What Are Variables?
Variables are, simply stated, the contents of a temporary storage area in an application. This storage area holds information, usually inputted into the program by a user. In the previous examples, the values of the name attributes were variables.
For example, in a previous line of code you wrote, you defined an input field with the name attribute equal to username:
<input name="username" type="text" />
When users access this line of code in the application, they can input information. The application then saves this input information in a temporary storage area, using the name attribute as the name of the temporary storage area. In other words, a temporary storage area (a variable) called username holds the user’s inputted ...
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