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Javascript²Ù×÷select¿Ø¼þ´óÈ«

1ÅжÏselectÑ¡ÏîÖРÊÇ·ñ´æÔÚValue="paraValue"µÄItem 
 2ÏòselectÑ¡ÏîÖР¼ÓÈëÒ»¸öItem 
 3´ÓselectÑ¡ÏîÖРɾ³ýÒ»¸öItem 
 4ɾ³ýselectÖÐÑ¡ÖеÄÏî 
 5ÐÞ¸ÄselectÑ¡ÏîÖРvalue="paraValue"µÄtextΪ"paraText" 
 6ÉèÖÃselectÖÐtext="paraText"µÄµÚÒ»¸öItemΪѡÖР
 7ÉèÖÃselectÖÐvalue="paraValue"µÄItemΪѡÖР
 8µÃµ½selectµÄµ±Ç°Ñ¡ÖÐÏîµÄvalue 
 9µÃµ½selectµÄµ±Ç°Ñ¡ÖÐÏîµÄtext 
10µÃµ½selectµÄµ±Ç°Ñ¡ÖÐÏîµÄIndex 
11Çå¿ÕselectµÄÏî 
 // 1.ÅжÏselectÑ¡ÏîÖÐ ÊÇ·ñ´æÔÚValue="paraValue"µÄItem
function jsSelectIsExitItem(objSelect, objItemValue) {
var isExit = false;
for (var i = 0; i < objSelect.options.length; i++) {
if (objSelect.options[i].value == objItemValue) {
isExit = true;
break;
}
}
return isExit;
}

// 2.ÏòselectÑ¡ÏîÖÐ ¼ÓÈëÒ»¸öItem
function jsAddItemToSelect(objSelect, objItemText, objItemValue) {
//ÅжÏÊÇ·ñ´æÔÚ
if (jsSelectIsExitItem(objSelect, objItemValue)) {
alert("¸ÃItemµÄValueÖµÒѾ­´æÔÚ");
} else {
var varItem = new Option(objItemText, objItemValue);
objSelect.options.add(varItem);
alert("³É¹¦¼ÓÈë");
}
}

// 3.´ÓselectÑ¡ÏîÖРɾ³ýÒ»¸öItem
function jsRemoveItemfromSelect(objSelect, objItemValue) {
//ÅжÏÊÇ·ñ´æÔÚ
if (jsSelectIsExitItem(objSelect, objItemValue)) {
for (var i = 0; i < objSelect.options.length; i++) {
if (objSelect.options[i].value == objItemValue) {
objSelect.options.remove(i);
break;
}
}
alert("³É¹¦É¾³ý");
} else {
alert("¸ÃselectÖÐ ²»´æÔÚ¸


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Javascript¼òÒ×½Ì³Ì 1

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2. Ëüʵ¼ÊÖ¸functionËù¹ØÁªµÄ¶ÔÏó£¬Èç¹ûfunctionûÓйØÁªÈκζÔÏó£¬ÔòthisÊÇGlobal¶ÔÏó
var msg = 'I am global';
function showMsg(){
alert(this.msg);
};
function nestedShowMsg (){
var nested = function(){
alert(this.msg);
};
nested();  ......

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Ô­ÎÄ£ºÁõÎä|JavascriptÔõôÔÚÁ½¸ö´°ÌåÖ®¼ä´«Öµ  
ÖÚËùÖÜÖªwindow.open() º¯Êý¿ÉÒÔÓÃÀ´´ò¿ªÒ»¸öд°¿Ú£¬ÄÇôÈçºÎÔÚ×Ó´°ÌåÖÐÏò¸¸´°Ì崫ֵĨ£¬Æäʵͨ¹ýwindow.opener¼´¿É»ñÈ¡¸¸´°ÌåµÄÒýÓá£
ÈçÎÒÃÇн¨´°ÌåFatherPage.htm:
XML-Code:
<script type="text/javascript">
function OpenChildWindow()
{ ......

javascriptÐÔÄÜÓÅ»¯

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ÓÃJavascript»ñÈ¡Ò³ÃæÔªËØµÄλÖÃ

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½â¾öFirefox ÏÂF5ºÍIEÏÂF5 ²»Ò»ÖµÄjavascript ½Å±¾.

½â¾öFirefox ÏÂF5ºÍIEÏÂF5 ²»Ò»ÖµÄjavascript ½Å±¾.
var check=function(e)
 {
  e=e||window.event;
  //alert(e.which||e.keyCode);
  if((e.which||e.keyCode)==116)
  {
   if(e.preventDefault)
   { e.preventDefault();}
&nb ......
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