js学习--制作选项卡

选项卡制作

<!DOCTYPE html>
<html lang="zh">
	<head>
		<meta charset="UTF-8">
		<meta name="viewport" content="width=device-width, initial-scale=1.0">
		<style>
			.text_one {
				width: 11.4%;
				height: 200px;
			}
		</style>
	</head>
	<body>
		<div style="display: flex;justify-content: center;">
			<div class="option_one" style="background-color: red;">选项卡1</div>
			<div class="option_one" style="background-color: aqua;">选项卡2</div>
			<div class="option_one" style="background-color: aqua;">选项卡3</div>
		</div>
		<div style="display: flex;justify-content: center;">
			<div class="text_one" style="background-color: beige;">内容1</div>
			<div class="text_one" style="background-color: yellow;display: none;">内容2</div>
			<div class="text_one" style="background-color: skyblue;display: none;">内容3</div>
		</div>
		<script>
			let a = document.getElementsByClassName('option_one');
			let t = document.getElementsByClassName('text_one');
			console.log(a);
			console.log(t);
			for (let i = 0; i < a.length; i++) {
				a[i].addEventListener('click', function() {
					console.log(i);
					for (let j = 0; j < t.length; j++) {
						if(i==j){
							a[j].style.background = 'red';
							t[j].style.display = 'block';

						} else {
							a[j].style.background = 'aqua';
							t[j].style.display = 'none';
						}
					}
				})
			}
		</script>
	</body>
</html>