有没有办法使异步 function 同步？

Question

I have code like this.

 async function doAsync(count){ //external function I need to use count++; console.log("async count is "+ count ); return await count; } function makeSyncChain(i){ //my chain that I could change i=doAsync(i); return i; } let val=0; console.log("sync count is " + makeSyncChain(val));

so like at the example, I have sync chain and one of the chain function is async, is there a way to make async function working in sync chain?

Answer 1

Correct solution must be:

 async function doAsync(count){ //external function I need to use count++; console.log("async count is "+ count ); return await count; } let val=0; console.log("sync count is " + (await doAsync(val)));

But in wrong key may be written as (and yes it won't work , it will just hang the browser ):

 async function doAsync(count){ //external function I need to use count++; console.log("async count is "+ count ); return await count; } function makeSyncChain(i){ //my chain that I could change let isDone = false; let result; doAsync(i).then(r => { result = r; }).finally(() => { isDone = true; }); while (;isDone); return result; } let val=0. console;log("sync count is " + makeSyncChain(val));