Delay / sleep in javascript?

Question

Is there an easy way to pause a script in javascript? I am looking for javascript equivalent time.sleep(1)in Python. I do NOT want setTimeout(continueExecution, 10)or anything with getTime. It can be done?

EDIT: It wasn’t that easy, but I think I can do it with setTimeout

Answer 1

JavaScript usually runs in a single thread using an event loop. That is why you cannot do "Thread.sleep". If you could freeze it all the rest for this period and believe that you do not want to do this. This is why almost everything in JavaScript works using non-blocking IO, and therefore the only way to slow down is to use setTimeout or setInterval.

Answer 2

setTimeout, :

: . javascript , WILL . . .

var delay = 5; // 5 second delay
var now = new Date();
var desiredTime = new Date().setSeconds(now.getSeconds() + delay);

while (now < desiredTime) {
    now = new Date(); // update the current time
}

// continue execution

Answer 3

jQuery 1.5+, (i

(function($) {
    $.wait = function(time) {
         return $.Deferred(function(dfd) {
               setTimeout(dfd.resolve, time); // use setTimeout internally. 
         }).promise();
    }
}(jQuery));

:

$.wait(3000).then(function(){ 
   ....
});

3 . setTimeout , JavaScript.

Answer 4

: ( http://www.phpied.com/sleep-in-javascript/)

function sleep(milliseconds) {
  var start = new Date().getTime();
  for (var i = 0; i < 1e7; i++) {
    if ((new Date().getTime() - start) > milliseconds){
      break;
    }
  }
}

script , . , , , - .

Answer 5

npm, sleep,

var sleep = require('sleep');
sleep.sleep(10) //sleep for 10 seconds

JavaScript, Node.js!

, , then-sleep npm,

  var sleep = require('then-sleep');

// Sleep for 1 second and do something then. 
sleep(1000).then(...);

also if you use ES7, you can use the espm-sleep es7 package

Answer 6

You do something like this

// place you code in this function 
(async function main(){

    //Do something
    console.log("something Done first ")
    // code execution will halt for period (ms)
    await sleep(3000)

    console.log("something Done 3 seconds later ")
    //Do something

})()

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

Answer 7

if you use node 9.3 or higher you can use Atomics.wait()like this

function msleep(n) {
   Atomics.wait(new Int32Array(new SharedArrayBuffer(4)), 0, 0, n);
  }
function sleep(n) {
    msleep(n*1000);
}

now you can call sleep()