Node.js depend on the asynchronous code to do the execution fast so having dependable callbacks is very crucial. Callback functions is called at the completion of any task. In node, code is dependent ...
Callback function wo function hai jo dusre function ke andar define kiya jata hai aur jab dusra function complete hota hai, tab ye call hota hai. Iska main purpose hai ki aap kisi operation ke ...
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