Define an array of numbers in Javascript: $5,10,$ and $7,$ You have to write two functians. The first function will add are $(+1)$ to each number in the array, While the second will subtract two $(-2)$ of each number in the array. Before doing any oparation on the numbers, chack if the number a less than $0.$ if is it$,$ do not subtract $-2.$

Suppose the span tag used to display the number in HTML code is like this:

please note that you connect use jQuery or any external library.

It is importent to explain each line of code in detail.