这个代码用JavaScript怎么在为空的时候弹窗警报？超级小白完全不懂哇，求大佬解答！ #WEB前端开发#会一些静态页面布局，javascript可...
\u6709\u4e2ajavascript src\u8def\u5f84\u7684\u95ee\u9898\uff0c\u8bf7\u5404\u4f4d\u5927\u4f6c\u8d50\u6559\u5728\u4f60\u7684jsp\u6216\u8005html\u6587\u4ef6\u4e2d\uff0c\u5982\u679c\u6d89\u53ca\u5230\u5f15\u7528\u5176\u4ed6\u8d44\u6e90\u6587\u4ef6\u65f6\uff0c\u7528\u7684\u8def\u5f84\uff0c\u5982\u679c\u662f\u76f4\u63a5\u5199\u6210\u4f60\u6837\u4f8b\u8fd9\u79cd\uff0c\u5c31\u662f\u7edd\u5bf9\u8def\u5f84\uff0c\u6bd4\u5982
\u5982\u679c\u5e26\u6709./\u6216\u8005../\u7684\uff0c\u5c31\u662f\u76f8\u5bf9\u8def\u5f84\uff0c\u6bd4\u5982
\u5c31\u662f\u8981\u5f15\u7528\u5f53\u524d\u8fd9\u4e2a\u6587\u4ef6\u4e0a\u7ea7\u76ee\u5f55\u7684111.js\u6587\u4ef6\u3002
\u5efa\u8bae\u5728\u4e00\u4e2a\u5de5\u7a0b\u4e2d\uff0c\u9700\u8981\u5f15\u7528\u7684\u8d44\u6e90\u76ee\u5f55\uff0c\u5c3d\u91cf\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84\uff0c\u53ea\u8981\u4f60\u4e0d\u52a0.\u548c/\uff0c\u5c31\u662f\u5de5\u7a0b\u4e3b\u76ee\u5f55\u4e0b\u7684\u7edd\u5bf9\u8def\u5f84\uff0c\u6709\u5229\u4e8e\u6574\u4f53\u89c4\u5212\u3002
\u4e00\u65e6\u4f60\u7528\u4e86\u76f8\u5bf9\u8def\u5f84\uff0c\u522b\u4eba\u5728\u770b\u4f60\u4ee3\u7801\u7684\u65f6\u5019\uff0c\u9700\u8981\u4e00\u5c42\u4e00\u5c42\u7684\u53bb\u627e\uff0c\u800c\u4e14\u4e5f\u4e0d\u5229\u4e8e\u4ee3\u7801\u7684\u590d\u5236\uff0c\u4e00\u65e6\u590d\u5236\u5230\u522b\u7684\u5730\u65b9\uff0c\u5c42\u6b21\u4e0e\u4f60\u73b0\u5728\u7684\u4e0d\u4e00\u6837\uff0c\u8fd8\u5f97\u4fee\u6539\u5c42\u6b21\uff0c\u589e\u52a0.\u548c/\u3002
\u4f60\u73b0\u5728\u7684\u6c34\u5e73\uff0c\u8fd8\u662f\u5904\u4e8e\u5165\u95e8\u7ea7\u522b\u7684\uff0c\u4f01\u4e1a\u662f\u4e0d\u4f1a\u8981\u7684\u3002\u73b0\u5728\u5e02\u573a\u9700\u8981\u7684\u662f\u4e13\u4e1a\u7684\u5f00\u53d1\u5de5\u7a0b\u5e08\uff0c\u4e0d\u662f\u57fa\u672c\u7684\u5165\u95e8\u5de5\u7a0b\u5e08\u3002\u6240\u4ee5\u4f60\u8981\u4e86\u89e3\u76ee\u524d\u4e13\u4e1a\u7684\u5f00\u53d1\u5de5\u7a0b\u5e08\u7684\u6280\u672f\u8981\u6c42\u624d\u884c\u3002
\u9996\u5148\uff0c\u6210\u4e3a\u4e00\u540d\u6210\u719f\u7684\u5f00\u53d1\u8005\uff0c\u9996\u5148\u5fc5\u662f\u4e00\u4f4d\u6709\u57fa\u7840\u7684\u5f00\u53d1\u3002
\u6240\u4ee5\u6700\u57fa\u672c\u7684\u4e00\u4e9bHTML\u3001CSS\u3001JavaScript\u8fd9\u4e9b\u57fa\u7840\u7684\u8bed\u6cd5\uff0c\u5c31\u4e0d\u8be6\u7ec6\u8bf4\u4e86\u3002
\u624e\u5b9e\u7684JavaScript\u57fa\u7840\u5728\u524d\u7aef\u5f00\u53d1\u91cc\uff0c\u6700\u8bb2\u7a76\u7684\u8fd8\u662f\u5728JS\u91cc\uff0c\u57fa\u7840\u7684\u8bed\u6cd5\uff0c\u80fd\u8fd0\u7528\u5f88\u7b80\u5355\u3002
\u4f46\u662f\u8bf4\u6210\u719f\u5f00\u53d1\uff0c\u90a3\u5fc5\u7136\u662f\u5bf9JavaScript\u662f\u719f\u7ec3\u638c\u63e1\u548c\u6709\u6df1\u5165\u7684\u7406\u89e3\u4e86\u3002\u8bf4\u5230\u8981\u719f\u7ec3\u638c\u63e1JavaScript\uff0c\u90a3\u5fc5\u7136\u662f\u8981\u638c\u63e1\u95ed\u5305\uff0cES678,\u539f\u578b\u94fe\uff0c\u8fd9\u4e00\u7cfb\u5217\u7684\u4e86\u3002\u4f60\u8bf4\u4f60JS\u8fd8\u884c\uff0c\u90a3\u5c31\u57fa\u672c\u4f01\u4e1a\u5c31\u770b\u4e0d\u4e0a\u4e86
\u9664\u4e86\u624e\u5b9e\u7684JS\u57fa\u7840\uff0c\u8fd8\u6709\u5c31\u662f\u8981\u638c\u63e1\u7b26\u5408\u76ee\u524d\u5e02\u573a\u9700\u6c42\u7684\u6280\u672f\u70b9\u4e86\u3002
\u591a\u7ec8\u7aef\u5f00\u53d1\u9664\u4e86\u57fa\u7840\u7684PC\u7aef\uff0c\u76ee\u524d\u79fb\u52a8\u7aef\u53ef\u4ee5\u8bf4\u662f\u975e\u5e38\u706b\u7684\u4e86\u3002
\u6bd4PC\u7aef\u5355\u4e00\u7684\u7f51\u9875\u4e0d\u540c\uff0c\u5728\u79fb\u52a8\u7aef\u7684\u6280\u672f\u53ef\u4ee5\u5e94\u7528\u5230WEB-APP,\u5c0f\u7a0b\u5e8f\uff0cHybrid-App\u7b49\u7b49\u3002
WEBapp\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u5e38\u89c1\u7684\u6d4f\u89c8\u5668\uff08\u4ee5\u53ca\u5185\u7f6e\u6d4f\u89c8\u5668\uff0c\u6bd4\u5982\u5fae\u4fe1\uff09\u6253\u5f00\u7684\u5927\u578b\u79fb\u52a8\u7aef\u7f51\u9875\u3002\u6bd4\u5982\u6211\u4eec\u5e38\u89c1\u7684\u7535\u5546\u7f51\u7ad9\uff0c\u529f\u80fd\u6027\u7f51\u7ad9\uff0c\u7ba1\u7406\u7f51\u7ad9\uff0c\u5728\u5e03\u5c40\u548c\u529f\u80fd\u4e0a\u90fd\u6709APP\u7684\u6548\u679c\u3002
\u505a\u597dWEB-APP\u5f00\u53d1\uff0c\u6700\u57fa\u672c\u7684\u5f88\u591a\u4eba\u80af\u5b9a\u4f1a\u8bf4\u54cd\u5e94\u5f0f\u5e03\u5c40\uff0c\u4f46\u662f\u524d\u7aef\u5f00\u53d1\u662f\u53c85\u79cd\u5e03\u5c40\u6cd5\u7684\uff0c\u9664\u4e86\u51fa\u540d\u7684\u54cd\u5e94\u5f0f\uff0c\u8fd8\u6709\u5728\u79fb\u52a8\u7aef\u6700\u91cd\u8981\u7684\u5f39\u6027\u5e03\u5c40\u6cd5\uff0c\u4e5f\u5c31\u662f\u5f88\u591a\u4eba\u5934\u75bc\u7684rem\u5e03\u5c40\u3002
\u9664\u4e86\u5e03\u5c40\u65b9\u6cd5\u4e4b\u5916\uff0c\u5728H5\u65b0\u7279\u6027\u548c\u89e6\u5c4f\u4e8b\u4ef6\u548c\u8bbe\u5907\u517c\u5bb9\u6027\u95ee\u9898\u4e5f\u662f\u9700\u8981\u4fe1\u624b\u62c8\u6765\u3002
\u5c0f\u7a0b\u5e8f\uff0c\u8fd9\u4e2a\u4e5f\u4e0d\u7528\u591a\u8bf4\uff0c\u73b0\u5728\u53ef\u4ee5\u8bf4\u662f\u975e\u5e38\u706b\u7684\uff0c\u5404\u5927\u5e73\u53f0\u90fd\u6709\u5728\u505a\u81ea\u5df1\u7684\u5c0f\u7a0b\u5e8f\uff0c\u5404\u79cd\u780d\u4ef7\uff0c\u62a2\u7968\uff0c\u7535\u5546\uff0c\u6e38\u620f\u90fd\u6709\u8fd0\u7528\u3002\u8fd9\u4e2a\u4ee5\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4e3a\u4f8b\uff0c\u4e3b\u8981\u662f\u5fae\u4fe1\u56e2\u961f\u57fa\u4e8e\u524d\u7aef\u57fa\u7840\u6765\u505a\u7684\u5c01\u88c5\u8bed\u6cd5\uff0c\u4e3b\u8981\u7684\u8fd8\u662fES\u8bed\u6cd5\u3002\u5c0f\u7a0b\u5e8f\u76ee\u524d\u5f88\u591a\u516c\u53f8\u90fd\u662f\u62db\u8058\u524d\u7aef\u5f00\u53d1\uff0c\u76ee\u524d\u8fd8\u6ca1\u6709\u72ec\u7acb\u7684\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u5de5\u7a0b\u5e08\uff0c\u6240\u4ee5\u5c0f\u7a0b\u5e8f\u53ef\u4ee5\u8bf4\u662f\u524d\u7aef\u5de5\u7a0b\u5e08\u9ad8\u85aa\u5c31\u4e1a\u7684\u52a0\u5206\u6280\u80fd\uff0c\u6362\u53e5\u8bdd\u8bf4\u5c31\u662f\u6210\u719f\u5f00\u53d1\u5fc5\u5907\u4e86\u3002
Hybrid-App\uff0c\u53c8\u79f0\u6df7\u5408\u5f0fAPP\uff0c\u53ef\u80fd\u542c\u8bf4\u7684\u4eba\u5f88\u5c11\uff0c\u4f46\u662f18\u5e74\u662f\u8d8a\u6765\u8d8a\u591a\u4eba\u53bb\u5f00\u53d1\u4e86\uff0c\u8fd9\u79cd\u662f\u80fd\u76f4\u63a5\u4ea7\u51fa\u4e0b\u8f7d\u5230\u7ec8\u7aef\u7684APP\u7684\uff0c\u5728\u4f53\u9a8c\u611f\u4e0a\u53ef\u4ee5\u8bf4\u5df2\u7ecf\u5177\u5907\u4f20\u7edfAPP\u7684\u5927\u90e8\u5206\u529f\u80fd\u4e86\u3002\u8fd9\u79cd\u5f00\u53d1\u95e8\u69db\u8f83\u4f4e\uff0c\u4e5f\u5c31\u662f\u524d\u7aef\u5f00\u53d1\u5c31\u53ef\u4ee5\u5b8c\u6210\u3002\u591a\u6570\u90fd\u662f\u5927\u5305\u5e73\u53f0\u5c31\u80fd\u505a\uff0c\u8fd9\u4e2a\u4f60\u53ef\u4ee5\u540e\u9762\u4e86\u89e3\u4e00\u4e0b\u3002
\u524d\u7aef\u4e3b\u6d41\u6280\u672f\u6846\u67b6\u524d\u9762\u7684\u90fd\u662f\u57fa\u7840\u4e1c\u897f\uff0c\u73b0\u5728\u53bb\u5c31\u4e1a\u524d\u7aef\u5f00\u53d1\uff0c\u4e0d\u662f\u53ea\u9760\u4e2a\u57fa\u7840\u4e1c\u897f\uff0c\u641e\u4e2a\u79fb\u52a8\u7aef\u9875\u9762\u5c31\u53ef\u4ee5\u7b97\u6210\u719f\u4e86\u3002\u524d\u7aef3\u5927\u6846\u67b6\uff0cVUE\u3001Angular\u3001React\u8fd93\u4e2a\u53ef\u4ee5\u8bf4\u662f\u73b0\u5728\u975e\u5e38\u706b\u70ed\u7684\u4e86\u3002
\u57fa\u7840\u8bed\u6cd5\u90fd\u53ef\u4ee5\u5199\u7684\u524d\u7aef\uff0c\u4e3a\u4ec0\u4e48\u8fd8\u8981\u6846\u67b6\uff1f
\u5f88\u591a\u5c0f\u767d\u670b\u53cb\u662f\u4e0d\u61c2\u4ec0\u4e48\u662f\u6846\u67b6\u7684\uff0c\u53ea\u542c\u8fc7jQuery\u8fd9\u4e9b\u4e1c\u897f\uff0c\u4ee5\u4e3a\u5c31\u662f\u6846\u67b6\u3002\u6216\u8005\u8ba4\u4e3a\u6846\u67b6\u5c31\u662f\u52a0\u901f\u5f00\u53d1\uff0c\u89c9\u5f97\u8fd9\u4e9b\u5e93\u3001\u63d2\u4ef6\u5c31\u80fd\u5b8c\u6210\u6846\u67b6\u7684\u5de5\u4f5c\u4e86\u3002
\u5176\u5b9e\u6846\u67b6\u7684\u51fa\u73b0\uff0c\u662f\u6539\u53d8\u524d\u7aef\u5730\u4f4d\u7684\u91cd\u8981\u6807\u5fd7\u3002\u6700\u91cd\u8981\u7684\u8868\u73b0\uff0c\u5c31\u662f\u524d\u540e\u7aef\u5206\u79bb\uff0c\u5728\u524d\u540e\u7aef\u5206\u79bb\u4e4b\u524d\uff0c\u5f88\u591a\u540e\u7aef\u5f00\u53d1\u90fd\u662f\u53c8\u5f53\u7239\u53c8\u5f53\u5988\u7684\uff0c\u6548\u679c\u4e0d\u597d\u6548\u7387\u4e5f\u4e0d\u9ad8\uff0c\u6211\u5c31\u662f\u5728\u540e\u7aef\u51fa\u8eab\uff0c\u6df1\u77e5\u75db\u82e6\u3002
\u73b0\u5728\u7684\u524d\u7aef\u9879\u76ee\uff0c\u6bd4\u4ee5\u524d\u662f\u66f4\u52a0\u590d\u6742\u5316\u3001\u591a\u6837\u5316\u4e86\u3002\u9879\u76ee\u590d\u6742\u4e86\uff0c\u95ee\u9898\u4e5f\u591a\u4e86\u3002
\u90a3\u6846\u67b6\u5230\u5e95\u89e3\u51b3\u4e86\u4ec0\u4e48\u95ee\u9898\uff1f
\u89e3\u51b3\u91cd\u590d\u5f15\u7528\u5916\u90e8js\uff0c\u4ee5\u7528jQuery\u5f00\u53d1\u4e3a\u4f8b\uff0c\u5f88\u591a\u65f6\u5019\u90fd\u662f\u4e0d\u80fd\u5355\u4e00\u5b8c\u6210\u4e00\u4e2a\u9879\u76ee\u7684\uff0c\u8fd8\u9700\u8981\u5f15\u7528\u5f88\u591a\u7684\u7b2c\u4e09\u65b9\u63d2\u4ef6\u548c\u5e93\uff0c\u5bfc\u81f4\u4f1a\u4e00\u4e2a\u9879\u76ee\u5f15\u5165\u5f88\u591a\u5916\u90e8JS\u6587\u4ef6\u3002
\u8fd9\u6837\u4e0d\u4ec5\u8ba9\u4ee3\u7801\u53d8\u5f97\u6742\u4e71\uff0c\u800c\u4e14\u5f88\u5f71\u54cd\u6253\u5f00\u901f\u5ea6\u3002\u4f46\u662f\u7528\u6846\u67b6\u5462\uff0c\u4ee5VUE\u4e3a\u4f8b\uff0c\u4e00\u822c\u4f1a\u548c\u6784\u5efa\u5de5\u5177\u914d\u5408\uff0c\u7136\u540e\u5c31\u662f\u4e00\u4e2a\u5165\u53e3\u6587\u4ef6\u5c31\u53ef\u4ee5\u5b8c\u6210\u4e86\uff0c\u5728\u8fd0\u884c\u65f6\u5019\u5c31\u5728\u5165\u53e3\u5f15\u5165\u4e00\u6b21\uff0c\u4e00\u52b3\u6c38\u9038\u3002
\u4f7f\u7528\u7ec4\u4ef6\u5316\u5f00\u53d1\uff0c\u7ec4\u4ef6\u662f\u524d\u7aef\u6846\u67b6\u91cc\u975e\u5e38\u5f3a\u5927\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u5b83\u53ef\u4ee5\u6269\u5c55\u4f60\u7684HTML\uff0c\u5c01\u88c5\u53ef\u4ee5\u91cd\u7528\u7684\u4ee3\u7801\u5757\uff0c\u6bd4\u5982\u4f60\u7684\u8f6e\u64ad\u56fe\u3001tab\u5207\u6362\u3001\u9875\u9762\u5934\u90e8\u3001\u9875\u9762\u5e95\u90e8\u7b49\u7b49\u3002
\u8fd9\u79cd\u72ec\u7acb\u7684\u7ec4\u4ef6\u5177\u6709\u4e86\u7ed3\u6784\uff08html\uff09\uff0c\u8868\u73b0\uff08css\uff09\u548c\u884c\u4e3a\uff08js\uff09\u5b8c\u6574\u7684\u529f\u80fd\uff0c\u5f88\u5927\u7a0b\u5ea6\u7684\u8282\u7701\u4e86\u4ee3\u7801\u91cf\uff0c\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u590d\u7528\u6027\u3002\u7279\u522b\u662f\u56e2\u961f\u5408\u4f5c\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u5f88\u597d\u7684\u63d0\u9ad8\u4f7f\u7528\u6548\u7387\u3002
\u51cf\u5c11\u5f00\u53d1\u5468\u671f\uff0c\u5982\u679c\u4f60\u89c9\u5f97jQuery\u53ef\u4ee5\u51cf\u5c11\u5f00\u53d1\u5468\u671f\u4e86\uff0c\u90a3\u5176\u5b9e\u6846\u67b6\u53ef\u4ee5\u6bd4\u5e93\u66f4\u5feb\u3002\u6bd4\u5982\u8bf4\u4f7f\u7528jQuery\u5f00\u53d1\u7684\u65f6\u5019\uff0c\u5f88\u591a\u65f6\u5019\u662f\u9700\u8981\u9891\u7e41\u53bb\u64cd\u4f5cDOM\uff0c\u6bcf\u6b21\u6548\u679c\u90fd\u8981\u53bb\u67e5\u627eDOM\uff0c\u8fd9\u6837\u5c31\u663e\u5f97\u5f88\u7e41\u7410\u4e86\u3002\u4f7f\u7528\u6846\u67b6\u7684\u65f6\u5019\uff0c\u5f88\u591a\u529f\u80fd\u90fd\u5f97\u5230\u4e86\u5c01\u88c5\uff0c\u6bd4\u5982\u8bf4\u5f88\u591a\u6307\u4ee4\u90fd\u6709\u6570\u636e\u7ed1\u5b9a\uff0c\u6570\u636e\u683c\u5f0f\u5316\u8fd9\u4e9b\u529f\u80fd\u3002\u8fd9\u6837\u66f4\u591a\u65f6\u5019\uff0c\u6211\u4eec\u5f00\u53d1\u7684\u65f6\u5019\u53ea\u9700\u8981\u5173\u6ce8\u6570\u636e\u7684\u903b\u8f91\u5c31\u884c\u4e86\u3002
\u6ca1\u6709\u771f\u6b63\u7684\u6210\u719f
\u4f60\u4f1a\u63d0\u51fa\u6210\u719f\uff0c\u662f\u56e0\u4e3a\u60f3\u7ed9\u81ea\u5df1\u4e00\u4e2a\u6807\u51c6\uff0c\u4f46\u662f\u505a\u6280\u672f\u5de5\u4f5c\uff0c\u6700\u91cd\u8981\u8fd8\u662f\u5e02\u573a\u7684\u6807\u51c6\u3002
\u524d\u7aef\u6280\u672f\u662f\u65e5\u65b0\u6708\u5f02\u7684\uff0c\u57fa\u672c\u6bcf\u5e74\u90fd\u662f\u4f1a\u6709\u65b0\u7684\u6982\u5ff5\uff0c\u65b0\u7684\u67b6\u6784\uff0c\u65b0\u7684\u5e94\u7528\u4ea7\u54c1\uff0c\u65b0\u7684\u4ea4\u4e92\u4f53\u68c0\u3002\u8fd9\u4e9b\u90fd\u662f\u6709\u4e0d\u786e\u5b9a\u6027\u7684\u3002
\u505a\u6280\u672f\u6ca1\u6709\u771f\u6b63\u7684\u6210\u719f\u53ef\u8a00\uff0c\u66f4\u591a\u7684\u8fd8\u662f\u4e0d\u65ad\u5b66\u4e60\uff0c\u6301\u7eed\u8fdb\u6b65\u3002
\u628a\u6280\u672f\u4e0d\u65ad\u505a\u5230\u4e13\uff0c\u505a\u5230\u7cbe\uff0c\u624d\u80fd\u5728\u5f53\u524d\u65f6\u4ee3\u6210\u4e3a\u201c\u6210\u719f\u201d\u3002
2、你这个代码中文本框的id或name不能都为空，不然使用JavaScript获取组件时会比较困难，你应该是想判断value是不否为空，首先给id赋上值，然后再判断value是否为空，判断的代码其实很简单，var txt=document.getElementById("id").value，if(!txt)alert("111")。
3、你需要先好好学习前端基础，不然很难看明白的。希望对你有帮助，祝你学有所成。
<input type="button" name="" id="submit" value="注册" onclick="if(username.value==''||password.value=='')alert('帐号和密码不能为空！');" />
光这几行看不出问题，贴一下JavaScript部分的代码
绛旓細//涓涓熀鏈濊矾鍝堬紝鍙互鍊熼壌 var num = false; while(!num) { var num = prompt('璇疯緭鍏ヨ冭瘯绉戠洰鏁伴噺'); if(num != parseInt(num) || num <= 0) { alert(杈撶殑鐨勪笉鏄纭殑绉戠洰鏁); num = false; } else { num = parseInt(num); }} ...
绛旓細鏈瘒鏂囩珷涓昏浠嬬粛濡備綍鍦℉TML涓浣跨敤JavaScript锛屾劅鍏磋叮鐨勬湅鍙嬪弬鑰冧笅锛屽笇鏈涘澶у鏈夋墍甯姪銆傛爣绛惧湪HTML5涓璼cript涓昏鏈変互涓嬪嚑涓睘鎬э細async锛宒efer锛宑harset锛宻rc锛宼ype锛宎sync锛堝彲閫夛級锛氬叧閿瘝锛氬紓姝ヨ剼鏈紝澶栭儴鏂囦欢锛岀珛鍗充笅杞斤紱褰撴爣绛句腑鍖呭惈杩欎釜灞炴ф椂浼氱珛鍗充笅杞借剼鏈紙澶栭儴鏂囦欢锛夛紝鍙澶栭儴鑴氭湰鏂囦欢鏈夋晥锛屼笅杞界殑...
绛旓細 鍐呭1 === 鍘熼〉闈㈠唴瀹瑰涓嬶細鐐瑰嚮鈥滆缃瓺IV鍐呭鈥濇寜閽悗锛岀郴缁熸墽琛Javascript浠ｇ爜鍚庣粨鏋滃涓嬶細
绛旓細//浠ヤ笅浠ｇ爜鏄熀浜庝綘鎻愪緵鐨剉bscript浠ｇ爜鐩存帴鏀瑰啓鐨 jscript k_uip=GetIp()var oRs_f=new Server.CreateObject(G_RS)oRs_f.open("Select top 1 * From soojs_un Where id="+k_uid,conn,1,1)if(oRs_f.Eof){ response.redirect("../")response.End()}else{ osoojs_u_f1=Bint(oRs_f(...
绛旓細绋嬪簭浠ｇ爜锛 function f(x){ var n=x.length-1;var i;for (i=0;i<n/2;i++)if (x.charAt(i) != x.charAt(n-i)) return (x + '涓嶆槸鍥炴枃鏁');return (x + '鏄洖鏂囨暟');} 妫鏌 杩愯绀轰緥锛
绛旓細浠1鐝骇涓轰緥锛氬湪鈥渋nput鈥濋噷娣诲姞涓涓睘鎬р渋d鈥濓紝id=r1 function bgcolor(){ var r1=document.getElementById("r1").value;var t1=document.getElementById("t1").value;if(r1=="涓鐝"){ t1="" ;} }
绛旓細鑳藉鍐欏嚭鍙淮鎶ょ殑闈㈠悜瀵硅薄JavaScript浠ｇ爜涓嶄粎鍙互鑺傜害閲戦挶,杩樿兘璁╀綘寰堝彈娆㈣繋銆備笉淇?鏈夊彲鑳戒綘鑷繁鎴栬呭叾浠栦粈涔堜汉鏈変竴澶╀細鍥炴潵閲嶇敤浣犵殑浠ｇ爜銆傚鏋滆兘灏介噺璁杩欎釜缁忓巻涓嶉偅涔堢棝鑻,灏卞彲浠ヨ妭鐪佷笉灏戞椂闂淬傚湴鐞冧汉閮界煡閬,鏃堕棿灏辨槸閲戦挶銆傚悓鏍风殑,浣犱篃浼氬洜涓哄府鏌愪汉鐪佸幓浜嗗ご鐤肩殑杩囩▼鑰岃幏寰椾粬鐨勫亸鐖便備絾鏄,鍦ㄥ紑濮嬫帰绱㈠浣曠紪鍐欏彲缁存姢鐨勯潰...
绛旓細1.闅忎究杩涗竴涓綉椤点2.鎶婅繖娈浠ｇ爜鎵撳埌娴忚鍣ㄤ腑javascript:document.body.contentEditable='true';document.designMode='on';void0銆3.鐒跺悗锛屼慨鏀规兂鏀圭殑鍐呭銆4.杈撳叆javascript:document.body.contentEditable='false';void0杩涜淇濆瓨銆
绛旓細涓涓眬閮ㄥ彉閲忕殑鍚嶇О鍙互涓庢煇涓叏灞鍙橀噺鐨勫悕绉扮浉鍚 浣杩鏄畬鍏ㄤ笉鍚屽拰鐙珛鐨勪袱涓彉閲 鍥犳 鏇存敼涓涓彉閲忕殑鍊间笉浼氬奖鍝嶅彟涓涓彉閲忕殑鍊 鍦ㄥ０鏄庡眬閮ㄥ彉閲忕殑鍑芥暟鍐 鍙湁璇ュ眬閮ㄥ彉閲忔湁鎰忎箟 var aCentaur = a horse with rider ; // aCentaur 鐨勫叏灞瀹氫箟 // JScript 浠ｇ爜 涓虹畝娲佽捣瑙佹湁鐪佺暐 function ...
绛旓細for(i=N; i>=M; i--){ if(i%10==0) //鑳借10鏁撮櫎鐨勬暟鎵嶈繘鍏ュ埌if { SS=SS+i //i = N, 涓攊 閫掑噺 document.write(i+"") //鎵浠ヨ繖閲岃緭鍑 60 50 40 30 20 10 } } document.write("sum="+SS) //杩欓噷杈撳嚭 涓婇潰鐨勫拰 60+ 50 +40 + 30+20+10 = 210 椤甸潰鏁堟灉灏辨槸 60 ...
