Breaking News: Grepper is joining You.com. Read the official announcement!

what is synchronous and asynchronous in javascript

Add Answer

Mystic Dev answered on March 6, 2022 Popularity 10/10 Helpfulness 3/10

answer what is synchronous and asynchronous in javascript

related async sync Synchronous Asynchronous

related javascript synchronous and asynchronous list

what is synchronous and asynchronous in javascript

Comment

Synchronous: In synchronous operations tasks are performed one at a time and only when one 
is completed, the following is unblocked. In other words, you need to wait for a
task to finish to move to the next one.

function getUsername(callback) {
    setTimeout(() => {
        console.log("Alextz")
        callback()
    }, 2000)
}

getUsername(() => console.log("getUsername callback called"))

Asynchronous:  In asynchronous operations, you can move to another task 
before the previous one finishes.


function getUser(callback) {
    setTimeout(() => {
        console.log("Alextz")
    }, 2000)

    // get executed even though the user has not printed yet
    callback()
}

getUser(() => console.log("getUser callback called"))

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: asynchronous javascript synchronous

Link to this answer
Share Copy Link

Contributed on Aug 26 2022

Mystic Dev

0 Answers Avg Quality 2/10

Closely Related Answers

async sync Synchronous Asynchronous

Comment

Synchronous Execution

My boss is a busy man. He tells me to write code. I tell him: Fine. I get started and he's watching me like a vulture, standing behind me, off my shoulder. I'm like "Dude, WTF: why don't you go and do something while I finish this?"

he's like: "No, I'm waiting right here until you finish." This is synchronous.

Asynchronous Execution

The boss tells me to do it, and rather than waiting right there for my work, the boss goes off and does other tasks. When I finish my job I simply report to my boss and say: "I'm DONE!" This is Asynchronous Execution.

(Take my advice: NEVER work with the boss behind you.)

Popularity 10/10 Helpfulness 4/10 Language whatever

Source: Grepper

Tags: asynchronous asynchrono

Link to this answer
Share Copy Link

Contributed on Sep 21 2022

410 Jinesh Vagawat

0 Answers Avg Quality 2/10

javascript synchronous and asynchronous list

Comment

function f1() {
  // some code
}
function f2() {
  // some code
}
function f3() {
  // some code
}

// Invoke the functions one by one
f1();
f2();
f3();

Popularity 10/10 Helpfulness 1/10 Language javascript

Source: www.freecodecamp.org

Tags: asynchronous asynchrono

Link to this answer
Share Copy Link

Contributed on Mar 06 2022

Crazy Cowfish

0 Answers Avg Quality 2/10

what is synchronous and asynchronous in javascript

Contents

More Related Answers

what is synchronous and asynchronous in javascript

Closely Related Answers

async sync Synchronous Asynchronous

javascript synchronous and asynchronous list

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.