'10 JavaScript Interview Questions and Answers to Help you Land Your Next Role' javascript javascriptdevelopment
Q8. What are Closures? Write a simple example of closure.With the help of closure, we can make a global variable=> local or private. In other words, you can say that closures are the ability of a function to remember the variables declared in the outer scope.
So closures give the ability to a function to remember the outside variables even after the execution of the function. Let us explain with an example. function closureExample { var count=1; function checkValue { console.log; } count++; return checkValue; } var counter=closureExample; counter; // result will be 2is available to the inner functionQ9. What is IIFE in JS and where is it used?. This is a function expression that is executed as soon as it is created. That means we don’t need to call it after creation, it will be executed by default.
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