因为业务需求，项目经理让我做一个判断当前浏览器是否是谷歌浏览器，并确定谷歌浏览器版本，不满足谷歌浏览器和版本就显示一个页面提示升级，满足条件就跳转到我们的一个项目，下面先来实现这个：
1.当前浏览器是否是谷歌浏览器和确定浏览器浏览器版本号
JavaScript实现：
/* 检查浏览器是否为谷歌 */
(function() {
//取得浏览器的userAgent字符串
var myBrowser,chromeVersion,version,userAgent = navigator.userAgent;
var arr = navigator.userAgent.split(' ');
for(var i=0;i < arr.length;i++){
if(/chrome/i.test(arr[i]))
chromeVersion = arr[i]
}
if(chromeVersion){
version = Number(chromeVersion.split('/')[1].split('.')[0]);
} else {
version = false;
}
if (userAgent.indexOf("Chrome") > -1 && version >=49) {
myBrowser = true
} else {
myBrowser = false
}
if(myBrowser) {
// 跳转到对应的项目
} else {
var wrap = document.getElementById('wrap');
wrap.style.display = "block" //让元素显示
}
})();
全部的代码(图片是在网上找的谷歌的图片)：
<!DOCTYPE html>
<html>
<head>
<title>请升级您的浏览器</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<!-- IE8/9及以后的版本用最新的引擎渲染网页 -->
<meta content="IE=edge" http-equiv="X-UA-Compatible">
<style>
body{
font-size: 13px;
font-family: Georgia,Verdana,sans-serif;
color: #333;
padding: 0;
margin: 0;
}
.wrap{
display:none;
min-width: 1024px;
margin: 47px 20px;
background-color: #ffffff;
position: relative;
}
.wrap .title{
text-align: center;
margin: 13px 25px;
font-weight: bold;
font-size: 19px;
}
.wrap .list{
width: 100%;
margin-bottom: 10px;
}
.wrap .list .item{
text-align: center;
padding: 10px;
width: 25%;
}
.wrap .list .item:hover .link{
}
.wrap .list .item .link{
padding-top: 110px;
padding-bottom: 4px;
background-position: center top;
background-repeat: no-repeat;
display: block;
text-decoration: none;
}
.wrap .list .item .bc{
background-size: auto 100%;
background-image: url('./images/google.jpg');
}
.wrap .list .name{
width:100%;
color: #e25600;
text-align: center;
text-decoration: underline;
font-size: 19px;
font-family: 'Open Sans',sans-serif;
font-weight: 300;
}
.wrap .list .vendor{
width:100%;
font-size: 10px;
color: #aaa;
text-align: center;
display: block;
margin-top: 5px;
text-decoration: none;
}
.wrap .tag {
text-align: center;
margin: 13px 25px;
font-size: 19px;
font-family: 'Open Sans',sans-serif;
font-weight: 300;
}
</style>
</head>
<body>
<div class="wrap" id="wrap">
<p class="title">您的浏览器需要更新,请下载一款免费而优秀的最新版浏览器。</p>
<table class="list">
<tr>
<td class="item">
<a class="link bc" href="http://www.google.cn/chrome/browser/desktop/index.html" target="_blank"></a>
<span class="name">Chrome</span>
<span class="vendor">Google</span>
</td>
</tr>
</table>
<p class="tag">带来更多安全、极速和乐趣。</p>
</div>
<script>
/* 检查浏览器是否为谷歌 */
(function() {
//取得浏览器的userAgent字符串
var myBrowser,chromeVersion,version,userAgent = navigator.userAgent;
var arr = navigator.userAgent.split(' ');
for(var i=0;i < arr.length;i++){
if(/chrome/i.test(arr[i]))
chromeVersion = arr[i]
}
if(chromeVersion){
version = Number(chromeVersion.split('/')[1].split('.')[0]);
} else {
version = false;
}
if (userAgent.indexOf("Chrome") > -1 && version >=49) {
myBrowser = true
} else {
myBrowser = false
}
if(myBrowser) {
// 跳转到对应的项目
} else {
var wrap = document.getElementById('wrap');
wrap.style.display = "block" //让元素显示
}
})();
</script>
</body>
</html>
效果：
2.判断当前浏览器类型
function myBrowser(){
var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
if (userAgent.indexOf("Opera") > -1) {
return "Opera"
}; //判断是否Opera浏览器
if (userAgent.indexOf("Firefox") > -1) {
return "FF";
} //判断是否Firefox浏览器
if (userAgent.indexOf("Chrome") > -1){
return "Chrome";
}
if (userAgent.indexOf("Safari") > -1) {
return "Safari";
} //判断是否Safari浏览器
if (userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera)
{
return "IE";
}; //判断是否IE浏览器
}
//以下是调用上面的函数
var nowBrowser = myBrowser();
if ("IE" == nowBrowser) {
alert("IE");
}
if ("FF" == nowBrowser) {
alert("Firefox");
}
if ("Chrome" == nowBrowser) {
alert("Chrome");
}
if ("Opera" == nowBrowser) {
alert("Opera");
}
if ("Safari" == nowBrowser) {
alert("Safari");
}
3.判断当前浏览器类型，并考虑IE5.5 6 7 8
function myBrowser(){
var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
var isOpera = userAgent.indexOf("Opera") > -1; //判断是否Opera浏览器
var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判断是否IE浏览器
var isFF = userAgent.indexOf("Firefox") > -1; //判断是否Firefox浏览器
var isSafari = userAgent.indexOf("Safari") > -1; //判断是否Safari浏览器
if (isIE) {
var IE5 = IE55 = IE6 = IE7 = IE8 = false;
var verIE = new RegExp("MSIE (\\d+\\.\\d+);");
verIE.test(userAgent);
var fIEVersion = parseFloat(RegExp["$1"]);
IE55 = fIEVersion == 5.5;
IE6 = fIEVersion == 6.0;
IE7 = fIEVersion == 7.0;
IE8 = fIEVersion == 8.0;
if (IE55) {
return "IE55";
}
if (IE6) {
return "IE6";
}
if (IE7) {
return "IE7";
}
if (IE8) {
return "IE8";
}
}//isIE end
if (isFF) {
return "FF";
}
if (isOpera) {
return "Opera";
}
}
//以下是调用上面的函数
var nowBrowser = myBrowser()
if (nowBrowser == "FF") {
alert("Firefox");
}
if (nowBrowser == "Opera") {
alert("Opera");
}
if (nowBrowser == "Safari") {
alert("Safari");
}
if (nowBrowser == "IE55") {
alert("IE5.5");
}
if (nowBrowser == "IE6") {
alert("IE6");
}
if (nowBrowser == "IE7") {
alert("IE7");
}
if (nowBrowser == "IE8") {
alert("IE8");
}