{"id":1891,"date":"2025-02-22T13:15:30","date_gmt":"2025-02-22T05:15:30","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=1891"},"modified":"2025-02-22T13:15:30","modified_gmt":"2025-02-22T05:15:30","slug":"html-%e5%9b%be%e5%83%8f","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/02\/22\/html-%e5%9b%be%e5%83%8f\/","title":{"rendered":"HTML\u00a0\u56fe\u50cf"},"content":{"rendered":"\n

\u5728 HTML \u4e2d\uff0c\u56fe\u50cf\u901a\u5e38\u4f7f\u7528 <img><\/code> \u6807\u7b7e\u63d2\u5165\u5230\u7f51\u9875\u4e2d\u3002<img><\/code> \u6807\u7b7e\u662f\u4e00\u4e2a\u81ea\u95ed\u5408\u6807\u7b7e\uff0c\u7528\u4e8e\u5728\u7f51\u9875\u4e0a\u663e\u793a\u56fe\u50cf\u3002\u5b83\u4e0d\u9700\u8981\u5173\u95ed\u6807\u7b7e\uff0c\u56e0\u4e3a\u5176\u529f\u80fd\u4ec5\u9650\u4e8e\u5c55\u793a\u56fe\u50cf\u3002<\/p>\n\n\n\n

1. \u57fa\u672c\u7684 <img><\/code> \u6807\u7b7e\u8bed\u6cd5<\/strong><\/h3>\n\n\n\n
<img src=\"image.jpg\" alt=\"\u63cf\u8ff0\u6587\u672c\"><\/code><\/pre>\n\n\n\n
    \n
  • src<\/code> \u5c5e\u6027<\/strong>\uff1a\u6307\u5b9a\u56fe\u50cf\u7684\u8def\u5f84\uff08\u53ef\u4ee5\u662f\u672c\u5730\u6587\u4ef6\u8def\u5f84\u6216 URL \u5730\u5740\uff09\u3002<\/li>\n\n\n\n
  • alt<\/code> \u5c5e\u6027<\/strong>\uff1a\u4e3a\u56fe\u50cf\u63d0\u4f9b\u66ff\u4ee3\u6587\u672c\u63cf\u8ff0\u3002\u5b83\u7528\u4e8e\u5f53\u56fe\u50cf\u65e0\u6cd5\u52a0\u8f7d\u65f6\u663e\u793a\uff0c\u4e5f\u6709\u52a9\u4e8e\u641c\u7d22\u5f15\u64ce\u4f18\u5316\uff08SEO\uff09\u548c\u65e0\u969c\u788d\u8bbf\u95ee\uff08\u4f8b\u5982\u5c4f\u5e55\u9605\u8bfb\u5668\u7528\u6237\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
    2. \u5e38\u89c1\u7684\u5c5e\u6027<\/strong><\/h3>\n\n\n\n
    1. src<\/code> \u5c5e\u6027<\/strong><\/h4>\n\n\n\n
    src<\/code> \u5c5e\u6027\u5b9a\u4e49\u4e86\u56fe\u50cf\u7684\u6765\u6e90\u3002\u5b83\u53ef\u4ee5\u6307\u5411\u672c\u5730\u8def\u5f84\u6216\u7f51\u7edc URL\u3002<\/p>\n\n\n\n
      \n
    • \u672c\u5730\u8def\u5f84<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
        <img src=\"images\/photo.jpg\" alt=\"A photo of a cat\"><\/code><\/pre>\n\n\n\n
        \n
      • \u7f51\u7edc URL<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
          <img src=\"https:\/\/www.example.com\/images\/photo.jpg\" alt=\"A photo from the internet\"><\/code><\/pre>\n\n\n\n
        2. alt<\/code> \u5c5e\u6027<\/strong><\/h4>\n\n\n\n
        alt<\/code> \u5c5e\u6027\u63d0\u4f9b\u4e86\u4e00\u4e2a\u56fe\u50cf\u7684\u66ff\u4ee3\u6587\u672c\uff0c\u4f9b\u7528\u6237\u65e0\u6cd5\u770b\u5230\u56fe\u50cf\u65f6\u663e\u793a\uff0c\u6216\u8005\u5c4f\u5e55\u9605\u8bfb\u5668\u7b49\u8f85\u52a9\u6280\u672f\u4f7f\u7528\u3002<\/p>\n\n\n\n
        <img src=\"logo.png\" alt=\"Company Logo\"><\/code><\/pre>\n\n\n\n
        3. width<\/code> \u548c height<\/code> \u5c5e\u6027<\/strong><\/h4>\n\n\n\n
        width<\/code> \u548c height<\/code> \u5c5e\u6027\u7528\u6765\u6307\u5b9a\u56fe\u50cf\u7684\u663e\u793a\u5c3a\u5bf8\uff0c\u5355\u4f4d\u53ef\u4ee5\u662f\u50cf\u7d20\uff08px\uff09\u6216\u767e\u5206\u6bd4\u3002<\/p>\n\n\n\n
        <img src=\"image.jpg\" alt=\"Sample Image\" width=\"300\" height=\"200\"><\/code><\/pre>\n\n\n\n
        4. title<\/code> \u5c5e\u6027<\/strong><\/h4>\n\n\n\n
        title<\/code> \u5c5e\u6027\u4e3a\u56fe\u50cf\u63d0\u4f9b\u4e86\u4e00\u4e2a\u989d\u5916\u7684\u63d0\u793a\uff0c\u5f53\u7528\u6237\u5c06\u9f20\u6807\u60ac\u505c\u5728\u56fe\u50cf\u4e0a\u65f6\u663e\u793a\u8fd9\u4e2a\u6587\u672c\u3002<\/p>\n\n\n\n
        <img src=\"image.jpg\" alt=\"Sample Image\" title=\"Click to view larger image\"><\/code><\/pre>\n\n\n\n
        5. loading<\/code> \u5c5e\u6027<\/strong><\/h4>\n\n\n\n
        loading<\/code> \u5c5e\u6027\u6307\u5b9a\u56fe\u50cf\u7684\u52a0\u8f7d\u65b9\u5f0f\uff0c\u5e38\u7528\u7684\u503c\u662f lazy<\/code>\uff0c\u8868\u793a\u5ef6\u8fdf\u52a0\u8f7d\u56fe\u50cf\uff0c\u53ea\u6709\u5f53\u56fe\u50cf\u8fdb\u5165\u89c6\u53e3\u65f6\u624d\u52a0\u8f7d\uff0c\u80fd\u63d0\u9ad8\u9875\u9762\u7684\u52a0\u8f7d\u6027\u80fd\u3002<\/p>\n\n\n\n
        <img src=\"image.jpg\" alt=\"Lazy loaded image\" loading=\"lazy\"><\/code><\/pre>\n\n\n\n
        3. \u56fe\u50cf\u683c\u5f0f<\/strong><\/h3>\n\n\n\n
        \u5e38\u89c1\u7684\u56fe\u50cf\u683c\u5f0f\u5305\u62ec\uff1a<\/p>\n\n\n\n
          \n
        • JPEG<\/strong>\uff08.jpg<\/code>, .jpeg<\/code>\uff09\uff1a\u9002\u7528\u4e8e\u5927\u591a\u6570\u7167\u7247\u548c\u590d\u6742\u56fe\u50cf\uff0c\u652f\u6301\u9ad8\u538b\u7f29\u7387\u3002<\/li>\n\n\n\n
        • PNG<\/strong>\uff08.png<\/code>\uff09\uff1a\u652f\u6301\u900f\u660e\u80cc\u666f\uff0c\u9002\u7528\u4e8e\u56fe\u6807\u548c\u56fe\u5f62\u3002<\/li>\n\n\n\n
        • GIF<\/strong>\uff08.gif<\/code>\uff09\uff1a\u9002\u7528\u4e8e\u52a8\u753b\u56fe\u50cf\uff0c\u652f\u6301\u900f\u660e\u548c\u591a\u5e27\u52a8\u753b\u3002<\/li>\n\n\n\n
        • SVG<\/strong>\uff08.svg<\/code>\uff09\uff1a\u53ef\u4f38\u7f29\u77e2\u91cf\u56fe\u5f62\uff0c\u9002\u7528\u4e8e\u9ad8\u8d28\u91cf\u7684\u56fe\u5f62\uff0c\u56fe\u50cf\u53ef\u4ee5\u4efb\u610f\u7f29\u653e\u800c\u4e0d\u5931\u771f\u3002<\/li>\n\n\n\n
        • WebP<\/strong>\uff1a\u4e00\u79cd\u73b0\u4ee3\u56fe\u50cf\u683c\u5f0f\uff0c\u63d0\u4f9b\u66f4\u597d\u7684\u538b\u7f29\u7387\u548c\u8d28\u91cf\uff0c\u9002\u7528\u4e8e\u7f51\u9875\u4f7f\u7528\u3002<\/li>\n<\/ul>\n\n\n\n
          4. \u56fe\u50cf\u7684\u54cd\u5e94\u5f0f\u8bbe\u8ba1<\/strong><\/h3>\n\n\n\n
          \u4e3a\u4e86\u4f7f\u56fe\u50cf\u5728\u4e0d\u540c\u7684\u5c4f\u5e55\u5c3a\u5bf8\u4e0a\u663e\u793a\u826f\u597d\uff0c\u53ef\u4ee5\u4f7f\u7528 CSS \u6765\u63a7\u5236\u56fe\u50cf\u7684\u5927\u5c0f\u3002\u5e38\u89c1\u7684\u505a\u6cd5\u662f\u4f7f\u7528 max-width: 100%<\/code>\uff0c\u786e\u4fdd\u56fe\u50cf\u4e0d\u4f1a\u8d85\u51fa\u5176\u5bb9\u5668\u7684\u5bbd\u5ea6\u3002<\/p>\n\n\n\n
          \u793a\u4f8b\uff1a<\/h4>\n\n\n\n
          img {\n    max-width: 100%;\n    height: auto;\n}<\/code><\/pre>\n\n\n\n
          \u8fd9\u6837\u8bbe\u7f6e\u540e\uff0c\u56fe\u50cf\u4f1a\u6839\u636e\u5bb9\u5668\u7684\u5bbd\u5ea6\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\uff0c\u800c\u4e0d\u4f1a\u53d8\u5f62\u3002<\/p>\n\n\n\n
          5. \u80cc\u666f\u56fe\u50cf<\/strong><\/h3>\n\n\n\n
          \u9664\u4e86\u4f7f\u7528 <img><\/code> \u6807\u7b7e\u63d2\u5165\u56fe\u50cf\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 CSS \u7684 background-image<\/code> \u5c5e\u6027\u4e3a\u5143\u7d20\u8bbe\u7f6e\u80cc\u666f\u56fe\u50cf\u3002<\/p>\n\n\n\n
          \u793a\u4f8b\uff1a<\/h4>\n\n\n\n
          div {\n    background-image: url('background.jpg');\n    background-size: cover;  \/* \u786e\u4fdd\u56fe\u50cf\u8986\u76d6\u6574\u4e2a\u5143\u7d20 *\/\n    background-position: center;  \/* \u56fe\u50cf\u5c45\u4e2d *\/\n}<\/code><\/pre>\n\n\n\n
          6. \u56fe\u50cf\u7684\u53ef\u8bbf\u95ee\u6027<\/strong><\/h3>\n\n\n\n
          \u56fe\u50cf\u7684\u53ef\u8bbf\u95ee\u6027\u975e\u5e38\u91cd\u8981\uff0c\u5c24\u5176\u662f\u5728\u4e3a\u89c6\u89c9\u969c\u788d\u7528\u6237\u63d0\u4f9b\u826f\u597d\u4f53\u9a8c\u65f6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u589e\u52a0\u56fe\u50cf\u53ef\u8bbf\u95ee\u6027\u7684\u6280\u5de7\uff1a<\/p>\n\n\n\n
            \n
          • \u4f7f\u7528 alt<\/code> \u5c5e\u6027<\/strong>\uff1a\u6bcf\u4e2a\u56fe\u50cf\u90fd\u5e94\u8be5\u6709\u6e05\u6670\u7684\u66ff\u4ee3\u6587\u672c\u63cf\u8ff0\u3002<\/li>\n\n\n\n
          • \u907f\u514d\u4f7f\u7528\u56fe\u50cf\u4f5c\u4e3a\u7eaf\u6587\u672c<\/strong>\uff1a\u5982\u679c\u56fe\u50cf\u53ea\u662f\u4e3a\u4e86\u663e\u793a\u6587\u672c\uff08\u5982\u6807\u8bed\uff09\uff0c\u4f7f\u7528\u6587\u672c\u800c\u4e0d\u662f\u56fe\u50cf\u3002<\/li>\n\n\n\n
          • \u63d0\u4f9b\u5408\u9002\u7684\u989c\u8272\u5bf9\u6bd4\u5ea6<\/strong>\uff1a\u786e\u4fdd\u56fe\u50cf\u4e0a\u7684\u6587\u5b57\u4e0e\u80cc\u666f\u6709\u8db3\u591f\u7684\u5bf9\u6bd4\u5ea6\uff0c\u4fbf\u4e8e\u89c6\u529b\u8f83\u5dee\u7684\u7528\u6237\u9605\u8bfb\u3002<\/li>\n<\/ul>\n\n\n\n
            7. \u56fe\u50cf\u4f5c\u4e3a\u94fe\u63a5<\/strong><\/h3>\n\n\n\n
            \u53ef\u4ee5\u5c06 <img><\/code> \u6807\u7b7e\u5d4c\u5165\u5230 <a><\/code> \u6807\u7b7e\u4e2d\uff0c\u4f7f\u56fe\u50cf\u53d8\u6210\u4e00\u4e2a\u53ef\u70b9\u51fb\u7684\u94fe\u63a5\u3002<\/p>\n\n\n\n
            \u793a\u4f8b\uff1a<\/h4>\n\n\n\n
            <a href=\"https:\/\/www.example.com\">\n    <img src=\"logo.jpg\" alt=\"Go to example website\">\n<\/a><\/code><\/pre>\n\n\n\n
            \u8fd9\u6837\uff0c\u70b9\u51fb\u56fe\u50cf\u5c31\u4f1a\u8df3\u8f6c\u5230\u6307\u5b9a\u7684\u94fe\u63a5\u3002<\/p>\n\n\n\n
            8. \u56fe\u50cf\u7684\u88c1\u526a\u548c\u88c1\u5207<\/strong><\/h3>\n\n\n\n
            \u4f60\u53ef\u4ee5\u4f7f\u7528 CSS \u6765\u88c1\u526a\u56fe\u50cf\u7684\u90e8\u5206\u5185\u5bb9\uff0c\u901a\u5e38\u901a\u8fc7\u8bbe\u7f6e object-fit<\/code> \u548c object-position<\/code> \u6765\u63a7\u5236\u56fe\u50cf\u7684\u663e\u793a\u6548\u679c\u3002<\/p>\n\n\n\n
            \u793a\u4f8b\uff1a<\/h4>\n\n\n\n
            img {\n    width: 300px;\n    height: 200px;\n    object-fit: cover;  \/* \u88c1\u526a\u5e76\u4fdd\u6301\u56fe\u50cf\u6bd4\u4f8b *\/\n    object-position: center;  \/* \u56fe\u50cf\u5c45\u4e2d *\/\n}<\/code><\/pre>\n\n\n\n
            \u603b\u7ed3<\/h3>\n\n\n\n
              \n
            • <img><\/code> \u6807\u7b7e<\/strong>\u7528\u4e8e\u5728\u7f51\u9875\u4e2d\u5d4c\u5165\u56fe\u50cf\uff0c\u5fc5\u987b\u6709 src<\/code> \u548c alt<\/code> \u5c5e\u6027\u3002<\/li>\n\n\n\n
            • \u56fe\u50cf\u683c\u5f0f\u5305\u62ec JPEG<\/strong>, PNG<\/strong>, GIF<\/strong>, SVG<\/strong>, \u548c WebP<\/strong>\u3002<\/li>\n\n\n\n
            • \u4f7f\u7528 CSS<\/strong> \u53ef\u4ee5\u8bbe\u7f6e\u56fe\u50cf\u7684\u5927\u5c0f\u3001\u54cd\u5e94\u5f0f\u8bbe\u8ba1\u3001\u80cc\u666f\u56fe\u50cf\u7b49\u3002<\/li>\n\n\n\n
            • \u901a\u8fc7 loading=\"lazy\"<\/code> \u53ef\u4ee5\u5ef6\u8fdf\u56fe\u50cf\u52a0\u8f7d\uff0c\u63d0\u5347\u9875\u9762\u6027\u80fd\u3002<\/li>\n\n\n\n
            • \u56fe\u50cf\u7684\u53ef\u8bbf\u95ee\u6027\u975e\u5e38\u91cd\u8981\uff0c\u786e\u4fdd\u4e3a\u6bcf\u4e2a\u56fe\u50cf\u63d0\u4f9b\u5408\u9002\u7684 alt<\/code> \u5c5e\u6027\uff0c\u5e76\u8003\u8651\u5176\u4ed6\u65e0\u969c\u788d\u8bbf\u95ee\u8bbe\u8ba1\u3002<\/li>\n<\/ul>\n\n\n\n
              \u56fe\u50cf\u5728\u7f51\u9875\u4e2d\u7684\u4f5c\u7528\u975e\u5e38\u91cd\u8981\uff0c\u5b83\u80fd\u589e\u52a0\u9875\u9762\u7684\u5438\u5f15\u529b\u548c\u7528\u6237\u4f53\u9a8c\u3002\u638c\u63e1\u5982\u4f55\u9ad8\u6548\u4f7f\u7528\u56fe\u50cf\u662f\u7f51\u9875\u8bbe\u8ba1\u7684\u5173\u952e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
              \u5728 HTML \u4e2d\uff0c\u56fe\u50cf\u901a\u5e38\u4f7f\u7528 <img> \u6807\u7b7e\u63d2\u5165\u5230\u7f51\u9875\u4e2d\u3002<img> \u6807\u7b7e\u662f\u4e00\u4e2a\u81ea […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56],"tags":[],"class_list":["post-1891","post","type-post","status-publish","format-standard","hentry","category-html"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1891","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=1891"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1891\/revisions"}],"predecessor-version":[{"id":1892,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1891\/revisions\/1892"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=1891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=1891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=1891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}