twhat is a js promise
const promise1 = new Promise((resolve, reject) => {
setTimeout(() => {
resolve('foo');
}, 300);
});
promise1.then((value) => {
console.log(value);
// expected output: "foo"
});
console.log(promise1);
// expected output: [object Promise]what is promise in javascript
Promises make async javascript easier as they are easy to use and write than callbacks. Basically , promise is just an object , that gives us either success of async opertion or failue of async operationsCopyright © 2021 Codeinu
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