Difference between revisions of "JavaScript Variable Types"
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<td>number<td>1, -31, 0.023<td>The ''number'' variable holds any type of number, either an integer or a real number.</td> | <td>number<td>1, -31, 0.023<td>The ''number'' variable holds any type of number, either an integer or a real number.</td> | ||
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| + | <td>string<td>"Hello World!"<td>The ''string'' variable type stores a string of characters, typically making up either a word or sentence. ''string'' variables can also be assigned empty strings. | ||
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| + | <td>function<td>any user defined function<td>A function is one of the basic building blocks of most programming languages including JavaScript. Functions are used to break up a script into clean, reusable modules. Functions are covered in a later chapter.</td> | ||
</table> | </table> | ||
Revision as of 20:00, 11 April 2007
JavaScript supports five different types of variable. These variable types are outlined in the following table together with a brief description of each type:
| Type | Example | Description |
|---|---|---|
| boolean | true, false | The boolean variable is used to record a value of either true or false. Internally this is essentially stored as 1 for true and 0 for false. |
| number | 1, -31, 0.023 | The number variable holds any type of number, either an integer or a real number. |
| string | "Hello World!" | The string variable type stores a string of characters, typically making up either a word or sentence. string variables can also be assigned empty strings. |
| function | any user defined function | A function is one of the basic building blocks of most programming languages including JavaScript. Functions are used to break up a script into clean, reusable modules. Functions are covered in a later chapter. |
