When the callback function delivers a promise, promise chaining occurs. It allows you to chain on another promise and then conduct a function when the second promise is completed. Catch can still be used to deal with any problems that arise along the process.
Promises are the most straightforward way to handle asynchronous actions. They are more efficient than callbacks and events in handling multiple asynchronous operations and handling errors.
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VAISHNAVI RAJESH CHALKE
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