{"id":2101,"date":"2020-08-11T19:52:00","date_gmt":"2020-08-11T11:52:00","guid":{"rendered":"http:\/\/www.imzouyang.com\/blog\/?p=2101"},"modified":"2020-10-28T22:46:47","modified_gmt":"2020-10-28T14:46:47","slug":"js%e5%8e%9f%e7%90%86%ef%bc%9a%e4%ba%8b%e4%bb%b6%e5%a7%94%e6%89%98","status":"publish","type":"post","link":"http:\/\/www.imzouyang.com\/blog\/archives\/2101.html","title":{"rendered":"js\u539f\u7406\uff1a\u4e8b\u4ef6\u59d4\u6258"},"content":{"rendered":"\n<p><strong>\u4e00\u3001\u573a\u666f<\/strong><\/p>\n\n\n\n<p>\u5047\u5982\u6709\u4e00\u4e2a\u5217\u8868ul\uff0c\u91cc\u9762\u6709\u4e00\u5927\u5806 li\uff0c\u6211\u4eec\u9700\u8981\u7ed9 \u6240\u6709\u7684 li \u90fd\u52a0\u4e0a \u67d0\u67d0\u4e8b\u4ef6\u3002\u5982\u679c\u6211\u4eec\u5bf9\u6bcf\u4e2a li \u8fdb\u884c\u4e8b\u4ef6\u7684\u7ed1\u5b9a\uff0c\u5047\u5982\u67091000\u4e2ali\uff0c\u90a3\u4e48\u6211\u4eec\u8981\u7ed1\u5b9a1000\u4e2a\u4e8b\u4ef6\u3002<br>\u5047\u5982\u6709\u4e00\u4e2a\u52a8\u6001\u52a0\u8f7ddom\u5143\u7d20\u5230html\u5185\uff0c\u4f60\u8981\u7ed9\u52a8\u6001\u52a0\u8f7d\u7684\u8fd9\u4e9b\u5143\u7d20\u7ed1\u5b9a\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<p><strong>\u4e8c\u3001\u4e8b\u4ef6\u59d4\u6258\u767b\u573a<\/strong><\/p>\n\n\n\n<p>\u6b64\u65f6\uff0c\u5c31\u662f \u4e8b\u4ef6\u59d4\u6258 \u767b\u573a\u4e86\uff1a\u6211\u4eec\u53ef\u4ee5\u628a\u6240\u6709 li \u7684\u4e8b\u4ef6\u90fd\u59d4\u6258\u7ed9\u5b83\u7684 \u7236\u7ea7 ul \uff0c\u6211\u4eec\u7ed9 ul \u7ed1\u5b9a\u4e8b\u4ef6\uff0c\u8fd9\u6837\u5c31\u53ea\u8981\u7ed1\u5b9a\u4e00\u4e2a\u4e8b\u4ef6\u3002\u6240\u6709 li \u7684\u70b9\u51fb\u4e8b\u4ef6\u5c31\u4f1a\u5192\u6ce1\u5230 ul \u4e0a\uff0c\u4ece\u800c\u6267\u884c\u5230\u7ed1\u5b9a\u7684\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<p><strong>\u4e09\u3001\u9700\u8981\u9884\u5907\u7684\u77e5\u8bc6<\/strong><\/p>\n\n\n\n<p><strong>1\u3001<\/strong>\u4e8b\u4ef6\u5192\u6ce1<br>\u5b50\u5143\u7d20\uff08li\uff09\u7684\u4e8b\u4ef6\u9700\u8981\u4f20\u9012\u7ed9\u7236\u5143\u7d20\uff08ul\uff09\uff0c\u5c31\u6d89\u53ca\uff1a\u4e8b\u4ef6\u5192\u6ce1 \u539f\u7406\uff0c\u8fd9\u4e2a\u5f97\u61c2\uff1b\u4e8b\u4ef6\u5192\u6ce1\u672c\u6587\u4e0d\u8bb2\uff0c\u8fd9\u91cc\u53ea\u63d0\u4e00\u4e0b\u6bd4\u8f83\u5c11\u9047\u5230\u7684 \u4e8b\u4ef6\u6e90 \u7684\u4e3b\u610f\u4e8b\u9879\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u4e8b\u4ef6\u6e90\u6709\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u5728IE\u4e0b\u83b7\u53d6\u4e8b\u4ef6\u6e90\u4f7f\u7528\uff1a\u4e8b\u4ef6\u5bf9\u8c61.srcElement<br>\u6807\u51c6\u6d4f\u89c8\u5668\u4e0b\u83b7\u53d6\u4e8b\u4ef6\u6e90\u4f7f\u7528\uff1a\u4e8b\u4ef6\u5bf9\u8c61.target<\/p><\/blockquote>\n\n\n\n<p><strong>2\u3001<\/strong>\u4e8b\u4ef6\u6e90<br>\u7236\u5143\u7d20\uff08ul\uff09\u53c8\u8981\u80fd\u5728\u4e8b\u4ef6\u5185\u9488\u5bf9\u5404\u4e2a\u5b50\u5143\u7d20\uff08li\uff09\u8fdb\u884c\u64cd\u4f5c\uff0c\u5c31\u6d89\u53ca\uff1aevent\u5bf9\u8c61\u7684\u4e8b\u4ef6\u6e90\uff0c\u5373 \u4e0d\u7ba1\u5728\u54ea\u4e2a\u4e8b\u4ef6\u4e2d\uff0c\u53ea\u8981\u4f60\u64cd\u4f5c\u7684\u90a3\u4e2a\u5143\u7d20\u5c31\u662f\u4e8b\u4ef6\u6e90\uff08\u89e6\u53d1\u8be5\u4e8b\u4ef6\u7684\u5bf9\u8c61\uff09\u3002<\/p>\n\n\n\n<p><strong>\u56db\u3001\u793a\u4f8b<\/strong><\/p>\n\n\n\n<p><strong>\u4e3e\u4f8b1\uff1a<\/strong>\u9f20\u6807\u79fb\u5165\u6bcf\u4e2a li \u4f1a\u89e6\u53d1\u4e00\u4e2a\u9f20\u6807\u79fb\u5165\u4e8b\u4ef6\uff0c\u8be5\u4e8b\u4ef6\u4f1a\u5192\u6ce1\u5230 ul \u4e0a\uff0cul \u4e0a\u7ed1\u5b9a\u7684\u4e8b\u4ef6\u91cc\uff0c\u901a\u8fc7\u4e8b\u4ef6\u6e90\uff0c\u5c31\u90fd\u80fd\u83b7\u53d6\u5230\u5404 li \u7684 innerHTML\uff0c\u6bcf\u4e2ali\u7684\u4e8b\u4ef6\u662f\u59d4\u6258\u7ed1\u5b9a\u5230\u4e86 ul \u4e0a\u7684\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"642\" height=\"195\" src=\"http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/clipboard-1.png\" alt=\"\" class=\"wp-image-2102\" srcset=\"http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/clipboard-1.png 642w, http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/clipboard-1-300x91.png 300w\" sizes=\"(max-width: 642px) 100vw, 642px\" \/><\/figure>\n\n\n\n<p>\u65e2\u7136\u90fd\u62ff\u5230\u4e86\u6bcf\u4e2ali\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u641e\u5f88\u591a\u4e8b\u4e86\uff1a\uff09\uff0c<br>\u6bd4\u5982\uff0c\u8fd8\u53ef\u4ee5\u5f39\u51fa\u6807\u7b7e\u540d\uff08\u4e0d\u542b\u62ec\u53f7\uff09\uff0c\u4f7f\u7528 nodeName\uff0calert( target.nodeName ); 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