您可以通过以下函数实现：

function getParameter(parameterName){
        let paramsIndex = document.URL.indexOf("?");
        let params="";
        if(paramsIndex>0)
            params=document.URL.substring(paramsIndex+1, document.URL.length).split("&");
        let result = [];
        for(let i=0;i<params.length;i++)
        {
            console.warn(params[i].split("=")[0].toString()+ "," + params[i].split("=")[1].toString());
            var obj = {"key":params[i].split("=")[0].toString(),"value":params[i].split("=")[1].toString()};
            result.push(obj);
        }
        return passedValue = result.find(x=>x.key==parameterName).value;
    }

现在您可以使用getParameter（“parameterName”）获取参数值

您可以添加一个输入框，然后要求用户将值复制到其中……这非常简单：

<h1>Hey User! Can you please copy the value out of the location bar where it says like, &m=2? Thanks! And then, if you could...paste it in the box below and click the Done button?</h1>
<input type='text' id='the-url-value' />
<input type='button' value='This is the Done button. Click here after you do all that other stuff I wrote.' />

<script>
//...read the value on click

好吧，但说真的。。。我发现了这段代码，它似乎很有用：

http://www.developerdrive.com/2013/08/turning-the-querystring-into-a-json-object-using-javascript/

function queryToJSON() {
    var pairs = location.search.slice(1).split('&');

    var result = {};
    pairs.forEach(function(pair) {
        pair = pair.split('=');
        result[pair[0]] = decodeURIComponent(pair[1] || '');
    });

    return JSON.parse(JSON.stringify(result));
}

var query = queryToJSON();

// http:localhost:8080/path?param_1=a&param_2=b
var getParamsMap = function () {
    var params = window.location.search.split("&");
    var paramsMap = {};
    params.forEach(function (p) {
        var v = p.split("=");
        paramsMap[v[0]]=decodeURIComponent(v[1]);
    });
    return paramsMap;
};

// -----------------------

console.log(getParamsMap()["param_1"]);  // should log "a"     

简单的方法

function getParams(url){
        var regex = /[?&]([^=#]+)=([^&#]*)/g,
            params = {},
            match;
        while(match = regex.exec(url)) {
            params[match[1]] = match[2];
        }
        return params;
    }

然后像getParams（url）一样调用它

ECMAScript 6解决方案：

var params = window.location.search
  .substring(1)
  .split("&")
  .map(v => v.split("="))
  .reduce((map, [key, value]) => map.set(key, decodeURIComponent(value)), new Map())

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;
}