Javascript - Thread Wait ?


JavaScript is a single-thread event-based model. Therefore, you don't want and can't stop the execution of code. May be with promise ?


Web API setTimeout

The setTimeOut is wrapper around code that create a job to execute it later. The execution of the thread (of the code) does not stop.

See Browser - setTimeOut


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

async function demo() {
  console.log('Taking a break...');
  await sleep(2000);
  console.log('Two second later');

var button = document.getElementById("startButton");
button.addEventListener("click", function () { demo() }, false);
<button id="startButton">Start Demo</button>



Documentation / Reference

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