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While designing web applications, we need to optimize for certain scenarios, where we don't want to call a function repeatedly multiple times. An...
We may encounter some scenarios where we have to pause the execution of a function for some fixed amount of time. Many programming languages already...
Question: We've the following function greet, we need to find out how many times this function has been called. function greet(){ console.log("Hello...
We all have heard that using index as key in a react list is an anti-pattern and should be avoided.The answer to this lies in the concepts of: ...
undefined It's a primitive data type in Javascript. Any variable which has been declared but has not been assigned any value has the value undefined....
