Answers for "js how to make a callback function with a delay"

delay in javascript

setTimeout(function() {
 //your code here
}, 1000);

delay statement in js

function delay(delayInms) {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve(2);
    }, delayInms);
  });
}

async function sample() {
  console.log('a');
  console.log('waiting...')
  let delayres = await delay(3000);
  console.log('b');
}
sample();
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