Just Finished Array 101

What are arrays? Array is an object ,as we know that everything is object in Javascipt. If your programming background is strongly typed language for ex- python ,java and c, you think of arrays as sequential chunks of memory that house collections of items of the same type,where each chunk of memory is of fixed size and has an associated index through which you can easily access it. But as with many things in JavaScript, arrays come with a twist: 1-Iterating with for..in: Using for..in on arrays is dangerous because it iterates over array indices and any custom properties added to the prototype, which can cause issues if Array.prototype is extended. Better way to iterate a array: Use the for of loop: const colors = ['red', 'green', 'blue']; for(const web of colors){ console.log(web); } Why for in loop not recommended for arrays. 2-Shallow Copying Issues: When cloning arrays, objects nested inside are still passed by reference. Modifying a nested object in the copy will mutate the origi