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  • js(1)代码编写

     1 <!DOCTYPE html>
     2 <html lang="en">
     3 
     4 <head>
     5     <meta charset="UTF-8">
     6     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     7     <meta http-equiv="X-UA-Compatible" content="ie=edge">
     8     <title>Document</title>
     9     <link rel="stylesheet" href="./style.css">
    10     <!-- <style>
    11         div {
    12             color: red
    13         }
    14     </style> -->
    15 </head>
    16 
    17 <body>
    18     <h1>我是标题</h1>
    19     <div>我是div1</div>
    20     <div>我是div2</div>
    21 
    22     <!-- 001-方案一,在script标签中间编写JavaScript代码 -->
    23     <!-- <script type="text/javascript"> -->
    24     <!-- <script>
    25         //当点击div的标签的时候,设置标签的文字为蓝色
    26         // 001-先通过JavaScript代码来获取标签
    27         // document.getElementsByTagName("div");  获取页面中所有的div标签
    28         var oDiv = document.getElementsByTagName("div")[0];
    29 
    30         // 002-给标签添加点击事件
    31         oDiv.onclick = function() {
    32             oDiv.style.color = "blue";
    33         }
    34     </script> -->
    35 
    36     <!-- 002-方案2,把JavaScript代码编写到单独的文件中,引入执行文件 -->
    37     <script src="./index.js"></script>
    38 </body>
    39 
    40 </html>
    <!DOCTYPE html>
    <html lang="en">

    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Document</title>
        <link rel="stylesheet" href="./style.css">
        <!-- <style>
            div {
                color: red
            }
        </style> -->
    </head>

    <body>
        <h1>我是标题</h1>
        <div>我是div1</div>
        <div>我是div2</div>

        <!-- 001-方案一,在script标签中间编写JavaScript代码 -->
        <!-- <script type="text/javascript"> -->
        <!-- <script>
            //当点击div的标签的时候,设置标签的文字为蓝色
            // 001-先通过JavaScript代码来获取标签
            // document.getElementsByTagName("div");  获取页面中所有的div标签
            var oDiv = document.getElementsByTagName("div")[0];

            // 002-给标签添加点击事件
            oDiv.onclick = function() {
                oDiv.style.color = "blue";
            }
        </script> -->

        <!-- 002-方案2,把JavaScript代码编写到单独的文件中,引入执行文件 -->
        <script src="./index.js"></script>
    </body>

    </html>
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  • 原文地址:https://www.cnblogs.com/Frank000000/p/13930056.html
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