几个有用的js函数

function GetRequest() {
var url = location.search; //获取url中"?"符后的字串
var theRequest = new Object();
if (url.indexOf("?") != -1) {
var str = url.substr(1);
strs = str.split("&");
for(var i = 0; i < strs.length; i ++) {
theRequest[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);
}
}
return theRequest;
}
//使用方法
function use(){
var Request = new Object();
Request = GetRequest();

alert(Request["salse"]);
}

(function(bool) {
function setInnerText(o, s) {
while (o.childNodes.length != 0) {
o.removeChild(o.childNodes[0]);
}
o.appendChild(document.createTextNode(s));
}
function getInnerText(o) {
var sRet = "";
for (var i = 0; i < o.childNodes.length; i++) {
if (o.childNodes[i].childNodes.length != 0) {
sRet += getInnerText(o.childNodes[i]);
}
if (o.childNodes[i].nodeValue) {
if (o.currentStyle.display == "block") {
sRet += o.childNodes[i].nodeValue + "n";
} else {
sRet += o.childNodes[i].nodeValue;
}
}
}
return sRet;
}
if (bool) {
HTMLElement.prototype.__defineGetter__("currentStyle", function() {
return this.ownerDocument.defaultView.getComputedStyle(this, null);
});
HTMLElement.prototype.__defineGetter__("innerText", function() {
return getInnerText(this);
})
HTMLElement.prototype.__defineSetter__("innerText", function(s) {
setInnerText(this, s);
})
}
})(/Firefox/.test(window.navigator.userAgent));