Question

How to create delay in JavaScript

Answer 1

function delay(sec) {
    let msec = sec * 1000;
    let start = new Date().getTime();
   
    for (let i = 0; i < 1e9; i++)  {
        if ((new Date().getTime() - start) > msec)
            break;
    }
}

console.log("abc");

delay(3);

console.log("xyz");
 
 
 
 
/*
run:
   
abc
xyz
   
*/

 

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Answer 2

const delay = 3;
 
setTimeout(function() {
  console.log("abc");
}, delay * 1000); // 3 sec
 
 
 
/*
run:
   
abc
   
*/

 

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Answer 3

function f() {
    console.log("abc");
}

setTimeout(f, 2 * 1000); // 2 sec

  
  
  
/*
run:
    
abc

*/

 

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