我希望检测用户是否在使用IE和Firefox浏览器，但我找不到相应的脚本。
我的代码如下：
$(document).ready(function(e) {
$.browser.chrome = /chrom(e|ium)/.test(navigator.userAgent.toLowerCase());
if($.browser.chrome){
alert(1);
//this work well
}
else if(//the browser is IE){alert(2);}
else if(//the browser is Firefox){alert(3);}
//The problem is that I don't know how to write a script for IE and FireFox browser for chrome is work fine
)};
最佳解决方案可能是：使用Modernizr。
但是，如果您必须要使用$.browser属性，您可以使用jQuery Migrate插件（适用于JQuery >= 1.9 - 在早期版本中您可以直接使用它），然后执行以下操作：
if($.browser.chrome) {
alert(1);
} else if ($.browser.mozilla) {
alert(2);
} else if ($.browser.msie) {
alert(3);
}
如果出于某种原因需要使用navigator.userAgent，则应为：
$.browser.msie = /msie/.test(navigator.userAgent.toLowerCase());
$.browser.mozilla = /firefox/.test(navigator.userAgent.toLowerCase());
我对于 ie 浏览器的检测解决方案：
if (navigator.userAgent.match(/msie/i) || navigator.userAgent.match(/trident/i) ){
$("html").addClass("ie");
}
需要 Jquery。
您可以使用此代码查找正确的浏览器，并对任何目标浏览器进行更改......
function myFunction() {
if((navigator.userAgent.indexOf("Opera") || navigator.userAgent.indexOf('OPR')) != -1 ){
alert('Opera');
}
else if(navigator.userAgent.indexOf("Chrome") != -1 ){
alert('Chrome');
}
else if(navigator.userAgent.indexOf("Safari") != -1){
alert('Safari');
}
else if(navigator.userAgent.indexOf("Firefox") != -1 ){
alert('Firefox');
}
else if((navigator.userAgent.indexOf("MSIE") != -1 ) || (!!document.documentMode == true )){
alert('IE');
}
else{
alert('unknown');
}
}<!DOCTYPE html>
<html>
<head>
<title>Browser detector</title>
</head>
<body onload="myFunction()">
// your code here
</body>
</html>当你运行Modernizr时，它会更新你的HEAD元素的class属性，以列出你正在使用的浏览器的各种特性——然后你可以使用Javascript查询属性并决定如果一个特性存在（或不存在）要做什么。
(function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(['jquery'], function ($) {
return factory($);
});
} else if (typeof module === 'object' && typeof module.exports === 'object') {
// Node-like environment
module.exports = factory(require('jquery'));
} else {
// Browser globals
factory(window.jQuery);
}
}(function(jQuery) {
"use strict";
function uaMatch( ua ) {
// If an UA is not provided, default to the current browser UA.
if ( ua === undefined ) {
ua = window.navigator.userAgent;
}
ua = ua.toLowerCase();
var match = /(edge)\/([\w.]+)/.exec( ua ) ||
/(opr)[\/]([\w.]+)/.exec( ua ) ||
/(chrome)[ \/]([\w.]+)/.exec( ua ) ||
/(version)(applewebkit)[ \/]([\w.]+).*(safari)[ \/]([\w.]+)/.exec( ua ) ||
/(webkit)[ \/]([\w.]+).*(version)[ \/]([\w.]+).*(safari)[ \/]([\w.]+)/.exec( ua ) ||
/(webkit)[ \/]([\w.]+)/.exec( ua ) ||
/(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
/(msie) ([\w.]+)/.exec( ua ) ||
ua.indexOf("trident") >= 0 && /(rv)(?::| )([\w.]+)/.exec( ua ) ||
ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
[];
var platform_match = /(ipad)/.exec( ua ) ||
/(ipod)/.exec( ua ) ||
/(iphone)/.exec( ua ) ||
/(kindle)/.exec( ua ) ||
/(silk)/.exec( ua ) ||
/(android)/.exec( ua ) ||
/(windows phone)/.exec( ua ) ||
/(win)/.exec( ua ) ||
/(mac)/.exec( ua ) ||
/(linux)/.exec( ua ) ||
/(cros)/.exec( ua ) ||
/(playbook)/.exec( ua ) ||
/(bb)/.exec( ua ) ||
/(blackberry)/.exec( ua ) ||
[];
var browser = {},
matched = {
browser: match[ 5 ] || match[ 3 ] || match[ 1 ] || "",
version: match[ 2 ] || match[ 4 ] || "0",
versionNumber: match[ 4 ] || match[ 2 ] || "0",
platform: platform_match[ 0 ] || ""
};
if ( matched.browser ) {
browser[ matched.browser ] = true;
browser.version = matched.version;
browser.versionNumber = parseInt(matched.versionNumber, 10);
}
if ( matched.platform ) {
browser[ matched.platform ] = true;
}
// These are all considered mobile platforms, meaning they run a mobile browser
if ( browser.android || browser.bb || browser.blackberry || browser.ipad || browser.iphone ||
browser.ipod || browser.kindle || browser.playbook || browser.silk || browser[ "windows phone" ]) {
browser.mobile = true;
}
// These are all considered desktop platforms, meaning they run a desktop browser
if ( browser.cros || browser.mac || browser.linux || browser.win ) {
browser.desktop = true;
}
// Chrome, Opera 15+ and Safari are webkit based browsers
if ( browser.chrome || browser.opr || browser.safari ) {
browser.webkit = true;
}
// IE11 has a new token so we will assign it msie to avoid breaking changes
// IE12 disguises itself as Chrome, but adds a new Edge token.
if ( browser.rv || browser.edge ) {
var ie = "msie";
matched.browser = ie;
browser[ie] = true;
}
// Blackberry browsers are marked as Safari on BlackBerry
if ( browser.safari && browser.blackberry ) {
var blackberry = "blackberry";
matched.browser = blackberry;
browser[blackberry] = true;
}
// Playbook browsers are marked as Safari on Playbook
if ( browser.safari && browser.playbook ) {
var playbook = "playbook";
matched.browser = playbook;
browser[playbook] = true;
}
// BB10 is a newer OS version of BlackBerry
if ( browser.bb ) {
var bb = "blackberry";
matched.browser = bb;
browser[bb] = true;
}
// Opera 15+ are identified as opr
if ( browser.opr ) {
var opera = "opera";
matched.browser = opera;
browser[opera] = true;
}
// Stock Android browsers are marked as Safari on Android.
if ( browser.safari && browser.android ) {
var android = "android";
matched.browser = android;
browser[android] = true;
}
// Kindle browsers are marked as Safari on Kindle
if ( browser.safari && browser.kindle ) {
var kindle = "kindle";
matched.browser = kindle;
browser[kindle] = true;
}
// Kindle Silk browsers are marked as Safari on Kindle
if ( browser.safari && browser.silk ) {
var silk = "silk";
matched.browser = silk;
browser[silk] = true;
}
// Assign the name and platform variable
browser.name = matched.browser;
browser.platform = matched.platform;
return browser;
}
// Run the matching process, also assign the function to the returned object
// for manual, jQuery-free use if desired
window.jQBrowser = uaMatch( window.navigator.userAgent );
window.jQBrowser.uaMatch = uaMatch;
// Only assign to jQuery.browser if jQuery is loaded
if ( jQuery ) {
jQuery.browser = window.jQBrowser;
}
return window.jQBrowser;
}));
尝试使用它
$(document).ready(function() {
// If the browser type if Mozilla Firefox
if ($.browser.mozilla && $.browser.version >= "1.8" ){
// some code
}
// If the browser type is Opera
if( $.browser.opera)
{
// some code
}
// If the web browser type is Safari
if( $.browser.safari )
{
// some code
}
// If the web browser type is Chrome
if( $.browser.chrome)
{
// some code
}
// If the web browser type is Internet Explorer
if ($.browser.msie && $.browser.version <= 6 )
{
// some code
}
//If the web browser type is Internet Explorer 6 and above
if ($.browser.msie && $.browser.version > 6)
{
// some code
}
});
$.browser.chrome = /chrom(e|ium)/.test(navigator.userAgent.toLowerCase());
if($.browser.chrome){
alert(1);
}
更新：（感谢 @Mr. Bacciagalupe）
jQuery 已经在最新版本中删除了 $.browser，包括 1.9 版本。
但你仍然可以使用 $.browser 作为独立插件，可以在 这里 找到。
寻找IE版本的另一种方法
http://tanalin.com/en/articles/ie-version-js/
检查的IE版本条件
IE 10 or older - document.all <BR/>
IE 9 or older - document.all && !window.atob <br/>
IE 8 or older - document.all && !document.addEventListener <br/>
IE 7 or older - document.all && !document.querySelector <br/>
IE 6 or older - document.all && !window.XMLHttpRequest <br/>
IE 5.x - document.all && !document.compatMode
您可以在此处获取浏览器类型：
<script>
var browser_type = Object.keys($.browser)[0];
alert(browser_type);
</script>
$(document).ready(function(){
alert('sdfsd');
checkOperatingSystem();
});
function checkOperatingSystem(){
var userAgent = navigator.userAgent || navigator.vendor || window.opera;
if (/android/i.test(userAgent)) {
alert('android');
}
if (/iPad|iPhone|iPod/.test(userAgent) && !window.MSStream) {
alert('ios');
}
if (navigator.appVersion.indexOf("Win")!=-1)
{
}
if (navigator.appVersion.indexOf("Mac")!=-1)
{
}
}
$.browser，那么您肯定不需要在代码中实现浏览器检测。无论哪种情况，都应考虑改用特性检测。 - WynandB