Obtaining elements in JavaScript is only the first step. How to change the properties of elements is the next step. The following important steps, this article mainly describes how to change the content of the DOM element in JS.
HTML form content:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div class="box">
<p></p>
</div>
</body>
</html>1.textContent:
<script>
const box=document.querySelector(".box");
console.log(box);
const p=document.querySelector('p');
console.log(p);
//textContent:添加文本
p.textContent ="hello world";
</script>2.innerText：
<script>
const box=document.querySelector(".box");
console.log(box);
const p=document.querySelector('p');
console.log(p);
p.innerText ="php.cn";
</script>3.innerHTML：
<script>
const box=document.querySelector(".box");
console.log(box);
const p=document.querySelector('p');
console.log(p);
//将html字符串渲染出来应该使用innerHTML
p.innerHTML='<em style="color:red">php.cn</em>';
</script>Recommendation: "2021 js interview questions and answers (large summary)"
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