Javascript 如何更改滚动时的边框颜色？_Javascript_Css_Html

Javascript 如何更改滚动时的边框颜色？

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Javascript 如何更改滚动时的边框颜色？,javascript,css,html,Javascript,Css,Html,我正在写一个有文本框的网页。我想在鼠标在文本上滚动时，通过改变边框颜色来突出显示文本，但它一直不起作用  <meta http-equiv="X-UA-Compatible" content="IE=edge,c

我正在写一个有文本框的网页。我想在鼠标在文本上滚动时，通过改变边框颜色来突出显示文本，但它一直不起作用

    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

这是我的html代码

    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

我想在翻滚时将div的边框更改为白色。我一直在尝试使用box:hover的变体，但没有成功。我还使用了一个.box:hover来实现标记，但是div显示得像一个链接

    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

如何在悬停时将此div的边框颜色更改为白色？

使用

：悬停在上。box
是否为我工作：
    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

.box:hover{
    border-color: white
}

您必须注意顺序（以下示例不起作用）：
    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

使用：将悬停在上。box
为我完成了以下工作：
    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

.box:hover{
    border-color: white
}

您必须注意顺序（以下示例不起作用）：
    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

为什么不使用：悬停
css选择器
    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

    div.box {
        ...
        border-color: black; (
    }

    div.box:hover {
        border-color: white;
    }

为什么不使用：悬停css选择器
    <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
    Remove this if you use the .htaccess -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    <title>main</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />

    <meta name="viewport" content="width=device-width; initial-scale=1.0" />

    <!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <title>canvas</title>
    <meta name="description" content="" />
    <meta name="author" content="Zolani" />
    <link rel="stylesheet" type="text/css" href="canvas.css"/>
    <script type="application/javascript" src="canvas.js"></script>
</head>

<body>
    <div class="title">
        Linear Algebra.
    </div>
    <div>
        <div class="box" onmouseover="light()">
            <h1 class="boxtitle"> Matrix </h1>

            <p>
                Here are some matrixes. They're pretty cool, to
                be honest thing!
            </p>
        </div>
        <div class ="box" onmouseover="light()">
            <h1 class="boxtitle"> Subspaces </h1>

            <p>
                Example
            </p>
        </div>
    </div>

</body>

    div.box {
        ...
        border-color: black; (
    }

    div.box:hover {
        border-color: white;
    }

他要的是白色……）他要的是白色……）