在getElementById中添加多个id [英] Add multiple ids in getElementById

问题描述

如何将此脚本与多个ID一起使用？对我尝试添加的第二个ID不起作用

How to use this script with multiple ids? Does not work on the second id that I try to add

<script type="text/javascript">
window.onload = (function () {
var elem = document.getElementById("id1","id2").onclick = function()
{
fbq('track', 'InitiateCheckout');
}
});
</script>

推荐答案

您可以使用 querySelectorAll 按ID分类选择多个项目：

You can use querySelectorAll to select many items by their IDs:

var items = document.querySelectorAll('#id2, #id3, #id5');

for (var i = 0; i < items.length; i++)
{
  items[i].onclick = function() { 
    this.innerText = this.innerText + '!';
  };
}

2, 3, 5 are working:

<p id="id1">I am 1</p><p id="id2">I am 2</p><p id="id3">I am 3</p><p id="id4">I am 4</p><p id="id5">I am 5</p>

但是，创建公共类听起来要好得多。

However, creating a common class sounds much better.

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