wait for function js code example

Example 1: wait for time javascript

//code before the pause
setTimeout(function(){
    //do what you need here
}, 2000);

Example 2: how to wait in javascript

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

Example 3: wait until a function finishes javascript

function firstFunction(_callback){
    // do some asynchronous work
    // and when the asynchronous stuff is complete
    _callback();    
}

function secondFunction(){
    // call first function and pass in a callback function which
    // first function runs when it has completed
    firstFunction(function() {
        console.log('huzzah, I\'m done!');
    });    
}