How to use document.getElementById(id) in JavaScript?

The document.getElementById(id) method is used to retrieve the element with the specified id attribute. To use this method, follow the steps below:

1. Set a unique id attribute for the element you want to retrieve in the HTML file, as shown below:

<div id="myElement">这是一个示例元素</div>

1. In a JavaScript file, use the document.getElementById(id) method to retrieve the element as shown below:

var element = document.getElementById("myElement");

1. constituent

element.innerHTML = "这是修改后的内容";
element.style.color = "red";

By following the above steps, you can use the document.getElementById(id) method to retrieve and manipulate the specified element with the given id.