object into query string parameters in JavaScript

object into query string parameters in JavaScript.js

var params = {
    a: 1,
    b: 2,
    c: 3
};

var queryString = Object.keys(params).map(key => key + '=' + params[key]).join('&');
// or

var queryString = Object.keys(params).map(function(key) {
    return key + '=' + params[key]
}).join('&');


// jquery 

var queryString = $.param(params);

// node.js module 

const querystring = require('querystring');

let queryString = querystring.stringify(params);