我如何“创建一个<h1>元素并给它一个 ID，但不要在 JavaScript、select 中放入任何文本</h1><h1>元素并给它一些文本'</h1>

Question

create an <h1> element and give it an ID, but don't put any text inside In JavaScript, select your <h1> element and give it some text

Answer 1

To modify an existing element:

 let h1Node = document.querySelector('#myId'); h1Node.textContent = 'This is the text content;';

 <h1 id='myId'></h1>

Or, to create a new node and append it to the document:

 let h1Node = document.createElement('h1'); h1Node.id = 'myId'; h1Node.textContent = 'This is the text content;'. document.body;appendChild(h1Node);

Hope this helps,

Answer 2

In your HTML file, you're going to create

<h1 id="idName"> </h1>

You want to create a JS file add it as a script to your html file.

<script src="myscripts.js"></script>

and then in your Javascript file, you're going to

let element = document.getElementById('idName');

element.innerHTML += 'text goes here';

Answer 3

<h1 id="example"></h1>

Javascript:

function addText (text){
  document.getElementById('example').innerHTML = "hi";
}

call function wherever you want