爬虫之了解---网站／网页前端技术概述

来源：互联网发布：数据透视表里求和项编辑：程序博客网时间：2024/06/07 14:18

爬虫必须了解的web前端技术

html,css,javascript

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<!DOCTYPE html><html lang="zh"><head>    <meta charset="UTF-8">    <title>python crawler</title>    <link rel="stylesheet" href="css/sytl.css">    <style>        .message{            color:#0f0;        }    </style>    <script>        function hello(){            alert('hello');            // window.location.href='http://google.com';        }    </script></head><body onload='hello()'><h1 class='msg-1'>python 爬虫</h1><h2 style='color:green;'>二级标题</h2><p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Dicta quidem, sit excepturi esse nemo <strong>强调<span>内容</span></strong>doloremque tempore eveniet aliquid deleniti voluptatum tenetur error, similique iste perferendis quia adipisci! Possimus, illo nobis.</p><p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eos dolore veritatis magni necessitatibus voluptates eaque saepe ipsum inventore explicabo, ipsa aut vitae nesciunt quasi ipsam architecto, optio totam voluptas cum.</p><b class='message'>加粗文字</b><i>斜体字</i><a href="http://www.baidu.com" target='_blank'>百度课堂</a><img src="image/shark.jpeg" alt=""><img src="" alt=""><div></div><span></span><ul>    <li>1aa</li>    <li>1aa</li>    <li>1aa</li></ul><table border='1'>    <tr>        <td>5&gt;3</td>        <td>3&lt;2</td>        <td>43</td>    </tr>    <tr>        <td>1&amp;</td>        <td>1&copy;</td>        <td>1&nbsp;bb</td>    </tr>    <tr>        <td>2</td>        <td>2</td>        <td>2</td>    </tr>    <tr>        <td>3</td>        <td>3</td>        <td>3</td>    </tr></table></body></html>

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