add const to a string?

Question

I just startet learning React Native an got a problem.

i fetch a php file from my server and need to add a ID parameter to the url. the ID parameter is saved in a const.

How can I add my const to the end of the fetch url?

const Round = 1; return fetch('http://myurl/data.php?ID=')

Possible duplicate of Concatenating variables and strings in React — Roy Wang
– Roy Wang, Commented Apr 23, 2018 at 9:34

Ahsan Ali · Accepted Answer · 2018-04-23 09:49:14Z

All you need is to concatenate the Round variable.

const Round = 1; return fetch('http://myurl/data.php?ID='+Round);

return fetch(`http://myurl/data.php?ID=${Round}`);

Colin Burke · Accepted Answer · 2018-04-23 09:49:08Z

const round = 1; return fetch(`http://myurl/data.php?ID=${round}`);

Note: regular variables should have lowercase names, by convention.

Jitender Badoni · Accepted Answer · 2018-04-23 09:41:11Z

Just put const variable at the end

For Example :

const Round = 1; return fetch('http://myurl/data.php?ID='+Round)

3 Answers 3