WebQuest
Variables and Functions
Task
Variables are containers for storing data values when using JavaScript. There are different types of data to consider:
- String Data: Characters that are unchangeable over time (For example: var greeting='Go Titans!!!';)
- Number Data: Represents numeric values (For example: var myAge=16;)
- Boolean: Represents logical values such as true or false (For example: var skyIsBlue=true;)
- Undefined: Represents a value that hasn't been defined (For example: var notDefinedYet;)
- Null: Represents an empty value (For example: goodPickupLines=null;)
Rules for Variable names:
- Begin with letters, $ or _
- Should only contain letters, numbers, $ and _
- Variables are case sensitive
- Choose names that maximize clarity and meaning
- Use camelCase for multiple words: Capitalize first letter of each word after the first one (For example: southgateAndersonTitans)
- Be consistent with your file naming conventions!
Rename the following variables in a way that is acceptable:
- var 2coolForSchool
- southgate_anderson_titans
- titansRule!
Variables can store the result of any expression. For example:
var x=2+2;
var y=x*3;
var name='Mrs. Slivnick';
var greeting='Hello'+name;
var title='Web Design teacher';
var description=name+'is my'+title;
*/Mrs. Slivnick is my Web Design teacher*/
Don't forget: Adding comments to your code will allow you to keep track of your variables in a way that is clear and easy for you to understand. Your comments are only read by you and not the computer, so they can be customized for your own clarity.
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