function getParamValue(param) {
    var urlParamString = location.search.split(param + "=");
    if (urlParamString.length <= 1) return "";
    else {
        var tmp = urlParamString[1].split("&");
        return tmp[0];
    }
}

无论参数是否为最后一个，这都适用于您的情况。

看看这个

function getURLParameters(paramName)
{
    var sURL = window.document.URL.toString();
    if (sURL.indexOf("?") > 0)
    {
        var arrParams = sURL.split("?");
        var arrURLParams = arrParams[1].split("&");
        var arrParamNames = new Array(arrURLParams.length);
        var arrParamValues = new Array(arrURLParams.length);

        var i = 0;
        for (i = 0; i<arrURLParams.length; i++)
        {
            var sParam =  arrURLParams[i].split("=");
            arrParamNames[i] = sParam[0];
            if (sParam[1] != "")
                arrParamValues[i] = unescape(sParam[1]);
            else
                arrParamValues[i] = "No Value";
        }

        for (i=0; i<arrURLParams.length; i++)
        {
            if (arrParamNames[i] == paramName)
            {
                //alert("Parameter:" + arrParamValues[i]);
                return arrParamValues[i];
            }
        }
        return "No Parameters Found";
    }
}

我很早以前就发现了这一点，非常简单：

function getUrlVars() {
    var vars = {};
    var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi,    
    function(m,key,value) {
      vars[key] = value;
    });
    return vars;
  }

然后这样称呼：

var fType = getUrlVars()["type"];

我的解决方案：

/**
 * get object with params from query of url
 */
const getParams = (url) => {
  const params = {};
  const parser = document.createElement('a');
  parser.href = url;
  const query = parser.search.substring(1);
  if (query !== '') {
    const vars = query.split('&');
    for (let i = 0; i < vars.length; i++) {
      const pair = vars[i].split('=');
      const key = decodeURIComponent(pair[0]).replace('[]', '');
      const value = decodeURIComponent(pair[1]);
      
      if (key in params) {
        if (Array.isArray(params[key])) {
          params[key].push(value);
        } else {
          params[key] = [params[key]];
          params[key].push(value);
        }
      } else params[key] = value;
    }
  }
  return params;
}

您可以简单地使用核心javascript以js对象的形式获取参数的键值：

var url_string = "http://www.example.com/t.html?a=1&b=3&c=m2-m3-m4-m5";
var url = new URL(url_string);
let obj = {};
var c = url.searchParams.forEach((value, key) => {
  obj[key] = value;
});
console.log(obj);

我尽可能喜欢速记：

网址：example.com/mortgage_calc.htm？pmts=120&intr=6.8&prin=10000

香草Javascript：

for ( var vObj = {}, i=0, vArr = window.location.search.substring(1).split('&');
        i < vArr.length; v = vArr[i++].split('='), vObj[v[0]] = v[1] ){}
// vObj = {pmts: "120", intr: "6.8", prin: "10000"}