How to do a request using a URI string containing / in javascript

Question

Hi I was trying to do a request using a URI string existing uit of an array of user Input. The array existing uit of objects with the form :

{
'name':string,
'value':string
}

Both strings can however contain the "/" character and quite often will as well as any other character that is illegal in an URI. I however want to make a request with the URI. To overcome the problem I tried using encodeURI :

let uri = JSON.stringify([{"name":"someName","value":"some strange characters /+-*°²³"}])
let request = 'things/'+encodeURI(uri)
console.log(request)

But if you look at the output you can clearly see that there are still illegal characters present in the request where they should not be. Does anyone know a solution to this problem? Thanks in advance.