js url encode object code example

Example 1: js object to querystring

const params = {foo:"Hi", bar:"there"}
const queryString = new URLSearchParams(params).toString();

console.log(queryString);

Example 2: urlencode javascript

var url = encodeURIComponent('url');

Example 3: javascript object to params string

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

Example 4: js urlencode

/* There are 11 characters which are not encoded by encodeURI, 
but encoded by encodeURIComponent. */

encodeURI("test uri"); 
// "test%20uri"
encodeURI("test uri"); 
// "test%20uri"

encodeURI("test uri/with a slash"); 
// "test%20uri/with%20a%20slash"
encodeURIComponent("test uri/with a slash"); 
// "test%20uri%2Fwith%20a%20slash"