Convert ascii character codes into letters in a string containing text and ascii codes in JS

Question

I am working on an HTML web page, and in the js, I read the end of the URL and place it in a div eg if the URL is

http://example.com/file.html?postval=Hello, world!

it should post "Hello, world!", unfortunately, it posts "Hello,%20world". how can I fix this?

Answer 1

Use decodeURIComponent

var a = decodeURIComponent('Hello,%20world');

a = 'Hello, world!';