Submodule 12.1: JavaScript Functions
Return
Return is another important statement of functions. The return does what its name suggests, it returns a value (number, Boolean, string). An example of the return usage is:
function myFuncname (myFirstnum, mySecondnum) {
return myFirstnum + mySecondnum;
}
// here we call the function and assign it to a variable
var sum = myFuncname(2,4);
// you can use console.log to see the result of the return statement
console.log (sum);
Note that the parameters (myFirstnum, mySecondnum) are what “informs” the function that it is going to receive two arguments, which in this case are 2 and 4. If instead of two arguments we had written one or more than two, the console will have given us an error message.
Exercise
Follow the next link. Right-click, select inspect and view the resunt in the Console tab. Next click the "Sources" tab and click the HTML file to see the code: