{"id":3272,"date":"2024-11-10T15:17:46","date_gmt":"2024-11-10T07:17:46","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3272\/"},"modified":"2024-11-10T15:17:46","modified_gmt":"2024-11-10T07:17:46","slug":"js%e7%a8%8b%e5%ba%8f%e5%a6%82%e4%bd%95%e8%bf%90%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3272\/","title":{"rendered":"js\u7a0b\u5e8f\u5982\u4f55\u8fd0\u884c"},"content":{"rendered":"<blockquote><p>\n  javascript \u7a0b\u5e8f\u6267\u884c\u8fc7\u7a0b\u5305\u62ec\uff1a\u89e3\u6790\u3001\u7f16\u8bd1\u3001\u89e3\u91ca\u548c\u5783\u573e\u56de\u6536\u3002\u5f71\u54cd\u6267\u884c\u901f\u5ea6\u7684\u56e0\u7d20\u6709\u4ee3\u7801\u590d\u6742\u6027\u3001dom \u64cd\u4f5c\u3001\u5f02\u6b65\u56de\u8c03\u548c\u6d4f\u89c8\u5668\u7248\u672c\u3002\u4f18\u5316\u6267\u884c\u63aa\u65bd\u5305\u62ec\u51cf\u5c11\u4ee3\u7801\u590d\u6742\u6027\u3001\u907f\u514d\u8fc7\u591a dom \u64cd\u4f5c\u3001\u4f7f\u7528\u5f02\u6b65\u7f16\u7a0b\u548c\u5229\u7528\u6d4f\u89c8\u5668\u5f00\u53d1\u5de5\u5177\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110808521360387.jpg\" class=\"aligncenter\" title=\"js\u7a0b\u5e8f\u5982\u4f55\u8fd0\u884c\u63d2\u56fe\" alt=\"js\u7a0b\u5e8f\u5982\u4f55\u8fd0\u884c\u63d2\u56fe\" \/><\/p>\n<p><strong>JavaScript \u7a0b\u5e8f\u5982\u4f55\u8fd0\u884c<\/strong><\/p>\n<p><strong>\u6982\u8ff0<\/strong><br \/>JavaScript \u662f\u4e00\u79cd\u811a\u672c\u8bed\u8a00\uff0c\u5e7f\u6cdb\u7528\u4e8e\u521b\u5efa\u4ea4\u4e92\u5f0f\u7f51\u9875\u3002\u5b83\u5728\u7f51\u9875\u52a0\u8f7d\u65f6\u7531\u6d4f\u89c8\u5668\u7acb\u5373\u6267\u884c\uff0c\u4ece\u800c\u4f7f\u7f51\u9875\u80fd\u591f\u5728\u7528\u6237\u4e0e\u4e4b\u4e92\u52a8\u65f6\u52a8\u6001\u53d8\u5316\u3002<\/p>\n<p><strong>\u6267\u884c\u8fc7\u7a0b<\/strong><\/p>\n<p>JavaScript \u7a0b\u5e8f\u7684\u6267\u884c\u8fc7\u7a0b\u4e00\u822c\u5305\u62ec\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u89e3\u6790<\/strong><br \/>\u6d4f\u89c8\u5668\u9996\u5148\u89e3\u6790 JavaScript \u4ee3\u7801\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u79f0\u4e3a\u62bd\u8c61\u8bed\u6cd5\u6811 (AST) \u7684\u6570\u636e\u7ed3\u6784\u3002AST \u8868\u793a\u7a0b\u5e8f\u7684\u7ed3\u6784\uff0c\u5305\u542b\u4e86\u4ee3\u7801\u4e2d\u6240\u6709\u5143\u7d20\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n<p><strong>2. \u7f16\u8bd1<\/strong><br \/>AST \u968f\u540e\u88ab\u7f16\u8bd1\u6210\u5b57\u8282\u7801\uff0c\u8fd9\u662f\u4e00\u79cd\u7279\u5b9a\u4e8e\u6d4f\u89c8\u5668\u7684\u4e2d\u4ecb\u4ee3\u7801\u3002\u5b57\u8282\u7801\u6bd4 JavaScript \u4ee3\u7801\u66f4\u7d27\u51d1\u3001\u66f4\u6709\u6548\u7387\u3002<\/p>\n<p><strong>3. \u89e3\u91ca<\/strong><br \/>\u6d4f\u89c8\u5668\u4e2d\u7684 JavaScript \u5f15\u64ce\u89e3\u91ca\u5b57\u8282\u7801\uff0c\u5e76\u5c06\u5176\u9010\u884c\u6267\u884c\u3002\u5b83\u521b\u5efa\u4e00\u4e2a\u79f0\u4e3a\u6267\u884c\u4e0a\u4e0b\u6587\u7684\u5bf9\u8c61\uff0c\u5176\u4e2d\u5305\u542b\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u4ee3\u7801\u7684\u53d8\u91cf\u548c\u3002<\/p>\n<p><strong>4. \u5783\u573e\u56de\u6536<\/strong><br \/>\u5f53 JavaScript \u5f15\u64ce\u4e0d\u518d\u9700\u8981\u67d0\u4e2a\u53d8\u91cf\u6216\u5bf9\u8c61\u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u5c06\u5176\u91ca\u653e\uff0c\u4ece\u800c\u91ca\u653e\u5185\u5b58\u3002\u8fd9\u4e00\u8fc7\u7a0b\u79f0\u4e3a\u5783\u573e\u56de\u6536\u3002<\/p>\n<p><strong>\u5f71\u54cd\u6267\u884c\u7684\u56e0\u7d20<\/strong><\/p>\n<p>JavaScript \u7a0b\u5e8f\u7684\u6267\u884c\u901f\u5ea6\u548c\u54cd\u5e94\u80fd\u529b\u53d7\u4ee5\u4e0b\u56e0\u7d20\u5f71\u54cd\uff1a<\/p>\n<ul>\n<li> <strong>\u4ee3\u7801\u590d\u6742\u6027\uff1a<\/strong>\u4ee3\u7801\u8d8a\u590d\u6742\uff0c\u89e3\u6790\u548c\u7f16\u8bd1\u6240\u9700\u7684\u65f6\u95f4\u5c31\u8d8a\u591a\u3002<\/li>\n<li> <strong>DOM \u64cd\u4f5c\uff1a<\/strong>\u4e0e\u7f51\u9875\u6587\u6863\u5bf9\u8c61\u6a21\u578b (DOM) \u7684\u4ea4\u4e92\u53ef\u80fd\u4f1a\u4f7f\u7a0b\u5e8f\u53d8\u6162\u3002<\/li>\n<li> <strong>\u5f02\u6b65\u56de\u8c03\uff1a<\/strong>\u5f02\u6b65\u56de\u8c03\u53ef\u80fd\u4f1a\u5ef6\u8fdf\u7a0b\u5e8f\u7684\u6267\u884c\uff0c\u76f4\u5230\u6536\u5230\u54cd\u5e94\u3002<\/li>\n<li> <strong>\u6d4f\u89c8\u5668\u7248\u672c\uff1a<\/strong>\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u7248\u672c\u4f7f\u7528\u4e0d\u540c\u7684 JavaScript \u5f15\u64ce\uff0c\u6027\u80fd\u53ef\u80fd\u4f1a\u56e0\u7248\u672c\u800c\u5f02\u3002<\/li>\n<\/ul>\n<p><strong>\u4f18\u5316 JavaScript \u6267\u884c<\/strong><\/p>\n<p>\u4e3a\u4e86\u4f18\u5316 JavaScript \u7a0b\u5e8f\u7684\u6267\u884c\uff0c\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u63aa\u65bd\uff1a<\/p>\n<ul>\n<li> <strong>\u51cf\u5c11\u4ee3\u7801\u590d\u6742\u6027\uff1a<\/strong>\u4f7f\u7528\u5e72\u51c0\u3001\u7b80\u6d01\u7684\u4ee3\u7801\u7ed3\u6784\u3002<\/li>\n<li> <strong>\u907f\u514d\u8fc7\u591a\u7684 DOM \u64cd\u4f5c\uff1a<\/strong>\u5c3d\u53ef\u80fd\u4f7f\u7528\u4e8b\u4ef6\u4ee3\u7406\u6216\u5176\u4ed6\u6280\u672f\u6765\u51cf\u5c11 DOM \u4ea4\u4e92\u3002<\/li>\n<li> <strong>\u4f7f\u7528\u5f02\u6b65\u7f16\u7a0b\uff1a<\/strong>\u5c06\u8017\u65f6\u64cd\u4f5c\u653e\u5165\u56de\u8c03\u6216 Promise\uff0c\u4ee5\u907f\u514d\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002<\/li>\n<li> <strong>\u5229\u7528\u6d4f\u89c8\u5668\u5f00\u53d1\u5de5\u5177\uff1a<\/strong>\u4f7f\u7528\u6d4f\u89c8\u5668\u63d0\u4f9b\u7684\u5de5\u5177\u6765\u5206\u6790\u7a0b\u5e8f\u6027\u80fd\u5e76\u8bc6\u522b\u74f6\u9888\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u7a0b\u5e8f\u5982\u4f55\u8fd0\u884c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>javascript \u7a0b\u5e8f\u6267\u884c\u8fc7\u7a0b\u5305\u62ec\uff1a\u89e3\u6790\u3001\u7f16\u8bd1\u3001\u89e3\u91ca\u548c\u5783\u573e\u56de\u6536\u3002\u5f71\u54cd\u6267\u884c\u901f\u5ea6\u7684\u56e0\u7d20\u6709\u4ee3\u7801\u590d\u6742\u6027\u3001dom \u64cd\u4f5c\u3001\u5f02\u6b65\u56de\u8c03\u548c\u6d4f\u89c8\u5668\u7248\u672c\u3002\u4f18\u5316\u6267\u884c\u63aa\u65bd\u5305\u62ec\u51cf\u5c11\u4ee3\u7801\u590d\u6742\u6027\u3001\u907f\u514d\u8fc7\u591a dom \u64cd\u4f5c\u3001\u4f7f\u7528\u5f02\u6b65\u7f16\u7a0b\u548c\u5229\u7528\u6d4f\u89c8\u5668\u5f00\u53d1\u5de5\u5177\u3002 JavaScript \u7a0b\u5e8f\u5982\u4f55\u8fd0\u884c \u6982\u8ff0JavaScript \u662f\u4e00\u79cd\u811a\u672c\u8bed\u8a00\uff0c\u5e7f\u6cdb\u7528\u4e8e\u521b\u5efa\u4ea4\u4e92\u5f0f\u7f51\u9875\u3002\u5b83\u5728\u7f51\u9875\u52a0\u8f7d\u65f6\u7531\u6d4f\u89c8\u5668\u7acb\u5373\u6267\u884c\uff0c\u4ece\u800c\u4f7f\u7f51\u9875\u80fd\u591f\u5728\u7528\u6237\u4e0e\u4e4b\u4e92\u52a8\u65f6\u52a8\u6001\u53d8\u5316\u3002 \u6267\u884c\u8fc7\u7a0b JavaScript \u7a0b\u5e8f\u7684\u6267\u884c\u8fc7\u7a0b\u4e00\u822c\u5305\u62ec\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u89e3\u6790\u6d4f\u89c8\u5668\u9996\u5148\u89e3\u6790 JavaScript \u4ee3\u7801\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u79f0\u4e3a\u62bd\u8c61\u8bed\u6cd5\u6811 (AST) \u7684\u6570\u636e\u7ed3\u6784\u3002AST \u8868\u793a\u7a0b\u5e8f\u7684\u7ed3\u6784\uff0c\u5305\u542b\u4e86\u4ee3\u7801\u4e2d\u6240\u6709\u5143\u7d20\u4e4b\u95f4\u7684\u5173\u7cfb\u3002 2. \u7f16\u8bd1AST \u968f\u540e\u88ab\u7f16\u8bd1\u6210\u5b57\u8282\u7801\uff0c\u8fd9\u662f\u4e00\u79cd\u7279\u5b9a\u4e8e\u6d4f\u89c8\u5668\u7684\u4e2d\u4ecb\u4ee3\u7801\u3002\u5b57\u8282\u7801\u6bd4 JavaScript \u4ee3\u7801\u66f4\u7d27\u51d1\u3001\u66f4\u6709\u6548\u7387\u3002 3. \u89e3\u91ca\u6d4f\u89c8\u5668\u4e2d\u7684 JavaScript \u5f15\u64ce\u89e3\u91ca\u5b57\u8282\u7801\uff0c\u5e76\u5c06\u5176\u9010\u884c\u6267\u884c\u3002\u5b83\u521b\u5efa\u4e00\u4e2a\u79f0\u4e3a\u6267\u884c\u4e0a\u4e0b\u6587\u7684\u5bf9\u8c61\uff0c\u5176\u4e2d\u5305\u542b\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u4ee3\u7801\u7684\u53d8\u91cf\u548c\u3002 4. \u5783\u573e\u56de\u6536\u5f53 JavaScript \u5f15\u64ce\u4e0d\u518d\u9700\u8981\u67d0\u4e2a\u53d8\u91cf\u6216\u5bf9\u8c61\u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u5c06\u5176\u91ca\u653e\uff0c\u4ece\u800c\u91ca\u653e\u5185\u5b58\u3002\u8fd9\u4e00\u8fc7\u7a0b\u79f0\u4e3a\u5783\u573e\u56de\u6536\u3002 \u5f71\u54cd\u6267\u884c\u7684\u56e0\u7d20 JavaScript \u7a0b\u5e8f\u7684\u6267\u884c\u901f\u5ea6\u548c\u54cd\u5e94\u80fd\u529b\u53d7\u4ee5\u4e0b\u56e0\u7d20\u5f71\u54cd\uff1a \u4ee3\u7801\u590d\u6742\u6027\uff1a\u4ee3\u7801\u8d8a\u590d\u6742\uff0c\u89e3\u6790\u548c\u7f16\u8bd1\u6240\u9700\u7684\u65f6\u95f4\u5c31\u8d8a\u591a\u3002 DOM \u64cd\u4f5c\uff1a\u4e0e\u7f51\u9875\u6587\u6863\u5bf9\u8c61\u6a21\u578b (DOM) \u7684\u4ea4\u4e92\u53ef\u80fd\u4f1a\u4f7f\u7a0b\u5e8f\u53d8\u6162\u3002 \u5f02\u6b65\u56de\u8c03\uff1a\u5f02\u6b65\u56de\u8c03\u53ef\u80fd\u4f1a\u5ef6\u8fdf\u7a0b\u5e8f\u7684\u6267\u884c\uff0c\u76f4\u5230\u6536\u5230\u54cd\u5e94\u3002 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