Url参数获取和更改

获取多个url参数

getUrlParam:function (name){
    var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
    var r = window.location.search.substr(1).match(reg);
    if(r!=null)
    return  unescape(r[2]);
    return null;
}

获取单个url参数

getUrlParam:function (name){
    var params = location.search.substr(1);
    var ArrParam = params.split('&');
    for(var i = 0; i <ArrParam.length; i ++){
        if(ArrParam[i].split('=')[0] == name){
            return ArrParam[i].split('=')[1];
        }
    }
}

修改url地址

changeURLPar:function(url,arg,arg_val){
    var pattern=arg+'=([^&]*)'; 
    var replaceText=arg+'='+arg_val; 
    if(url.match(pattern)){ 
        var tmp='/('+ arg+'=)([^&]*)/gi'; 
        tmp=url.replace(eval(tmp),replaceText); 
        return tmp; 
    }else{ 
        if(url.match('[\?]')){ 
            return url+'&'+replaceText; 
        }else{ 
            return url+'?'+replaceText; 
        } 
    } 
    return url+'\n'+arg+'\n'+arg_val; 
}
//用法
var txt = window.location.href
changeURLPar(txt, 'type', 99)