javascript callback explained code example
Example 1: javascript callback
function greeting(name) {
alert('Hello ' + name);
}
function processUserInput(callback) {
var name = prompt('Please enter your name.');
callback(name);
}
processUserInput(greeting);
Example 2: callback in js
function greeting(name) {
alert('Hello ' + name);
}
function processUserInput(callback , {
var name = prompt('Please enter your name.');
callback(name);
}}
processUserInput(greeting);
Example 3: what are callbacks
names = ['Anthony', 'Betty', 'Camie']
function addName(name, callback){
setTimeout(function(){
names.append(name)
callback()
}, 200)
}
function getNames(){
setTimeout(function(){
console.log(names)
}, 100)
}
addName('Daniel', getNames)
Example 4: javascript callback function
const message = function() {
console.log("This message is shown after 3 seconds");
}
setTimeout(message, 3000);
Example 5: callback functions javascript
function isOddNumber(number) {
return number % 2;
}Code language: JavaScript (javascript)