\u503c \u524d\u540e \u6bd4\u8f83 input \u65b0\u503c \u65e7\u503c \u65b0\u503c \u76d1\u542c<\/p>\n
\u6548\u679c\u5c31\u662f\u5f53\u4e00\u4e2a\u53d8\u91cf\u53d1\u751f\u53d8\u5316\u65f6\u5019\uff0c\u6211\u4eec\u4e0d\u4ec5\u8981\u83b7\u53d6\u5f53\u524d\u6700\u65b0\u7684\u503c\uff0c\u540c\u65f6\u4e5f\u8981\u83b7\u53d6\u5230\u503c\u53d1\u751f\u53d8\u5316\u65f6\u5019\u7684\u4e0a\u4e00\u6b21\u8bb0\u5f55\u3002\u7c7b\u4f3c\u4e8e\u7f13\u5b58\u3002<\/p>\n
\u4e00\u822c\u7684\u4f5c\u7528\u4e5f\u662f\u7528\u4e8e\u65b0\u503c\u548c\u65e7\u503c\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n
<\/p>\n
input<\/p>\n
$(function(){\r\n $.data($('.tx')[0],'old',$('.tx').val()); \/\/\u9ed8\u8ba4\u4e3a\u4e86\u4e00\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u4e34\u65f6\u53d8\u91cf\u5e76\u83b7\u53d6\u5f53\u524d\u503c\r\n $('.tx').bind('input propertychange', function() { \r\n var old= $.data($('.tx')[0],'old'); \/\/\u83b7\u53d6\u4e34\u65f6\u7684\u503c\r\n var newvalue=$(this).val(); \/\/\u83b7\u53d6\u5230\u5f53\u524d\u503c\r\n if(old !== newvalue){ \/\/\u5f53\u524d\u503c\u548c\u4e34\u65f6\u503c\u4e0d\u4e00\u6837\u65f6\r\n $.data($('.tx')[0],'old',$(this).val()); \/\/\u5c06\u5f53\u524d\u503c\u8d4b\u503c\u7ed9\u4e34\u65f6\u503c\uff0c\u8ba9\u4e34\u65f6\u503c\u6210\u4e3a\u6700\u65b0\u7684\uff0c\u5982\u679c\u503c\u8fd8\u662f\u4e00\u6837\u65f6\u4ec0\u4e48\u90fd\u4e0d\u53d8\r\n }\r\n console.log(old); \/\/\u5982\u679c\u4e34\u65f6\u503c\u53d8\u5316\u4e86\uff0c\u867d\u7136old\u83b7\u53d6\u5230\u7684\u662f\u4e34\u65f6\u503c\uff0c\u4f46old\u8fd8\u662f\u4fdd\u6301\u4e0a\u4e00\u4e2a\u503c\u4e0d\u53d8\uff0c\u56e0\u4e3a\u662f\u4f20\u9012\u8d4b\u503c\u4fdd\u6301\u7740\u72ec\u7acb\u6027\r\n console.log(newvalue);\r\n });\r\n });<\/pre>\n <\/p>\n
\u00a0<input type=\"text\" class=\"tx\"><\/pre>\n <\/p>\n
<\/p>\n
click<\/p>\n
var old_value=1; \/\/\u521d\u59cb\u503c\u8bbe\u7f6e\r\n\r\n$('a').click(function(){\r\n var old= old_value; \/\/\u5c06\u521d\u59cb\u503c\u8d4b\u503c\u7ed9\u4e34\u65f6\u503c\r\n var newvalue=$(this).index(); \/\/\u83b7\u53d6\u5230\u5f53\u524d\u503c\r\n if(old !== newvalue){ \/\/\u5f53\u524d\u503c\u548c\u4e34\u65f6\u503c\u4e0d\u4e00\u6837\u65f6\r\n old_value=$(this).index(); \/\/\u5c06\u5f53\u524d\u503c\u8d4b\u503c\u7ed9\u4e34\u65f6\u503c\uff0c\u8ba9\u4e34\u65f6\u503c\u6210\u4e3a\u6700\u65b0\u7684\uff0c\u5982\u679c\u503c\u8fd8\u662f\u4e00\u6837\u65f6\u4ec0\u4e48\u90fd\u4e0d\u53d8\r\n }\r\n});\r\n\r\n<\/pre>\n <\/p>\n
<\/p>\n