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Shallow Copy Shallow copy creates copy of an object. New copy has exact copy of values in original object. New copy refers to same reference as original object refers. Example: let obj = { name: "John", age: "25" }; let newObj = obj; newObj.n...
If you have been writing code more than "Hello World", you might have encountered with errors. It's not a pretty sight when program shows error. As a good developer you must know about error types. In this blog we will cover three most occurred erro...
Nullish coalescing operator is a logical operator. It returns right hand operand only if left hand operand is null or undefined. Syntax leftOperand ?? rightOperand Examples: const user = null ?? "user"; console.log(user); /* output: user */ const...
In JavaScript functions are treated as First-class Function when a function can be assigned as a value to variable or it can be passed as arguments to other function or can be returned by another function. Example: Assign a function to variable const...
