This content originally appeared on DEV Community and was authored by Kavya S
What is Synchronous?
In synchronous,each line of code executes line by line.
that means,each line of code waits for the previous one to execute
Example:
console.log("Hi")
console.log("Welcome")
Output
Hi
Welcome
What is Asynchronous?
- In asynchronous,a task can be initiated and while waiting for it to complete, other task can be proceed.
- It improves performance
Example:
console.log("Task1")
setTimeOut(()=>{
console.log("Task2")
},2000);
console.log("Task3")
Output
Task1
Task3
Task2
This content originally appeared on DEV Community and was authored by Kavya S
Print
Share
Comment
Cite
Upload
Translate
Updates
There are no updates yet.
Click the Upload button above to add an update.
APA
MLA
Kavya S | Sciencx (2025-09-11T01:14:07+00:00) Synchronous,Asynchronous in JavaScript. Retrieved from https://www.scien.cx/2025/09/11/synchronousasynchronous-in-javascript/
" » Synchronous,Asynchronous in JavaScript." Kavya S | Sciencx - Thursday September 11, 2025, https://www.scien.cx/2025/09/11/synchronousasynchronous-in-javascript/
HARVARDKavya S | Sciencx Thursday September 11, 2025 » Synchronous,Asynchronous in JavaScript., viewed ,<https://www.scien.cx/2025/09/11/synchronousasynchronous-in-javascript/>
VANCOUVERKavya S | Sciencx - » Synchronous,Asynchronous in JavaScript. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2025/09/11/synchronousasynchronous-in-javascript/
CHICAGO" » Synchronous,Asynchronous in JavaScript." Kavya S | Sciencx - Accessed . https://www.scien.cx/2025/09/11/synchronousasynchronous-in-javascript/
IEEE" » Synchronous,Asynchronous in JavaScript." Kavya S | Sciencx [Online]. Available: https://www.scien.cx/2025/09/11/synchronousasynchronous-in-javascript/. [Accessed: ]
rf:citation » Synchronous,Asynchronous in JavaScript | Kavya S | Sciencx | https://www.scien.cx/2025/09/11/synchronousasynchronous-in-javascript/ |
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.