console 命令行工具 X clear

console

$(function() {
    $('#bar').click(function() {
        var left = $('.left');
        var right = $('.right');
        var bar = $('#bar');
        if (left.is(':hidden')) {
            left.show();
            right.css('width', '80%');
            bar.html('隐藏');
        } else {
            left.hide();
            right.css('width', '100%');
            bar.html('显示');
        }
    });
});

<!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>两列伸缩栏</title>
    <link rel="stylesheet" type="text/css" href="css/NaVi.css">
    <script src="js/Navi.js"></script>
</head>

<body>
    <div class="outter">
        <div class="left">
            <ol>
                <li>菜单1</li>
                <li>菜单2</li>
                <li>菜单3</li>
                <li>菜单4</li>
                <li>菜单5</li>
            </ol>
        </div>
        <div class="right">
            <div id="bar">隐藏</div>
        </div>
    </div>
</body>

</html>

* {
    margin: 0;
    padding: 0;
}

.outter {
    width: 800px;
    border: 2px solid red;
    overflow: hidden;
    margin: 0 auto;
}

.left {
    width: 20%;
    height: 500px;
    float: left;
    background-color: lightblue;
}

.right {
    width: 80%;
    height: 500px;
    float: left;
    background-color: lightyellow;
}

#bar {
    width: 30px;
    height: 50px;
    padding-left: 5px;
    background-color: lightpink;
    border-bottom-right-radius: 15px;
}

本项目引用的自定义外部资源

jquery.js