javascript build query string from object code example

Example 1: object to query string javascript

const queryString = Object.keys(params).map(key => {
  encodeURIComponent(key) + '=' + encodeURIComponent(params[key])
}).join('&');

Example 2: javascript object to params string

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

Example 3: javascript object to query string

function objectToQueryString(obj) {
  var str = [];
  for (var p in obj)
    if (obj.hasOwnProperty(p)) {
      str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
    }
  return str.join("&");
}

var person = { first_name : "Marty",last_name : "Mcfly"};
var queryString=objectToQueryString(person); //"first_name=Marty&last_name=Mcfly"

Example 4: javascript convert object to querystring

const queryString = new URLSearchParams(props.location.search);
//or
var queryString = Object.keys(params).map(key => key + '=' + params[key]).join('&');
//Extracting query String key value pairs
for (let param of queryString.entries()) {
      console.log(param);
}