{"id":413,"date":"2024-12-21T14:13:49","date_gmt":"2024-12-21T06:13:49","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=413"},"modified":"2024-12-21T14:13:49","modified_gmt":"2024-12-21T06:13:49","slug":"%e5%a6%82%e4%bd%95%e6%9c%89%e6%95%88%e4%bd%bf%e7%94%a8-html-%e7%89%b9%e6%ae%8a%e5%ad%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2024\/12\/21\/%e5%a6%82%e4%bd%95%e6%9c%89%e6%95%88%e4%bd%bf%e7%94%a8-html-%e7%89%b9%e6%ae%8a%e5%ad%97%e7%ac%a6\/","title":{"rendered":"\u5982\u4f55\u6709\u6548\u4f7f\u7528 HTML \u7279\u6b8a\u5b57\u7b26"},"content":{"rendered":"\n
\n

\u6709\u6548\u4f7f\u7528 HTML \u7279\u6b8a\u5b57\u7b26\u662f\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u5e38\u89c1\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u6d89\u53ca\u663e\u793a\u7279\u6b8a\u7b26\u53f7\u3001\u907f\u514d HTML \u89e3\u6790\u9519\u8bef\u4ee5\u53ca\u6b63\u786e\u5448\u73b0\u7528\u6237\u8f93\u5165\u65f6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u6280\u5de7\u548c\u6700\u4f73\u5b9e\u8df5\uff0c\u5e2e\u52a9\u4f60\u66f4\u6709\u6548\u5730\u4f7f\u7528 HTML \u7279\u6b8a\u5b57\u7b26\uff1a<\/p>\n<\/blockquote>\n\n\n\n

1. \u9632\u6b62 HTML \u89e3\u6790\u9519\u8bef<\/strong><\/h3>\n\n\n\n

\u67d0\u4e9b\u5b57\u7b26\u5728 HTML \u4e2d\u5177\u6709\u7279\u6b8a\u542b\u4e49\uff0c\u4f7f\u7528\u8fd9\u4e9b\u5b57\u7b26\u65f6\uff0c\u5982\u679c\u4e0d\u52a0\u4ee5\u5904\u7406\uff0c\u4f1a\u5bfc\u81f4 HTML \u89e3\u6790\u9519\u8bef\u3002\u4f8b\u5982\uff0c<<\/code> \u548c ><\/code> \u88ab\u89e3\u6790\u4e3a\u6807\u7b7e\u7684\u5f00\u59cb\u548c\u7ed3\u675f\uff0c&<\/code> \u88ab\u89e3\u6790\u4e3a\u5b57\u7b26\u5b9e\u4f53\u7684\u8d77\u59cb\u7b26\u53f7\u3002\u4e3a\u4e86\u9632\u6b62\u8fd9\u79cd\u60c5\u51b5\uff0c\u5fc5\u987b\u5c06\u8fd9\u4e9b\u7279\u6b8a\u5b57\u7b26\u8f6c\u6362\u4e3a\u5176\u5bf9\u5e94\u7684\u5b57\u7b26\u5b9e\u4f53\u3002<\/p>\n\n\n\n

\u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n

    \n
  • \u9519\u8bef\u4f7f\u7528<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
      <div>This is a <b>bold<\/b> text<\/div><\/code><\/pre>\n\n\n\n
    \u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u5982\u679c\u4f60\u60f3\u5728 div<\/code> \u5185\u663e\u793a\u6587\u672c <b>bold<\/b><\/code>\uff0c\u5e94\u8be5\u4f7f\u7528\u5b57\u7b26\u5b9e\u4f53\u6765\u907f\u514d HTML \u6807\u7b7e\u88ab\u89e3\u6790\u3002<\/p>\n\n\n\n
      \n
    • \u6b63\u786e\u4f7f\u7528<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
        <div>This is a &lt;b&gt;bold&lt;\/b&gt; text<\/div><\/code><\/pre>\n\n\n\n
      \u8fd9\u6837\uff0c<b><\/code> \u6807\u7b7e\u4f1a\u88ab\u4f5c\u4e3a\u6587\u672c\u800c\u975e HTML \u6807\u7b7e\u663e\u793a\u3002<\/p>\n\n\n\n
      \n\n\n\n
      2. \u663e\u793a HTML \u7279\u6b8a\u5b57\u7b26<\/strong><\/h3>\n\n\n\n
      \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f60\u5e0c\u671b\u5728\u9875\u9762\u4e2d\u663e\u793a HTML \u7279\u6b8a\u5b57\u7b26\uff08\u5982 <<\/code>, ><\/code>, &<\/code> \u7b49\uff09\uff0c\u800c\u4e0d\u88ab\u6d4f\u89c8\u5668\u89e3\u6790\u4e3a HTML \u5143\u7d20\u3002\u6b64\u65f6\uff0c\u4f7f\u7528\u5b57\u7b26\u5b9e\u4f53\u975e\u5e38\u91cd\u8981\u3002<\/p>\n\n\n\n
      \u5e38\u89c1\u5b57\u7b26\u53ca\u5176\u5b9e\u4f53<\/strong>\uff1a<\/p>\n\n\n\n
      \u5b57\u7b26<\/th>\u5b9e\u4f53\u540d\u79f0<\/th>\u5b9e\u4f53\u4ee3\u7801<\/th>\u8bf4\u660e<\/th><\/tr><\/thead>
      <<\/code><\/td>&lt;<\/code><\/td>&#60;<\/code><\/td>\u5c0f\u4e8e\u53f7\uff08less than\uff09<\/td><\/tr>
      ><\/code><\/td>&gt;<\/code><\/td>&#62;<\/code><\/td>\u5927\u4e8e\u53f7\uff08greater than\uff09<\/td><\/tr>
      &<\/code><\/td>&amp;<\/code><\/td>&#38;<\/code><\/td>\u4e0e\u53f7\uff08ampersand\uff09<\/td><\/tr>
      \"<\/code><\/td>&quot;<\/code><\/td>&#34;<\/code><\/td>\u53cc\u5f15\u53f7\uff08double quote\uff09<\/td><\/tr>
      '<\/code><\/td>&apos;<\/code><\/td>&#39;<\/code><\/td>\u5355\u5f15\u53f7\uff08apostrophe\uff09<\/td><\/tr>
      <\/td>&nbsp;<\/code><\/td>&#160;<\/code><\/td>\u4e0d\u95f4\u65ad\u7a7a\u683c\uff08non-breaking space\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      \u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n
      <p>Tom &amp; Jerry<\/p>\n<p>5 &lt; 10<\/p><\/code><\/pre>\n\n\n\n
      \u4e0a\u9762\u7684\u4ee3\u7801\u5c06\u663e\u793a\uff1a<\/p>\n\n\n\n
        \n
      • Tom & Jerry<\/code>\uff08&<\/code> \u7b26\u53f7\u88ab\u6b63\u786e\u8f6c\u4e49\uff09<\/li>\n\n\n\n
      • 5 < 10<\/code>\uff08<<\/code> \u7b26\u53f7\u88ab\u8f6c\u4e49\u4e3a &lt;<\/code>\uff09<\/li>\n<\/ul>\n\n\n\n
        \n\n\n\n
        3. \u907f\u514d XSS \u653b\u51fb<\/strong><\/h3>\n\n\n\n
        XSS\uff08\u8de8\u7ad9\u811a\u672c\u653b\u51fb\uff09\u662f\u9ed1\u5ba2\u6ce8\u5165\u6076\u610f\u811a\u672c\u7684\u5e38\u89c1\u653b\u51fb\u65b9\u5f0f\u4e4b\u4e00\u3002\u4e3a\u4e86\u9632\u6b62\u7528\u6237\u8f93\u5165\u7684\u7279\u6b8a\u5b57\u7b26\u88ab\u6d4f\u89c8\u5668\u89e3\u6790\u5e76\u6267\u884c\u6076\u610f\u811a\u672c\uff0c\u5fc5\u987b\u6b63\u786e\u5730\u8f6c\u4e49\u6240\u6709\u7528\u6237\u8f93\u5165\u3002<\/p>\n\n\n\n
        \u4f8b\u5982\uff0c\u5982\u679c\u7528\u6237\u5728\u8868\u5355\u4e2d\u8f93\u5165 <script>alert('XSS');<\/script><\/code>\uff0c\u800c\u6ca1\u6709\u8f6c\u4e49\u8fd9\u4e9b\u5b57\u7b26\uff0c\u6d4f\u89c8\u5668\u4f1a\u76f4\u63a5\u6267\u884c\u8fd9\u4e9b\u811a\u672c\uff0c\u9020\u6210\u5b89\u5168\u6f0f\u6d1e\u3002<\/p>\n\n\n\n
        \u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n\n\n\n
          \n
        • \u4f7f\u7528\u5b57\u7b26\u5b9e\u4f53\u6765\u8f6c\u4e49\u7528\u6237\u8f93\u5165\u7684\u7279\u6b8a\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u5c06 <<\/code> \u8f6c\u4e49\u4e3a &lt;<\/code>\uff0c><\/code> \u8f6c\u4e49\u4e3a &gt;<\/code>\uff0c&<\/code> \u8f6c\u4e49\u4e3a &amp;<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n
          \u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n
          <p>User input: &lt;script&gt;alert('XSS');&lt;\/script&gt;<\/p><\/code><\/pre>\n\n\n\n
          \u8fd9\u6837\uff0c\u5373\u4f7f\u7528\u6237\u8f93\u5165\u4e86 <script>alert('XSS');<\/script><\/code>\uff0c\u5b83\u5c06\u88ab\u663e\u793a\u4e3a\u666e\u901a\u6587\u672c\uff0c\u800c\u4e0d\u4f1a\u88ab\u6267\u884c\u3002<\/p>\n\n\n\n
          \n\n\n\n
          4. \u591a\u8bed\u8a00\u548c\u5b57\u7b26\u96c6\u652f\u6301<\/strong><\/h3>\n\n\n\n
          \u5728\u591a\u8bed\u8a00\u73af\u5883\u4e2d\uff0cHTML \u9875\u9762\u53ef\u80fd\u9700\u8981\u663e\u793a\u4e0d\u540c\u8bed\u8a00\u7684\u5b57\u7b26\uff0c\u5305\u62ec\u4e00\u4e9b\u975e\u62c9\u4e01\u5b57\u7b26\uff08\u5982\u4e2d\u6587\u3001\u65e5\u6587\u3001\u963f\u62c9\u4f2f\u6587\u7b49\uff09\u3002\u67d0\u4e9b\u7279\u6b8a\u5b57\u7b26\uff08\u5982\u4e2d\u6587\u6807\u70b9\u3001\u7b26\u53f7\uff09\u4e5f\u53ef\u80fd\u662f HTML \u7684\u4fdd\u7559\u5b57\u7b26\u3002<\/p>\n\n\n\n
          \u4e3a\u4e86\u786e\u4fdd\u7f51\u9875\u6b63\u786e\u663e\u793a\u6240\u6709\u5b57\u7b26\uff0c\u6700\u597d\u6307\u5b9a\u7f51\u9875\u7684\u5b57\u7b26\u96c6\u7f16\u7801\u4e3a UTF-8<\/strong>\uff0c\u5b83\u652f\u6301\u4e16\u754c\u4e0a\u51e0\u4e4e\u6240\u6709\u8bed\u8a00\u7684\u5b57\u7b26\u3002<\/p>\n\n\n\n
          \u5728 HTML \u4e2d\u6307\u5b9a\u5b57\u7b26\u96c6\u7f16\u7801<\/strong>\uff1a<\/p>\n\n\n\n
          <meta charset=\"UTF-8\"><\/code><\/pre>\n\n\n\n
          \u4f7f\u7528 UTF-8 \u7f16\u7801\uff0c\u53ef\u4ee5\u786e\u4fdd\u6240\u6709\u8bed\u8a00\u7684\u7279\u6b8a\u5b57\u7b26\u90fd\u80fd\u6b63\u786e\u663e\u793a\uff0c\u800c\u4e0d\u9700\u8981\u4f7f\u7528\u5b9e\u4f53\u7f16\u7801\u3002<\/p>\n\n\n\n
          \n\n\n\n
          5. HTML \u8868\u5355\u5904\u7406\u7528\u6237\u8f93\u5165<\/strong><\/h3>\n\n\n\n
          \u5f53\u7528\u6237\u901a\u8fc7\u8868\u5355\u63d0\u4ea4\u6570\u636e\u65f6\uff0c\u8868\u5355\u4e2d\u7684\u7279\u6b8a\u5b57\u7b26\u4e5f\u9700\u8981\u5904\u7406\uff0c\u4ee5\u907f\u514d\u51fa\u73b0\u610f\u5916\u7684\u89e3\u6790\u7ed3\u679c\u3002\u4f8b\u5982\uff0c<<\/code> \u548c ><\/code> \u5b57\u7b26\u5982\u679c\u76f4\u63a5\u8f93\u5165\uff0c\u53ef\u80fd\u4f1a\u88ab\u6d4f\u89c8\u5668\u89e3\u6790\u4e3a HTML \u6807\u7b7e\u3002<\/p>\n\n\n\n
          \u89e3\u51b3\u65b9\u6848<\/strong>\uff1a\u53ef\u4ee5\u4f7f\u7528 JavaScript \u6216\u670d\u52a1\u5668\u7aef\u7684\u4ee3\u7801\u5bf9\u8868\u5355\u8f93\u5165\u8fdb\u884c\u8f6c\u4e49\uff0c\u786e\u4fdd\u63d0\u4ea4\u7684\u7279\u6b8a\u5b57\u7b26\u4e0d\u88ab\u9519\u8bef\u89e3\u6790\u3002<\/p>\n\n\n\n
          JavaScript \u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n
          function escapeHtml(str) {\n    return str.replace(\/[&<>\"']\/g, function(char) {\n        return {\n            '&': '&amp;',\n            '<': '&lt;',\n            '>': '&gt;',\n            '\"': '&quot;',\n            \"'\": '&apos;'\n        }[char];\n    });\n}\n\nvar userInput = \"<script>alert('XSS');<\/script>\";\nvar safeInput = escapeHtml(userInput);\nconsole.log(safeInput); \/\/ Output: &lt;script&gt;alert('XSS');&lt;\/script&gt;<\/code><\/pre>\n\n\n\n
          \u8fd9\u6837\uff0c\u901a\u8fc7 escapeHtml<\/code> \u51fd\u6570\uff0c\u6240\u6709\u7279\u6b8a\u5b57\u7b26\u90fd\u88ab\u6b63\u786e\u5730\u8f6c\u4e49\uff0c\u9632\u6b62 XSS \u653b\u51fb\u3002<\/p>\n\n\n\n
          \n\n\n\n
          6. \u663e\u793a\u591a\u5b57\u8282\u5b57\u7b26<\/strong><\/h3>\n\n\n\n
          \u5982\u679c\u4f60\u9700\u8981\u663e\u793a\u5176\u4ed6\u591a\u5b57\u8282\u5b57\u7b26\uff08\u5982\u8868\u60c5\u7b26\u53f7\u3001\u5e0c\u814a\u5b57\u6bcd\u7b49\uff09\uff0c\u4f60\u53ef\u4ee5\u76f4\u63a5\u5728 HTML \u4e2d\u5d4c\u5165\u8fd9\u4e9b\u5b57\u7b26\uff0c\u6216\u4f7f\u7528 Unicode \u5b57\u7b26\u5b9e\u4f53\u3002<\/p>\n\n\n\n
          \u4f8b\u5982\uff0c\u4f7f\u7528 Unicode \u663e\u793a\u4e00\u4e2a\u7231\u5fc3\u7b26\u53f7 \u2665<\/code>\uff1a<\/p>\n\n\n\n
          <p>&#9829; This is a heart.<\/p><\/code><\/pre>\n\n\n\n
          \u6216\u76f4\u63a5\u5728 HTML \u4e2d\u4f7f\u7528\uff1a<\/p>\n\n\n\n
          <p>\u2764\ufe0f This is a heart.<\/p><\/code><\/pre>\n\n\n\n
          \n\n\n\n
          7. \u4f7f\u7528 Unicode \u8f6c\u4e49\u5b57\u7b26<\/strong><\/h3>\n\n\n\n
          \u5982\u679c\u9700\u8981\u5728 HTML \u4e2d\u63d2\u5165\u67d0\u4e9b\u975e\u5e38\u89c4\u5b57\u7b26\u800c\u4e0d\u76f4\u63a5\u8f93\u5165\u5b83\u4eec\uff0c\u53ef\u4ee5\u4f7f\u7528 Unicode \u8f6c\u4e49\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u8981\u63d2\u5165\u4e00\u4e2a\u8868\u60c5\u7b26\u53f7\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u5f0f\uff1a<\/p>\n\n\n\n
          <p>&#128512; This is a smiley face.<\/p><\/code><\/pre>\n\n\n\n
          \u8fd9\u5c06\u663e\u793a\u4e00\u4e2a\u7b11\u8138\u8868\u60c5\u7b26\u53f7\u3002<\/p>\n\n\n\n
          \n\n\n\n
          \u603b\u7ed3<\/h3>\n\n\n\n
          \u5728 HTML \u4e2d\u6709\u6548\u4f7f\u7528\u7279\u6b8a\u5b57\u7b26\uff0c\u5173\u952e\u5728\u4e8e\uff1a<\/p>\n\n\n\n
            \n
          1. \u9632\u6b62\u89e3\u6790\u9519\u8bef<\/strong>\uff1a\u901a\u8fc7\u5b57\u7b26\u5b9e\u4f53\u8f6c\u4e49 <<\/code>\u3001><\/code>\u3001&<\/code>\u3001\"<\/code> \u7b49\u7279\u6b8a\u5b57\u7b26\u3002<\/li>\n\n\n\n
          2. \u786e\u4fdd\u5b89\u5168\u6027<\/strong>\uff1a\u9632\u6b62 XSS \u653b\u51fb\uff0c\u7279\u522b\u662f\u5904\u7406\u7528\u6237\u8f93\u5165\u65f6\uff0c\u786e\u4fdd\u7279\u6b8a\u5b57\u7b26\u88ab\u6b63\u786e\u8f6c\u4e49\u3002<\/li>\n\n\n\n
          3. \u591a\u8bed\u8a00\u652f\u6301<\/strong>\uff1a\u901a\u8fc7\u6b63\u786e\u8bbe\u7f6e\u5b57\u7b26\u96c6\uff08\u5982 UTF-8\uff09\u652f\u6301\u591a\u8bed\u8a00\u5b57\u7b26\u7684\u663e\u793a\u3002<\/li>\n\n\n\n
          4. \u8868\u5355\u5904\u7406<\/strong>\uff1a\u5bf9\u7528\u6237\u63d0\u4ea4\u7684\u6570\u636e\u8fdb\u884c\u8f6c\u4e49\uff0c\u4ee5\u4fdd\u8bc1\u6570\u636e\u7684\u5b89\u5168\u6027\u548c\u663e\u793a\u7684\u6b63\u786e\u6027\u3002<\/li>\n<\/ol>\n\n\n\n
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