//判断浏览器版本是否过低 var ua = navigator.userAgent.toLowerCase(); if (window.ActiveXObject) var IEversion = ua.match(/msie ([\d.]+)/)[1]; if (IEversion < 8) location.href = "/static/kill-ie.html"; 浏览器版本低于8以下就跳到kill-ie.html
mysql中判断字段为null或者不为null 在mysql中,查询某字段为空时,切记不可用 = null, 而是 is null,不为空则是 is not null select nulcolumn from table; if nuncolumn is null then select 1; else select 2; end if; 执行存储过程 调用过程:call sp_add (1,2,@a);select @a;