HTML page:
<!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></title>
</head>
<body>
</body>
</html>1. Add elements in HTML
<script>
//append()创建一个列表
const ul=document.createElement("ul");
//循环来生成多个列表li
for(let i=1;i<=5;i++){
const li=document.createElement("li");
li.textContent=`item${i}`;
ul.append(li);
}
console.log(ul);
</script>2. Insert inside the tag
li= document.createElement("li");
li.textContent="第一个元素";
ul.insertAdjacentElement("afterbegin",li);
li= document.createElement("li");
li.textContent="最后一个元素";
ul.insertAdjacentElement("beforeend",li);3. Insert Outside the tag
a=document.createElement("a");
a.innerText="《雪中悍刀行》";
a.href="http://www.baidu.com";
ul.insertAdjacentElement("beforebegin",a);
a1=document.createElement("a");
a1.innerText="《剑来》";
a1.href="https://www.php.cn/";
ul.insertAdjacentElement("afterend",a1);Recommended: "2021 js interview questions and answers (large summary)"
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