js浏览器判断选择(转载)
2012-11-10 23:50 lyw90 阅读(208) 评论(0) 编辑 收藏 举报function browser() {
var A = function() {
var B = navigator.userAgent.toLowerCase(),
D = function(F, G) {
if (!F.className) {
F.className = G
} else {
var E = F.className;
E += (" " + G);
F.className = E
}
},
C = function(E) {
return (B.indexOf(E) != -1)
};
D(document.getElementsByTagName("html")[0],
[(!(/opera|webtv/i.test(B)) && /msie (\d)/.test(B)) ? ("ie ie" +
RegExp.$1) : C("firefox/2") ? "gecko ff2": C("firefox/3") ? "gecko
ff3": C("gecko/") ? "gecko": C("chrome/") ? "chrome": C("opera/9") ?
"opera opera9": /opera (\d)/.test(B) ? "opera opera" + RegExp.$1:
C("konqueror") ? "konqueror": C("applewebkit/") ? "webkit safari":
C("mozilla/") ? "gecko": "", (C("x11") || C("linux")) ? " linux":
C("mac") ? " mac": C("win") ? " win": ""].join(" "))
} ()
}
if (window.addEventListener) {
window.addEventListener("load", browser, false)
} else {
if (window.attachEvent) {
window.attachEvent("onload", browser)
}
};
在js判断浏览器后，比如判断为chrome,则<html xmlns="http://www.w3.org/1999/xhtml" class="chrome">,利用class chrome 定义差别。
