Select.options.length : Select « Form « JavaScript Tutorial

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JavaScript Tutorial » Form » Select

10. 12. 12. Select.options.length

The length property returns the number of options in that instance of a select box.


<html>  

    <form name="myForm">

      <select name="mySelect" onChange='alert(mySelect.options.length)'>

        <option value=A>AA</option>

        <option value=B>BB</option>

        <option value=C>CC</option>

        <option value=D>DD</option>

      </select>

    </form>

</html>

10. 12. Select
	10. 12. 1.	Select
	10. 12. 2.	Select.blur()
	10. 12. 3.	Select.focus()
	10. 12. 4.	Select.form
	10. 12. 5.	Select.handleEvent()
	10. 12. 6.	Select.length
	10. 12. 7.	Select.name
	10. 12. 8.	Select.onBlur
	10. 12. 9.	Select.onChange
	10. 12. 10.	Select.onFocus
	10. 12. 11.	Select.options
	10. 12. 12.	Select.options.length
	10. 12. 13.	Select.options.selectedIndex
	10. 12. 14.	Select.options.value
	10. 12. 15.	Select.selectedIndex
	10. 12. 16.	Select.type
	10. 12. 17.	Triggering a Value Change from a Pop-Up Menu
	10. 12. 18.	Grouped selection control on change event

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