JavaScript

�� - JavaScript

�� :
1: �� 5
2: ��
3: ��
4: ��
5: ��
6: ��
7: CheckBoxes
8: ��
9: ��
10: �� onChange
11: �� 5

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�� 5

�� 9: ��.

�� , �� . �� : �� (pulldown) �� (list select). �� :

Pulldown: List:

�� , �� . ��, �- HTML �� :

<select name="pulldown_1" size=1> <option>probiscus <option>spider <option>lemur <option>chimp <option>gorilla <option>orangutan </select>

�� , �� : pulldown_1, �� . �� .

��, �� , �� . �� - pulldown, �� :

window.document.form_1.pulldown_1.options[1].text = 'new_text';

�� . �� , (�� ) �� . �� - pulldown �� . �� -pulldown �� "*thau*" (�� ).

�� , �� : �� (select Index). �� , �� . �� , �� (�� ), �� . ��, �� 0. �� :

<a href="#" onClick="alert('index is: ' + window.document.form_1.list_1.selectedIndex); return false;">check the index</a>

�� : form_1, �� : list_1. �� :

window.document.form_1.list_1.selectedIndex

�� "�:

window.document/form_1/list_1/selectedIndex=1;

�� list_1. �� , �� :

var the_select = window.document.form_1.list_1; var the_index = the_select.selectedIndex; var the_selected = the_select.options[the_index].text;

�� . ��, �� ? �� . �� .

�� , �� (handler) �: ()onChange. �� . �� onChange �� .


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