Using Strings and Variables in a JavaScript Function with The Computer Gal

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This is a simple JavaScript exercise that will show you the difference between working with a "hardcoded value" and using a variable.

Create an HTML file called JavaScriptString.html
Type this inside the <body> tag.
  <script language="JavaScript">
    alert("Hello");
   </script>
</body>
Take out the " " around Hello. Open the file in both IE and Mozilla.
Above the alert() line, type var Message = "Hello".
Change alert ("Hello") to alert(Message);. Open again in your browsers.

NOTES:

A word or a group of words with " " is called a String.
alert() is a function. It requires a string as a parameter or argument.
When you removed the " " around Hello, you changed the argument from a string to a variable, but there was no variable defined. So, JavaScript couldn't do what you expected.
var word; is called declaring a variable. You are telling the computer to reserve some memory space that you will fill.
var Message ="Hello"; is defining a variable. You are placing a value into the memory space you declared (set aside) earlier.