替换Url后面参数的值

//替换指定传入参数的值,paramName为参数,replaceWith为新值
function replaceParamVal(paramName, replaceWith) {
    var oUrl = this.location.href.toString();
    var re = eval('/(' + paramName + '=)([^&]*)/gi');
    var nUrl = oUrl.replace(re, paramName + '=' + replaceWith);
    this.location = nUrl;
    window.location.href = nUrl
}

调用方法：replaceParamVal(参数名，值)