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\u4e0b\u9762\u753b\u56fe\u8be6\u7ec6\u8bf4\u4e00\u4e0b\uff1a<\/p>\n\n\n\n

    \n
  • 1.\u5728\u65e2\u6ca1\u6709CSS\u4e5f\u6ca1\u6709JS\u7684\u60c5\u51b5\u4e0b\uff0cHTML\u6587\u6863\u7684\u89e3\u6790\u8fc7\u7a0b\u4e3a\uff1a<\/li>\n<\/ul>\n\n\n
    \n
    \"\"<\/figure><\/div>\n\n\n

    DOMContentLoaded\u4e8b\u4ef6\u7684\u89e6\u53d1\u65f6\u673a\u4e3a:HTML\u89e3\u6790\u4e3aDOM\u4e4b\u540e\u3002<\/p>\n\n\n\n

      \n
    • 2.\u6709CSS\u65e0JS\u7684\u60c5\u51b5\u4e0b\uff0cHTML\u6587\u6863\u89e3\u6790\u8fc7\u7a0b\u4e3a\uff1a<\/li>\n<\/ul>\n\n\n
      \n
      \"\"<\/figure><\/div>\n\n\n

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        \n
      • 3.\u5f53\u6709JS\u65f6\uff0cHTML\u6587\u6863\u89e3\u6790\u8fc7\u7a0b\u4e3a\uff1a<\/li>\n<\/ul>\n\n\n
        \n
        \"\"<\/figure><\/div>\n\n\n

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        JavaScript \u5f02\u6b65\u52a0\u8f7d(async)<\/strong><\/p>\n\n\n\n

        \n\n\n\n

        \u4e3a\u4f55\u4f7f\u7528\u5f02\u6b65\u52a0\u8f7d\u539f\u56e0\uff1a<\/p>\n\n\n\n

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        \u5173\u4e8e\u540c\u6b65\u52a0\u8f7d\u4e0e\u5f02\u6b65\u52a0\u8f7d\u7684\u533a\u522b<\/p>\n\n\n\n

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        \u5f02\u6b65\u52a0\u8f7d\uff1a\u5f02\u6b65\u52a0\u8f7d\u53c8\u53eb\u975e\u963b\u585e\uff0c\u6d4f\u89c8\u5668\u5728\u4e0b\u8f7d\u6267\u884c js \u540c\u65f6\uff0c\u8fd8\u4f1a\u7ee7\u7eed\u8fdb\u884c\u540e\u7eed\u9875\u9762\u7684\u5904\u7406\u3002<\/p>\n\n\n

        \n
        \"\"<\/figure><\/div>\n\n\n

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        \u5bf9\u6b64\uff0c\u300aJavaScript\u9ad8\u7ea7\u7a0b\u5e8f\u8bbe\u8ba1\u300b\u4e00\u4e66\u7684\u89e3\u91ca\u662f\uff1a\u5e26async\u7684\u811a\u672c\u4e00\u5b9a\u4f1a\u5728load\u4e8b\u4ef6\u4e4b\u524d\u6267\u884c\uff0c\u53ef\u80fd\u4f1a\u5728DOMContentLoaded\u4e4b\u524d\u6216\u4e4b\u540e\u6267\u884c\u3002<\/p>\n\n\n\n

        \u4e3a\u4ec0\u4e48async\u811a\u672c\u53ef\u80fd\u4f1a\u5728DOMContentLoaded\u4e4b\u524d\u6216\u4e4b\u540e\u6267\u884c\u5462\uff1f\u6216\u8005\u8bf4\uff0c\u4e3a\u4ec0\u4e48DOMContentLoaded\u4e8b\u4ef6\u7684\u89e6\u53d1\u65e2\u53ef\u80fd\u5728async\u811a\u672c\u6267\u884c\u524d\u3001\u53c8\u53ef\u80fd\u5728async\u811a\u672c\u6267\u884c\u540e\u5462\uff1f \u8fd9\u662f\u56e0\u4e3a\uff0casync \u6807\u7b7e\u7684\u811a\u672c\u52a0\u8f7d\u5b8c\u6bd5\u7684\u65f6\u95f4\u6709\u4e24\u79cd\u60c5\u51b5\uff1a<\/p>\n\n\n\n

        \u60c5\u51b51\uff1a HTML \u8fd8\u6ca1\u6709\u88ab\u89e3\u6790\u5b8c\u7684\u65f6\u5019\uff0casync\u811a\u672c\u5df2\u7ecf\u52a0\u8f7d\u5b8c\u4e86\uff0c\u90a3\u4e48 HTML \u505c\u6b62\u89e3\u6790\uff0c\u53bb\u6267\u884c\u811a\u672c\uff0c\u811a\u672c\u6267\u884c\u5b8c\u6bd5\u540e\u89e6\u53d1DOMContentLoaded\u4e8b\u4ef6\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n

        \n
        \"\"<\/figure><\/div>\n\n\n

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        \n
        \"\"<\/figure><\/div>\n\n\n

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        JavaScript \u5ef6\u8fdf\u52a0\u8f7d(defer)<\/strong><\/p>\n\n\n\n

        \n\n\n\n

        \u5982\u679c script \u6807\u7b7e\u4e2d\u5305\u542b defer\uff0c\u90a3\u4e48\u8fd9\u4e00\u5757\u811a\u672c\u5c06\u4e0d\u4f1a\u5f71\u54cd HTML \u6587\u6863\u7684\u89e3\u6790\uff0c\u800c\u662f\u7b49\u5230 HTML \u89e3\u6790\u5b8c\u6210\u540e\u624d\u4f1a\u6267\u884c\u3002\u800c DOMContentLoaded \u53ea\u6709\u5728 defer \u811a\u672c\u6267\u884c\u7ed3\u675f\u540e\u624d\u4f1a\u88ab\u89e6\u53d1\u3002<\/p>\n\n\n\n

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        HTML \u8fd8\u6ca1\u6709\u88ab\u89e3\u6790\u5b8c\u7684\u65f6\u5019\uff0cdefer\u811a\u672c\u5df2\u7ecf\u52a0\u8f7d\u5b8c\u4e86\uff0c\u90a3\u4e48 \u7b49\u5f85HTML \u89e3\u6790\u5b8c\u6210\u540e\u6267\u884c\u811a\u672c\uff0c\u811a\u672c\u6267\u884c\u5b8c\u6bd5\u540e\u89e6\u53d1DOMContentLoaded\u4e8b\u4ef6\u3002<\/p>\n\n\n\n

        defer\u811a\u672c\u540c\u6837\u5305\u542b\u4e24\u79cd\u60c5\u51b5\uff1a<\/p>\n\n\n\n

        \u60c5\u51b51\uff1aHTML\u8fd8\u6ca1\u89e3\u6790\u5b8c\u6210\u65f6\uff0cdefer\u811a\u672c\u5df2\u7ecf\u52a0\u8f7d\u5b8c\u6bd5\uff0c\u90a3\u4e48defer\u811a\u672c\u5c06\u7b49\u5f85HTML\u89e3\u6790\u5b8c\u6210\u540e\u518d\u6267\u884c\u3002defer\u811a\u672c\u6267\u884c\u5b8c\u6bd5\u540e\u89e6\u53d1DOMContentLoaded\u4e8b\u4ef6\u3002\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n\n\n

        \n
        \"\"<\/figure><\/div>\n\n\n

        \u60c5\u51b52\uff1aHTML\u89e3\u6790\u5b8c\u6210\u65f6\uff0cdefer\u811a\u672c\u8fd8\u6ca1\u52a0\u8f7d\u5b8c\u6bd5\uff0c\u90a3\u4e48defer\u811a\u672c\u7ee7\u7eed\u52a0\u8f7d\uff0c\u52a0\u8f7d\u5b8c\u6210\u540e\u76f4\u63a5\u6267\u884c\uff0c\u6267\u884c\u5b8c\u6bd5\u540e\u89e6\u53d1DOMContentLoaded\u4e8b\u4ef6\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n

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