JAVASCRIPT

get params js

// www.example.com/users?token=12345

let params = (new URL(document.location)).searchParams;
let token = params.get("token");
// 12345

JS get parameters

let param = (new URL(document.location)).searchParams;
let data = param.get("data");

get javascript parameter

function GetURLParameter(sParam)
{
    var sPageURL = window.location.search.substring(1);
    var sURLVariables = sPageURL.split('&');
    for (var i = 0; i < sURLVariables.length; i++) 
    {
        var sParameterName = sURLVariables[i].split('=');
        if (sParameterName[0] == sParam) 
        {
            return sParameterName[1];
        }
    }
}​

How to retrieve GET parameters from JavaScript

function getSearchParameters() {     var prmstr = window.location.search.substr(1);     return prmstr != null && prmstr != "" ? transformToAssocArray(prmstr) : {}; }  function transformToAssocArray( prmstr ) {     var params = {};     var prmarr = prmstr.split("&");     for ( var i = 0; i < prmarr.length; i++) {         var tmparr = prmarr[i].split("=");         params[tmparr[0]] = tmparr[1];     }     return params; }  var params = getSearchParameters();

how to get params from function js

var STRIP_COMMENTS = /((//.*$)|(/*[sS]*?*/))/mg;
var ARGUMENT_NAMES = /([^s,]+)/g;
function getParamNames(func) {
  var fnStr = func.toString().replace(STRIP_COMMENTS, '');
  var result = fnStr.slice(fnStr.indexOf('(')+1, fnStr.indexOf(')')).match(ARGUMENT_NAMES);
  if(result === null)
     result = [];
  return result;
}

how to get params from function js

var fn = function(/* whoa) */ hi, you){};

fn.toString()
  .replace(/((//.*$)|(/*[sS]*?*/)|(s))/mg,'')
  .match(/^functions*[^(]*(s*([^)]*))/m)[1]
  .split(/,/)

["hi", "you"]