JSFiddle - React, Tailwind, and code Playground

by marcolino

JavaScript

var myHash = {
       a: [1,2],
       b: [1,2,3]
    }
    var myString = '';
    Object.keys(myHash).map(function(key, index) {
      myHash[key].map(function(value) {
        myString += myString.length ? '&' : '';
        myString += key + '=' + value;
      });
    });
    console.log(myString);