How to use.then( ) Method in Javascript
- In this code example, we have created a variable createPromise which is a promise having two callbacks provided by javascript.
- resolve: when the promise resolves successfully.
- reject: when the promise is rejected for any reason.
- Then creating setTimeout has a callback function that will run after two seconds.
- By using the .then( ) method access the value of the Promise.
Example: The code example shows how to access the value of a Promise in JavaScript using the .then method.
Javascript
console.log("wait for 2 seconds to get promise resolved")const createPromise = new Promise( (resolve, reject) => { setTimeout(function () { resolve( "the promise is resolved after 2 seconds"); }, 2000) });createPromise.then((promisedata) => { console.log("Promise is resolved successfully", promisedata)}) |
Output:
access the Value of a Promise in JavaScript Using .then Method
How to access the Value of a Promise in JavaScript
In this article, we will see how to access the value of Promise in JavaScript. The Promise is a feature of ES6 introduced in 2015. The concept of Promises is generally used when we want to work asynchronously.
The value of a Promise can be accessed in JavaScript using the following methods.
Table of Content
- Using .then( ) Method
- Using the Async/Await Method
Syntax:
let promise = new Promise((resolve, reject)=>{//enter the code})
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