How to return an Ajax result using async/await?

either

function f() { 
  return $.get('/');
};

async test() {
  var x = await f()
  console.log(x)
}

test()

or

f().then(function(res) {
    console.log(res)
}

the async/await is just another way to write the same logic.

await and async are basically just syntactical sugar on top of Promise. If you end up with a Promise at the end, you still need to treat it like a Promise.

const response = f().then(() => { });

Or, if you are calling it inside of an async function, you can await to resolve it:

async function main() {
  const response = await f();
  console.log(response);
}

A pattern I like to use is have my main code wrapped in a self-executing async function, so I can still use await:

(async () => {
  const result = await doSomething();
  console.log(result);
})();

Note that even with that pattern, I need a final catch() to catch any errors it may have that aren't caught otherwise:

(async () => {
  // blah blah
})().catch(() => {});