更新内容:

1.新增可以自定义提示参数名

2.提交等事件可以只绑定一次

3.整合一些常用的验证到里面去

var urlHelp = {};
// 跳转页面
urlHelp.GoUrl = function(url, addbackurl) {
    if (addbackurl != true)
        addbackurl = false;

    if (addbackurl == true) {
        var backurl = urlHelp.request('backurl');
        if (backurl != null && backurl != undefined && backurl != "") {
            url = urlHelp.setRequest(url, "backurl", backurl);
        }
    }
    location.replace(url);
}
//得到当前页面URL
urlHelp.getPageUrl = function() {
    var oldurl = location.href;

    var url = oldurl.substring(oldurl.length - 1, oldurl.length);
    while (url == "#") {
        oldurl = oldurl.substring(0, oldurl.length - 1);
        url = oldurl.substring(oldurl.length - 1, oldurl.length);
    }
    oldurl = urlHelp.setRequest(oldurl, "mathrandom", Math.random());
    return oldurl;


    if (oldurl.indexOf('?') != -1) {
        var index = oldurl.lastIndexOf("&", oldurl.length);
        if (index != -1) {
            var a = oldurl.substring(index + 1, oldurl.length);
            if (!isNaN(a)) {
                oldurl = oldurl.substring(0, index)
            }
        }
        oldurl = oldurl + "&" + Math.random();
    }
    else {
        oldurl = oldurl + "?" + Math.random();
    }
    return oldurl;
}
//对内容进行编码
urlHelp.getEncodeURI = function(content) {
    content = encodeURIComponent(content);
    content = urlHelp.MyReplace(content, "#", "%23");
    return content;
}
// 对内容进行替换
urlHelp.MyReplace = function(content, value1, value2) {
    var reg = new RegExp(value1, "g");
    content = content.replace(reg, value2);
    return content;
}
// 获取URL参数
urlHelp.request = function(paras) {
    var url = location.href;
    var paraString = url.substring(url.indexOf("?") + 1, url.length).split("&");
    var paraObj = {}
    for (i = 0; j = paraString[i]; i++) {
        paraObj[j.substring(0, j.indexOf("=")).toLowerCase()] = j.substring(j.indexOf("=") + 1, j.length);
    }
    var returnValue = paraObj[paras.toLowerCase()];
    if (typeof (returnValue) == "undefined") {
        return "";
    } else {
        return urlHelp.MyReplace(returnValue, '#', '');
    }
}

urlHelp.setRequest = function(url, par, par_value) {
    var pattern = par + '=([^&]*)';
    var replaceText = par + '=' + par_value;

    if (url.match(pattern)) {
        var tmp = '/\\' + par + '=[^&]*/';
        tmp = url.replace(eval(tmp), replaceText);
        return (tmp);
    }
    else {
        if (url.match('[\?]')) {
            return url + '&' + replaceText;
        }
        else {
            return url + '?' + replaceText;
        }
    }

    return url;
}
// JavaScript Document
if (typeof (HTMLElement) != "undefined") {
    HTMLElement.prototype.insertAdjacentElement = function(where, parsedNode) {
        switch (where) {
            case "beforeBegin":
                this.parentNode.insertBefore(parsedNode, this);
                break;
            case "afterBegin":
                this.insertBefore(parsedNode, this.firstChild);
                break;
            case "beforeEnd":
                this.appendChild(parsedNode);
                break;
            case "afterEnd":
                if (this.nextSibling)
                    this.parentNode.insertBefore(parsedNode, this.nextSibling);
                else
                    this.parentNode.appendChild(parsedNode);
                break;
        }
    }
    HTMLElement.prototype.insertAdjacentHTML = function(where, htmlStr) {
        var r = this.ownerDocument.createRange();
        r.setStartBefore(this);
        var parsedHTML = r.createContextualF