JavaScript Function: Detecting Element Size Changes

This is a function in JavaScript that starts with a nested function called 'x'. The 'x' function takes in a parameter called 'x' and sets a variable 'd' to false. It then loops through an object called 'c' and sets a property on a variable called 't' with a concatenated string of 'x' and the current value in 'c'. It then appends 't' to an element called 'e'. It checks to see if the height and width of 't' are different from the values in an object called 'n' and 'a', respectively. If they are different, it sets 'r' to true. It then removes 't' from 'e' and sets 'd' to true if 'r' is true at any point in the loop. Finally, it returns the value of 'd'.