(×ªÔØ)javascript²Ù×÷Select±ê¼ÇÖÐoptions¼¯ºÏ
[ 2007-8-6 17:03:00 | By: ibrahim ]
javascript²Ù×÷Select±ê¼ÇÖÐoptions¼¯ºÏ
ÏÈÀ´¿´¿´options¼¯ºÏµÄÕ⼸¸ö·½·¨£º
options.add(option)·½·¨Ïò¼¯ºÏÀïÌí¼ÓÒ»Ïîoption¶ÔÏó£»
options.remove(index)·½·¨ÒƳýoptions¼¯ºÏÖеÄÖ¸¶¨Ï
options(index)»òoptions.item(index)¿ÉÒÔͨ¹ýË÷Òý»ñÈ¡options¼¯ºÏµÄÖ¸¶¨Ï
javascript´úÂëÈçÏ£º
var selectTag = null; //select񈬀
var OPTONLENGTH = 10; //ÿ´ÎÌî³äoptionÊý
var colls = []; //¶Ôselect±ê¼ÇoptionsµÄÒýÓÃ
window.onload = function(){
selectTag = document.getElementById("SelectBox"); //»ñÈ¡select±ê¼Ç
colls = selectTag.options; //»ñÈ¡ÒýÓÃ
//initSelectBox(); //×Ô³õʼ»¯select.options
};
//ʹÓÃËæ»úÊýÌî³äselect.options
function initSelectBox(){
var random = 0 ;
var optionItem = null;
var item = null;
if(colls.length > 0 && isClearOption()){
clearOptions(colls);
}
for(var i=0;i<OPTONLENGTH;i++){
&nb
Ïà¹ØÎĵµ£º
ÓÃJavaScriptÒþ²Ø¿Ø¼þµÄ·½·¨ÓÐÁ½ÖÖ£¬·Ö±ðÊÇͨ¹ýÉèÖÿؼþµÄstyleµÄ“display”ºÍ“visibility”ÊôÐÔ¡£µ±style.display="block"»òstyle.visibility="visible"ʱ¿Ø¼þ»ò¼û£¬µ±style.display = "none"»òstyle.visibility = "hidden"ʱ¿Ø¼þ²»¿É¼û¡£²»Í¬µÄÊÇ“display”²»µ«Òþ²Ø¿Ø¼þ£¬¶øÇÒ±»Òþ²ØµÄ¿ ......
1>zInherit£º
ËüÊÇÒ»¸ö×é¼þ£¬ÓÃÀ´¼Ì³Ð»ùÀàµÄËùÓÐÊôÐԺͷ½·¨¡£¸úÒÔǰ˵µ½µÄÔÐÍÁ´Ä£Ê½·Ç³£ÀàËÆ£¬Ö»²»¹ý±ÈÔÐ͸ü°²È«£¬Ò²ÎÞÐ뿼ÂDzÎÊýÎÊÌâ¡£ÏÂÃæ¿´¿´zInheritµÄÓ÷¨£º
¸Ã×é¼þÖÐÖ»ÓÐÁ½¸ö·½·¨£ºinheritfrom() instanceof()
func ......
ÿ´ÎÓõÄʱºò¶¼ÒªÕÒÒ»±é×ÊÁÏ£¬×ÁÄ¥Ò»±éÓï·¨£¬²»Ê¤Æä·³£¬ÖÕÓÚ϶¨¾öÐİÑËûÃǶ¼¼ÇÏÂÀ´£¬Ò»´ÎÐԸ㶨£¬ÓÀ¾øºó»¼£¡:)
Ò»¡¢Ê²Ã´ÊÇÕýÔò±í´ïʽ£¿
¼òµ¥µØËµ£¬¾ÍÊÇ»ùÓÚ×Ö·û´®µÄģʽƥÅ乤¾ß¡£Êµ¼ÊÓ¦ÓÃÖаüÀ¨×Ö·û´®µÄ²éÕÒ¡¢ÌáÈ¡¡¢Ìæ»»µÈµÈ¡£
¶þ¡¢»ù±¾Óï·¨
JavascriptÖеÄÕýÔò±í´ïʽµÄÐÎʽһ ......
Array×÷ΪJavaScriptµÄÒ»¸öÄÚÖöÔÏó£¬ÓÐ×ÅÇ¿´óµÄ¹¦ÄÜ£»Ïà¶ÔÓÚÆäËûÄÚÖöÔÏóÀ´Ëµ£¬ËûÓÐ×ÅÌØÊâµÄÓ÷¨£¬ÏÂÃæ¶Ô˵˵×Ô¼º¶ÔArrayµÄÓ÷¨µÄÒ»¸öС×ܽ᣺
1>ÓÃ;һ£ºÊý×é
Êý×é×î´ó´æ´¢Êý¾ÝΪËÄÊ®¶àÒÚ¸ö£¬Õâ¸ö¿Õ¼ä×ã¹»ÓÃÁË£¬ËùÒÔÊý×é¿ÉÒÔËæ±ãµÄÀ©ÈÝ¡£ÏÂÃæ¶Ô³£Óõ ......
¡¡javascriptº¯ÊýµÄ²ÎÊýÊÇ¿ÉÑ¡µÄ¡£ËüÓÐÏÂÃæ¼¸¸öÌØµã£º
¡¡¡¡£±.ÒòΪjavascript±¾ÉíÊÇÈõÀàÐÍ£¬ËùÒÔ£¬ËüµÄº¯Êý²ÎÊýҲûÓÐÀàÐͼì²éºÍÀàÐÍÏÞ¶¨£¬Ò»Çж¼Òª¿¿±à³ÌÕß×Ô¼ºÈ¥½øÐмì²é¡£
¡¡¡¡£².²ÎÊý¸öÊý²»¶¨¡£¾¡¹ÜÄãÒ²ÔÚÔÚº¯ÊýÉùÃ÷ʱ£¬ÓУ³¸ö²ÎÊý£¬¶øÔÚʵ¼ÊµÄʹÓÃÖУ¬Äã¿ÉÒÔ´«ÈÎÒâ¸ö²ÎÊý¸øÕâ¸öº¯Êý¡£ËüµÄʶ±ð½ö½öÊÇÒÀ¿¿º¯ÊýÃû£¬ÕâÓ ......