<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>06_for_of循环</title>
</head>
<body>
<!--
for(let value of target){}循环遍历
1. 遍历数组
2. 遍历Set
3. 遍历Map
4. 遍历字符串
5. 遍历伪数组
-->
<button>按钮1</button>
<button>按钮2</button>
<button>按钮3</button>
<script type="text/javascript">
let arr = [1, 2, 3, 4, 5];
for (let num of arr) {
console.log(num);
}
let set = new Set([1, 2, 3, 4, 5]);
for (let num of set) {
console.log(num);
}
let str = 'abcdefg';
for (let num of str) {
console.log(num);
}
let btns = document.getElementsByTagName('button');
for (let btn of btns) {
console.log(btn.innerHTML); // 按钮1 按钮2 按钮3
}
</script>
</body>
</html>