是否是静默的。时间变化

友情链接