How to convert url parameters to object in JavaScript

In this Article we will go through how to convert url parameters to object only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const getUrlParams = query => Array.from(new URLSearchParams(query)).reduce((p, [k, v]) => Object.assign({}, p, { [k]: p[k] ? (Array.isArray(p[k]) ? p[k] : [p[k]]).concat(v) : v}), {});


getUrlParams(;              // Get the parameters of the current URL

getUrlParams('foo=Foo&bar=Bar');            // { foo: "Foo", bar: "Bar" }

// Duplicate key
getUrlParams('foo=Foo&foo=Fuzz&bar=Bar');   // { foo: ["Foo", "Fuzz"], bar: "Bar" }