js获取替换url参数

function UpdateUrlParam(name, val) {
        var thisURL = document.location.href;
        if (thisURL.indexOf(name+'=') > 0) {
            var v = getUrlParam(name);
            if (v != null) {
                thisURL = thisURL.replace(name + '=' + v, name + '=' + val);
            }
            else {
                thisURL = thisURL.replace(name + '=', name + '=' + val);
            }
            
        }
        else {
            if (thisURL.indexOf("?") > 0) {
                thisURL = thisURL + "&" + name + "=" + val;
            }
            else {
                thisURL = thisURL + "?" + name + "=" + val;
            }
        }
        location.href = thisURL;

    };

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

 

来源：CSDN

作者：tang05709

链接：https://blog.csdn.net/tang05709/article/details/104427335