Javascript How To Wait Until A Function Is Complete

Using this method function b can only execute after function a as the trigger only exists when function a is finished executing.

Javascript how to wait until a function is complete. Wait until something happens or timeout. Document ready function var country city. In order to wait for a promise to finish before returning the variable the function can be set with settimeout so that the function waits for a few milliseconds. Await wait 2000 console warn done using async await syntax which is nicer than promise s then syntax.

Use of settimeout function. Var prom wait 2000 prom is a promise. Function b second function code here document bind function a complete b. Use of async or await function.

Function a first function code here document trigger function a complete. I m an experienced programmer but not too great at javascript so i m looking to see if i m doing this right. Async functions enable the use of await. Var result await someasynccall.

When called async functions resolve with whatever is returned in their body. So i came up with this async function that takes a function to evaluate if a condition is met and a timeout in milliseconds. Let s wrap it in an immediately invoked function for brevity. I m trying to get user s city and country before moving on with my code.

Var showdone console warn done prom then showdone same thing using await syntax. The keyword await makes javascript wait until the promise returns a result. Await pauses the execution of async functions. It seems as if javascript is not executed in the order i need.

It returns a. Below program will illustrate the approach. It has to be noted that it only makes the async function block wait and not the whole program execution.