machinecat520
/
zj-Exercise


			
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							<!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>简单过滤选择器</title>
</head>

<body>
    <ul>
        <li>li01</li>
        <li>li02</li>
        <li class="li3">li03</li>
        <li>li04</li>
        <li>li05</li>
    </ul>
    <h1>h1</h1>
    <h3>h3</h3>
    <h6>h6</h6>
</body>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script>
    $(':header').css('color', 'blue')
</script>

<!-- :lt(index)	小于第n个后的元素 -->
<!-- <script>
    $('ul>li:lt(2)').css('color', 'blue')
</script> -->

<!-- :gt(index)	大于第n个后的元素 -->
<!-- <script>
    $('ul>li:gt(2)').css('color', 'blue')
</script> -->

<!-- :eq(index)	第n个元素 -->
<!-- <script>
    $('ul>li:eq(2)').css('color', 'blue')
    $('ul>li').eq(3).css('color', 'red')
</script> -->

<!-- :odd	奇数 -->
<!-- <script>
    $('ul>li:odd').css('color', 'blue')
    // $('ul>li:odd').mouseover(function () {
    //     $(this).css('color', 'blue')
    // })
</script> -->

<!-- :even	偶数 -->
<!-- <script>
    $('ul>li:even').css('color', 'blue')
    // $('ul>li:even').mouseover(function () {
    //     $(this).css('color', 'blue')
    // })
</script> -->

<!-- :not(selector)		除selector之外的元素 -->
<!-- <script>
    $('ul li:not(.li3)').css('color','blue')
</script> -->

<!-- :last或last()		最后一个元素 -->
<!-- <script>
    $('ul li:last').css('color','blue')
</script> -->

<!-- :first或first()	第一个元素 -->
<!-- <script>
    $('ul li').first().css('color','red')
</script> -->

<!-- <script>
    $('ul li:first').css('color','red')
</script> -->


</html>