js query string

1const urlParams = new URLSearchParams(window.location.search);
2const myParam = urlParams.get('myParam');

1function getUrlParameter(name) {
2    name = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
3    var regex = new RegExp('[\\?&]' + name + '=([^&#]*)');
4    var results = regex.exec(location.search);
5    return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
6};

1const querystring = require('querystring');
2const url = "http://example.com/index.html?code=string&key=12&id=false";
3const qs = "code=string&key=12&id=false";
4
5console.log(querystring.parse(qs));
6// > { code: 'string', key: '12', id: 'false' }
7
8console.log(querystring.parse(url));

1serialize = function(obj) {
2  var str = [];
3  for (var p in obj)
4    if (obj.hasOwnProperty(p)) {
5      str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
6    }
7  return str.join("&");
8}
9
10console.log(serialize({
11  foo: "hi there",
12  bar: "100%"
13}));
14// foo=hi%20there&bar=100%25

1//Using query string to concat variable with string
2const txt = "My name is"
3console.log(`${txt} Paul`);