What is Promise in JavaScript | Lecture 29 | Resolve | Reject | Pending | #promises
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This lecture is dedicated for the solution of callback hell that is called promises . promise is an Object in JavaScript which has three states pending, resolve and reject. promise object makes the JS nature as Asynchronous at run time. by default JavaScript is synchronous in nature that means it works with the clock and it can not wait at any instruction. so if any instruction needed a time to for the execution it will execute next instruction. we multiple way handle this situation. promise is one of them. promise is an object which has multiple states like Resolve, Reject, Pending.
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