判断浏览器及版本
//"webkit":safari或chrome //"opera":Opera //"mozilla":Firefox或者其他gecko内核的浏览其 //"msie":IE var browser=(function(){var s=navigator.userAgent.toLowerCase();var match=/(webkit)[/]([w.]+)/.exec(s)||/(opera)(?:.*version)?[ /]([w.]+)/.exec(s)||/(msie)([w.]+)/.exec(s)||!/compatible/.test(s)&&/(mozilla)(?:.*? rv:([w.]+))?/.exec(s)||[];return {name:match[1]||"",version:match[2]||"0"}; }());//document.getElementById("test").innerHTML=JSON.stringify(browser);