Javascript to identify different browsers Based on userAgent-javascript skills

This section describes how to identify different browsers in js Based on userAgent. If you need it, you can refer to the browser detection module. Note that the browser judgment sequence is mainly based on userAgent.

// Check the browser var client = function () {var engine = {ie: 0, gecko: 0, webkit: 0, khtml: 0, opera: 0, ver: null }; var browser = {// viewer ie: 0, firefox: 0, safari: 0, konq: 0, opera: 0, chrome: 0, ver: null}; var ua = navigator. userAgent; // the browser checks if (window. opera) {// opera disguise, so the engine is checked first. ver = browser. ver = window. opera. version (); engine. opera = browser. opera = parseFloat (engine. ver);} else if (/AppleWebKit \/(\ S + )/. test (ua) {engine. ver = RegExp ["$1"]; engine. webkit = parseFloat (engine. ver); // determine whether it is Chrome or Safariif (/Chrome \/(\ S + )/. test (ua) {browser. ver = RegExp ["$1"]; browser. chrome = parseFloat (browser. ver);} else if (/Version \/(\ S + )/. test (ua) {browser. ver = RegExp ["$1"]; browser. safari = parseFloat (browser. ver);} else {// approximately determines the version number var safariVersion = 1; if (engine. webkit <100) {safariVersion = 1;} else if (engine. webkit <312) {safariVersion = 1.2;} else if (engine. webkit <412) {safariVersion = 1.3;} else {safariVersion = 2;} browser. safari = browser. ver = safariVersion;} else if (/KHTML \/(\ S + )/. test (ua) |/Konqueror \/([^;] + )/. test (ua) {engine. ver = browser. ver = RegExp ["$1"]; engine. khtml = browser. konq = parseFloat (engine. ver);} else if (/rv :( [^ \)] +) \) Gecko \/\ d {8 }/. test (ua) {engine. ver = RegExp ["$1"]; engine. gecko = parseFloat (engine. ver); // determine if it is Firefoxif (/Firefox \/(\ S + )/. test (ua) {browser. ver = RegExp ["$1"]; browser. firefox = parseFloat (browser. ver) ;}} else if (/MSIE ([^;] + )/. test (ua) {engine. ver = browser. ver = RegExp ["$1"]; engine. ie = browser. ie = parseFloat (engine. ver);} return {engine: engine, browser: browser };} (); // call if (client. engine. webkit) {// if it's WebKit if (client. browser. chrome) {// execute code for Chrome} else if (client. browser. safari) {// run the code for Safari} else if (client. engine. gecko) {if (client. browser. firefox) {// execute code for Firefox} else {// execute code for other Gecko browsers }}