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JavaScript

  1. Introduction

    The Language

  2. Starting
  3. Variables
  4. Operators
  5. Control and Loops
  6. Functions
  7. Predefined Functions
  8. Events

    Objects

  9. Object Creation and Use
  10. Object Hierarchy

    Independent Objects

  11. Array Object
  12. Date Object
  13. Math Object
  14. Number and Boolean Object
  15. String Object

    Main Object

  16. Navigator Object

    Navigator Objects

  17. Window Object
  18. MimeType Object
  19. Plugin Object

    Window Sub Objects

  20. Document Object
  21. Location Object
  22. History Object
  23. Frame Object

    Document Sub Objects

  24. Anchor Object
  25. Applet Object
  26. Area Object
  27. Form Object
  28. Image Object
  29. Layer Object
  30. Link Object

    Form Sub Objects

  31. Button Object
  32. Checkbox Object
  33. FileUpload Object
  34. Hidden Object
  35. Option Object
  36. Password Object
  37. Radio Object
  38. Reset Object
  39. Select Object
  40. Submit Object
  41. Text Object
  42. Textarea Object

    More

  43. Handling Cookies
  44. Style Attributes

    Examples

  45. Simple Examples
  46. Handling Form Input
  47. Individual Hit Counter
  48. Redirecting based on Cookies

    Appendices

  49. Terms
  50. Credits

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JavaScript Option Object

The JavaScript Option object is a property of the form object. It is one of several options in a selection box. It appears inside a select box as follows: 

<SELECT NAME="state" SIZE=0>
	<OPTION VALUE="0">
	<OPTION VALUE="1">AL
	<OPTION VALUE="2">AK
	<OPTION VALUE="3">AR
</SELECT>

It looks like:

Properties

  • defaultSelected - Is a boolean value determining whether the option is selected by default. Read only.
  • index - The index of the option in the list of selections. Read only.
  • selected - Determines if the option is currently selected. This boolean value is read/write.
  • text - The text used to describe the option.
  • value - The value sent to the server if the option was selected.
  • prototype - Used to create additional properties.

Methods

  • blur()- Remove the focus from the option.
  • focus() - Give the focus to the option.

Events

  • onBlur
  • onChange
  • onFocus