Day 024 - Arithmetic Operators

In Day 021, you used an integer to select a specific li.

With an integer it's possible to use 'Arithmetic Operators'.

var addition = 5 + 5;
$('span.addition').text(addition);

In the above code, you set a variable (I'll cover this in more depth in a further day).

The variable will be equal to the result of the 5 + 5. You then call jQuery, look for a .span element in the DOM with a class of addition. Then use the .text method to add the variable answer to that element.

Similarly it's possible to do subtraction, multiplication and division.

Check out this demo for more examples.