Returning the response from fetch to the function which called it

Question

I have a code something like this:

function getData(query){
    fetch('some-url').then((res)=>res.json())
    .then((res)=>{
      return 'string'+res.data
    })

The above function is

var data = getData('text');

I want the getData function to return modified string to store it in the variable data. How do I achieve this?

Answer 1

function getData(query){
    return  fetch('some-url').then((res)=>res.json())
    .then((res)=>{
      return 'string'+res.data
    })

and call it like

    getData('text').then(function(res){
       //your code should be here 
       var data=res;
    });