Callback function js

John Feltz

Code: Javascript

2021-02-24 21:54:05

function greeting(name) {
  alert('Hello ' + name);
}

function processUserInput(callback) {
  var name = prompt('Please enter your name.');
  callback(name);
}

processUserInput(greeting);

4

Zealous Zebra

Code: Javascript

2021-01-26 16:40:29

function add(a, b, callback) {
  if (callback && typeof(callback) === "function") {
    callback(a + b);
  }
}

add(5, 3, function(answer) {
  console.log(answer);
});

0

Marwa kamal

Code: Javascript

2021-03-06 19:32:40

function greeting(name) {
  alert('Hello ' + name);
}

function processUserInput(callback , {
  var name = prompt('Please enter your name.');
  callback(name);
}}

processUserInput(greeting);

1

user79894

Code: Javascript

2021-02-24 21:53:19

const message = function() {  
    console.log("This message is shown after 3 seconds");
}
 
setTimeout(message, 3000);

1

J.R. Bob Dobbs

Code: Javascript

2021-02-24 21:54:46

//Callback functions - are functions that are called AFTER something happened

  const foo = (number, callbackFunction) => {
    //first 
    console.log(number)
    
    //second - runs AFTER console.log() happened
    callbackFunction()
  }

1

Longshanks

Code: Javascript

2021-08-14 14:12:15

function createQuote(quote, callback){ 
  var myQuote = "Like I always say, " + quote;
  callback(myQuote); // 2
}

function logQuote(quote){
  console.log(quote);
}

createQuote("eat your vegetables!", logQuote); // 1

// Result in console: 
// Like I always say, eat your vegetables!

0

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