Add a function called add$($a$,$ b$).$ Return the sum of a and b$.$

Add a function called subtract$($a$,$ b$).$ Return a$-$b$.$

Add a function called sum$()$ with no parameters. Use the arguments and return a sum of all of the values passed to the function regardless of the number of arguments.

Add a function called setTitle$()$ that outputs the "Hello, this is Lab $2!"$ to the h$1$ element with id$=$"title".

Add a function called studentName$($name$)$ that outputs your full name to the div element with id$=$"student".

Add a variable to the page called secondsSinceLoad and give it a starting value of $0.$ Add an arrow function $($no curly brackets, no parenthesis, no function keyword$)$ called updateSeconds$().$ In the function, add $1$ to the value of secondsSinceLoad$.$ Display the current value of secondsSinceLoad in the HTML div provided with id$=$"seconds". The display must happen from in the function.

Call setTitle$()$ when the page loads. I have provided a page load event below. Put all of the functions that should be called when the page loads into that single function.

Call and output the results from add$(10,15)$; using document.writeln$()$ at the end of the body element.

Call and output the results from subtract$(45,10)$; using document.writeln$()$ at the end of the body element.

Call and output the results from sum$(5,10,20,30)$; using document.writeln$()$ at the end of the body element.

When the page loads, use setInterval$()$ to call updateSeconds$()$ every $1$ second.