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How To Develop a HTML page to add and remove item from list box?
Wiki User
∙ 10y ago
<HTML xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/HTML; charset=iso-8859-1" />
<title>Interchange/Swap List Items</title>
<script type="text/javaScript">
function moveToRightOrLeft(side){
var listLeft=document.getElementById('selectLeft');
var listRight=document.getElementById('selectRight');
if(side==1){
if(listLeft.options.length==0){
alert('You have already moved all countries to Right');
return false;
}else{
var selectedCountry=listLeft.options.selectedIndex;
move(listRight,listLeft.options[selectedCountry].value,listLeft.options[selectedCountry].text);
listLeft.remove(selectedCountry);
if(listLeft.options.length>0){
listLeft.options[0].selected=true;
}
}
}else if(side==2){
if(listRight.options.length==0){
alert('You have already moved all countries to Left');
return false;
}else{
var selectedCountry=listRight.options.selectedIndex;
move(listLeft,listRight.options[selectedCountry].value,listRight.options[selectedCountry].text);
listRight.remove(selectedCountry);
if(listRight.options.length>0){
listRight.options[0].selected=true;
}
}
}
}
function move(listBoxTo,optionValue,optionDisplayText){
var newOption = document.createElement("option");
newOption.value = optionValue;
newOption.text = optionDisplayText;
listBoxTo.add(newOption, null);
return true;
}
</script>
</head>
<body>
<div>
<ul>
<li><table border="0">
<tr>
<td rowspan="3" align="right"><label>
<select name="selectLeft" size="10" id="selectLeft">
<option value="AS" selected="selected">American Samoa</option>
<option value="AD">Andorra</option>
<option value="AO">Angola</option>
<option value="AI">Anguilla</option>
<option value="AQ">Antarctica</option>
<option value="AG">Antigua And Barbuda</option>
<option value="AR">Argentina</option>
<option value="AM">Armenia</option>
</select>
</label></td>
<td align="left"> </td>
<td align="left"> </td>
<td rowspan="3" align="left"><select name="selectRight" size="10" id="selectRight">
<option value="AF" selected="selected">Afghanistan</option>
<option value="AX">Ã…Land Islands</option>
<option value="AL">Albania</option>
<option value="DZ">Algeria</option>
</select></td>
</tr>
<tr>
<td align="left"> </td>
<td align="left"><label>
<input name="btnRight" type="button" id="btnRight" value=">>" onClick="javaScript:moveToRightOrLeft(1);">
</label></td>
</tr>
<tr>
<td align="left"> </td>
<td align="left"><label>
<input name="btnLeft" type="button" id="btnLeft" value="<<" onClick="javaScript:moveToRightOrLeft(2);">
</label></td>
</tr>
<tr>
<td> </td>
<td align="left"> </td>
<td align="left"> </td>
<td align="left"> </td>
</tr>
</table>
</li>
</ul>
</div>
</body>
</HTML>
Wiki User
∙ 10y ago
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