URL Object: Compare

compare.js

const baseUrl = 'https://medium.com';
const params = [
	{
		key: 'category',
		value: 'programming'
	},
	{
		key: 'subcategory',
		value: 'front-end'
	}
];

function oldWay(baseUrl, params) {
  const paramString = params.reduce((prev, current, index) => {
    const prefix = index === 0 ? '' : '&';
    return prev + `${prefix}${current.key}=${current.value}`;
  }, "?"); 
  
  return baseUrl + paramString;
}

function newWay(baseUrl, params) {
  const url = new URL(baseUrl);
  for (param of params) {
    url.searchParams.set(param.key, param.value);
  }
  
  return url.href;
}