兼容各个浏览器(ie,firefox,chrome,opera)设为首页的js,javascript代码
2010-12-21 11:05codeif.com
设为首页的简单脚本:
<a
onclick="this.style.behavior='url(#default#homepage)';
this.setHomePage('http://www.codeif.com');
return false;"
href="#">设为首页</a>
但是这段代码只在ie下有效,在其它浏览器下js报this.setHomePage is not a function错,显然我们更想想在ie可以设为主页,在其它浏览器可以友好提示,这个怎么能做到呢?
在对比了多个网站的设为主页功能,感觉265依托google的技术,做的比较好,这里我把265设为首页的功能的js代码提取出来供大家参考,大家可以稍微修改,然后放到自己的网站就可以了
test.html代码
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<script type="text/javascript" src="js/set_home.js"></script>
</head>
<body>
<a id="SetHome" href="javascript:" onclick="_g.setHomeIfNecessary(false)"
style="behavior: url(#default#homepage)"> <b>设为首页</b> </a>
</body>
</html>
set_home.js代码
(function(){
var o = this, aa = function(a, b, c) {
a = a.split(".");
c = c || o;
!(a[0] in c) && c.execScript && c.execScript("var " + a[0]);
for ( var d; a.length && (d = a.shift());)
if (!a.length && b !== undefined)
c[d] = b;
else
c = c[d] ? c[d] : c[d] = {}
};
//检查浏览器是否有id为a的Element
var u = function(a) {
return typeof a == "string" ? document.getElementById(a) : a
};
var T = {};
T.init = function() {
T.startCheckSetHome()
};
T.startCheckSetHome = function() {
var a = u("SetHome");
a = T.searchAttributeToRoot(a, "ct");
var b = document.referrer || "", c = T.isHome(), d = x("My265ScreenWide"), e = x("My265Theme");
T.sendLog("pv", b, d + " " + e, c, a)
};
T.isHome = function() {
try {
var a = location.href, b = u("SetHome");
b.style.behavior = "url(#default#homepage)";
var c = b.isHomePage(a);
c = (c = c || b.isHomePage(a + "/")) || b.isHomePage(a + "/#");
return c = "" + c
} catch (d) {
return "unknown"
}
};
T.setHome = function() {
var a = u("SetHome"), b = location.href, c = "unknown";
try {
a.style.behavior = "url(#default#homepage)";
a.setHomePage(b);
c = T.isHome();
var d = T.searchAttributeToRoot(a, "ct");
T.sendLog("hom", "", "", c, d)
} catch (e) {
alert("\u60a8\u7684\u6d4f\u89c8\u5668\u4e0d\u652f\u6301\u81ea\u52a8\u8bbe\u7f6e\u4e3b\u9875\uff0c\u8bf7\u4f7f\u7528\u6d4f\u89c8\u5668\u83dc\u5355\u624b\u52a8\u8bbe\u7f6e");
return "unknown"
}
return c
};
T.setHomeIfNecessary = function(a) {
if (T.isHome() != "true")
return T.setHome();
a
|| alert("\u60a8\u5df2\u7ecf\u5c06265\u8bbe\u4e3a\u9996\u9875\uff0c\u8c22\u8c22\u60a8\u5bf9265\u7684\u652f\u6301!");
return "notexecute"
};
T.log = function(a) {
a = a.srcElement || a.target;
var b = a.tagName;
if ("A" != b) {
a = a.parentElement || a.parentNode;
b = a.tagName
}
if ("A" == b) {
b = a.href;
var c = a.getAttribute("cd");
c = c ? c.replace(/\s+/, "") : "";
var d = T.searchAttributeToRoot(a, "cad");
a = T.searchAttributeToRoot(a, "ct");
T.sendLog("sc", b, d, c, a)
}
};
T.searchAttributeToRoot = function(a, b) {
var c = "";
try {
for ( var d = a; d && !c; d = d.parentNode)
c = d.getAttribute(b)
} catch (e) {
return ""
}
return c
};
T.sendLog = function(a, b, c, d, e) {
if (!(b.indexOf("javascript:") == 0 && c != "theme")) {
a = [ "/log.html?action=", a, "&url=",
(encodeURIComponent || escape)(b), "&cd=", d, "&cad=", c,
"&ct=", e ].join("");
T.sendRequest(a)
}
};
T.sendRequest = function(a) {
a = [ a, "&cacheBust=", Math.random() ].join("");
(new Image).src = a
};
var Qa = window;
Qa.www265com = {};
window.www265com.logger = T;
var _g = window.www265com.logger;
aa("_g", _g, void 0);
})();