函数仅适用于一个div？

Question

我被困住了……我似乎无法在第一个细分以下的div上触发一个函数。……有什么建议吗？

Answer 1

Perhaps you are using something like this:

document.getElementById("myDiv")

With HTML like this:

<div id="myDiv">Hello World</div>
<div id="myDiv">Hello Again</div>

In which case, you can't use the same ID for two div tags and the divs after your first one won't be affected by your JavaScript.

You can use:

document.getElementsByTagName("div")

To get a collection of all your divs, you could then test them to see if you want to do something with them, for example by giving them all the same class.