打字稿等待在回调中不起作用

Question

I have two functions and I am calling cbf() from func() through callback and I am using await but after callback comes first.

function cbf(name, callback: Function) {
    console.log(name)
    callback("123")
}

function async func() {
    await cbf("alice", function(aa) {
        console.log(aa)
    })
    console.log("after callback")  
}

Answer 1

You should use Promise

 function cbf(x) { return new Promise(resolve => { setTimeout(() => { resolve(x); }, 2000); }); } async function f1() { var x = await cbf(10); console.log(x); // 10 } f1();