How to convert from object to query string in javascript

var obj = {
  param1: 'test',
  param2: true,
}

var str = "";

for (var key in obj) {
  if (str != "") {
    str += "&";
  }
  str += key + "=" + obj[key];
}

console.log(str);

const obj = {
  param1: 'test',
  param2: 'true',
  param3: 'test2',
  param4: 'NO',
}

const entries = Object.values(obj)

const trueObj = {}
for (let i = 0; i < entries.length; i += 2) {
  trueObj[entries[i]] = entries[i + 1]
}

const params = new URLSearchParams(trueObj)

const queryString = params.toString()

console.log(queryString)