JavaScript/Asynchronous-JavaScript/Callbacks1.js at master · lgope/JavaScript

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setTimeout(() => {

console.log('Two seconds are up!');

}, 2000);

const names = ['Lakshman', 'Gope', 'Proddut'];

const shortNames = names.filter((name) => {

return name.length <= 4;

});

const geocode = (address, callback) => {

setTimeout(() => {

const data = {

latitude: 0,

longitude: 0

}

callback(data);

}, 2000);

};

geocode('Dhaka', (data) => {

console.log(data);

});

// Challenge

// Goal: Mess around with the callback pattern

// 1. Define an add function that accepts the correct arguments

// 2. Use setTimeout to simulate a 2 second delay

// 3. After 2 seconds are up, call the callback function with the sum

// 4. Test your work!

const add = (a, b, callback) => {

setTimeout(() => {

callback(a + b);

}, 2000);

}

add(1, 4, (sum) => {

console.log(sum) // Should print: 5

})