语法中的innerHTML 错误不起作用； 未捕获的类型错误：无法设置 null 的属性（设置“innerHTML”）

Question

For some reason I am keep on getting a syntax error from this "innerHTML", can someone help me?

HTML CODE:

JavaScript CODE: document.getElementById("ID").innerHTML = "Test";

Syntax Error: Uncaught TypeError: Cannot set properties of null (setting 'innerHTML')

I am trying to make the div respond with a "Test" using "innerHTML" and "getElementById" but the syntax error is getting in the way.

Answer 1

The error means that js not found with the selector ID. You need ID as a selector. Take a look:

 document.getElementById("ID").innerHTML = "Test";

 <div id="ID">Hello</div>

Answer 2

The error refers to the fact that document.getElementById("ID")´´´ is invalid. Meaning that "ID" is not excisting. In your HTML code there needs to be an object with the document.getElementById("ID")´´´ is invalid. Meaning that "ID" is not excisting. In your HTML code there needs to be an object with the document.getElementById("ID")´´´ is invalid. Meaning that "ID" is not excisting. In your HTML code there needs to be an object with the id="ID"´´´.

Answer 3

在网页上当前不存在的 ID 上运行 getElementById 会出现此错误，如果您正在处理具有多个场景的项目并且您尝试为当前未显示在屏幕上的场景中的元素调用此它会因为这个错误而出错。