Wait script?

Question

Language: JavaScript
What is the line to use when you want it to wait for a second? I thought

wait(1)

But apparently it doesn’t work

Answer 1

well javascript doesn't have any global wait function .

There is a window object though . If you loop over it you will know the methods or attributes it makes available to use .

You can use window.setTimeout method .

setTimeout(function name, time)

For example:

setTimeout(test, 1000) ;

function test(){

}

The above will wait for 1 second and then execute test function .

Also setTimeout works asynchronously , i.e. javascript will still execute other pieces of code for that 1 second outside setTimeout .

Answer 2

Javascript seems a bit different on that compared to other languages. According to this thread I found on stackoverflow:
https://stackoverflow.com/questions/951021/what-is-the-javascript-version-of-sleep#39914235

you would need to write your own sleep function to pause the code for an amount of time

function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); }

and use it as follow:

sleep(1000)

I hope this helps :)

Answer 3

you cannot "wait" before continuing the script execution...

but you could "timeout", or even "interval" a callback function (wich will be executed after a certain delay):

setTimeout(() => {
console.log("about 2 secondes ellapsed");
}, 2000);

similary, there's a setInterval() function... check the documentation to know more about both:

https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Asynchronous/Timeouts_and_intervals

Answer 4

Apollo-Roboto I guess that OP expected waiting and then executing following lines of script... but your solution let next lines of script be executed without waiting ^^

even if you could block script execution by doing:

await sleep(1000);

that's not the correct way to do in web context javascript (all page will freeze during 1 second)...

the only valuable way is to defer a function execution with setTimeout ;)

Answer 5

Javascript does’nt support that feature even though some functions like setTimeout seems that they can do that , but what is really doing that behind the scence is your browser engine which is written in C++ , so actually C++ is doing that for you