JavaScript for profesors

One of the most important parts of JavaScript are functions. Without functions JavaScript would be quite useless. A function is a "block" of code, or a group of commands. These commands go between two curly brackets ( {} ). Lets see an example of one: 

<Script language="JavaScript">
function my_function(){
alert("Hi");
}
</Script>

Here I created a function called my_function which will display "Hi" when used. The parenthesis next the name of the function are used to send any information the function might need, since this one doesn't need any extra information, I didn't write anything between them. Lets see an example that uses the parenthesis: 

<Script language="JavaScript">
function my_function(text){
alert(text);
}
</Script>

Now to use this function, you must send it some information, whatever you send it will be displayed.

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