筛选器.png

筛选器代码实例：

<!DOCTYPE html>

<head>
    <meta charset="utf-8" />
    <title>10.17 过滤器</title>
    <script src="js/jquery-3.4.1.min.js"></script>
    <link rel="stylesheet" type="text/css" href="lib/css/bootstrap.min.css"/>
</head>
<body>
    <table class="table">
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
        <tr>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
            <td>1</td>
        </tr>
    </table>
    <!--<ul>
        <li>第0个</li>
        <li>第1个</li>
        <li>第2个</li>
        <li>第3个</li>
        <li>第4个</li>
        <li>第5个</li>
        <li>第6个</li>
        <li>第7个</li>
    </ul>-->
    <script>
    $(".table tr:even").css("backgroundColor","pink");

// $("ul li").eq(0).css("color","red");

    //获取第一个

// $("ul li:first").css("color","red");

    //获取最后一个个

// $("ul li:last").css("color","red");
// $("ul li").eq($("ul li").length-1).css("color","red");
// $("ul li").eq(-1).css("color","red");
// $("ul li:eq(-1)").css("color","red");

    //not 除了

// $("ul li:not(li:eq(2))").css("color","red");

    //even 偶数行

// $("ul li:even").css("color","red");

        
    //even 奇数行

// $("ul li:odd").css("color","red");

    //gt 大于

// $("ul li:gt(4)").css("color","red");

    //lt 小于
        $("ul li:lt(3)").css("color","red");
    </script>
</body>


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