What is the purpose of the map() function in JavaScript? The map() function is used to iterate over an array and apply a transformation or computation on each element, returning a new array with the transformed elements ( Built In ) . What is the difference between splice() and slice() ? splice() modifies an array by adding, removing, or replacing elements, while slice() creates a new array containing a portion of the original array without modifying it ( Built In ) . How do you remove duplicates from an array in JavaScript? You can use the Set object or the filter() method along with indexOf() to remove duplicates from an array ( Built In ) . What are closures in JavaScript? Closures are functions that have access to variables from another function’s scope. This happens due to the function being defined within the other function, allowing access to its local variables ( Built In ) . Explain the difference between == and === . == checks for equality of value...