When you write JavaScript applications, you will write a lot of functions. Functions in JavaScript are like methods in C#. You will learn various ways to write JavaScript functions. Here is one of the more common ways…

function giveBirth() {
    // do some stuff

The aforementioned code does not run the function. It simply declares it. As in writing functions, there are many ways to execute functions. One of the more common ways is…


Notice the parentheses? This syntax allows you to pass data to a function and use it within the function. This is called a parameter or argument. There are some semantic differences in these terms, but as long as you know you can pass data to a function and use it within the function, you are good.

function giveBirth( baby ) {
    console.log( baby );
giveBirth( ‘Baby Monkey’ ); //Outputs “Baby Monkey” to the console.

You can have multiple arguments…

function giveBirth( baby, gender ) {
    console.log( baby );
    console.log( gender );
giveBirth( ‘Baby Monkey’,  ‘female’ ); //Outputs “‘Baby Monkey” and  “female” to the console.

Happy Coding!

Clay Hess

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