The PC side determines the type of browser currently in use

function getOpera() {var userAgent = navigator.userAgent; //Get the browser's userAgent stringif (userAgent.indexOf("Opera") > -1) {/ / Determine whether the Opera browserreturn "Opera";}if (userAgent.indexOf("Firefox") > -1) {/ / Determine whether the Firefox browserreturn "FF";}if (userAgent.indexOf("Chrome") > -1) {/ / Determine whether the Chrome browserreturn "Chrome";}if (userAgent.indexOf("Safari") > -1) {/ / Determine whether the Safari browserreturn "Safari";}if (userAgent.indexOf("compatible") > -1 &&userAgent.indexOf("MSIE") > -1 &&!isOpera) {/ / Determine whether the IE browserreturn "IE";}},