function Content(src)
{
// src :select对象
var srcindex=src.selectedIndex; //当前选中的选项
var srclength=src.length; //select对象选项长度,有几个项选
// 删除...
if(srcindex>0){
src.options[srcindex]=null;
src.selectedIndex=-1;
}
// 新增
var myText = "测试名称";
var myValue = "测试值";
src.options[srclength]=new Option(myText ,srclength);
src.options[srclength].value=myValue ;
}
{
// src :select对象
var srcindex=src.selectedIndex; //当前选中的选项
var srclength=src.length; //select对象选项长度,有几个项选
// 删除...
if(srcindex>0){
src.options[srcindex]=null;
src.selectedIndex=-1;
}
// 新增
var myText = "测试名称";
var myValue = "测试值";
src.options[srclength]=new Option(myText ,srclength);
src.options[srclength].value=myValue ;
}
// 添加选项
function addOption(pos){
var objSelect = document.myForm.mySelect;
// 取得字段值
var strName = document.myForm.myOptionName.value;
var strValue = document.myForm.myOptionValue.value;
// 建立Option对象
var objOption = new Option(strName,strValue);
if (pos == -1 & pos > objSelect.options.length)
objSelect.options[objSelect.options.length] = objOption;
else
objSelect.add(objOption, pos);
}
// 删除选项
function deleteOption(type){
var objSelect = document.myForm.mySelect;
if(objSelect.options.length>0){
if (type == true)
objSelect.options[objSelect.selectedIndex] = null;
else
objSelect.remove(objSelect.selectedIndex);
}
else
alert("已经没有选项可以删除了!")
}
// 显示选项信息
function showOption(objForm){
var objSelect = objForm.mySelect;
if(objSelect.options.length>0){
document.all.myOptionName.value = objSelect.options[objSelect.selectedIndex].text;
document.all.myOptionValue.value = objSelect.options[objSelect.selectedIndex].value;
}
else
alert("没有选项可以显示!")
}
</script>
<form name="myForm">
<select name="mySelect">
<option value="value1" Selected>HTML</option>
<option value="value2">JavaScript</option>
<option value="value3">VBScript</option>
</select>
<input type="button" onclick="showOption(this.form)" value="显示">
<input type="button" onclick="deleteOption(true)" value="删除">
<input type="button" onclick="deleteOption(false)" value="Remove方法"><br><br>
选项名称 : <input type="text" name="myOptionName" value="CSS"><br>
选项的值 : <input type="text" name="myOptionValue" value="value4">
<input type="button" onclick="addOption(-1)" value="添加">
<input type="button" onclick="addOption(0)" value="插入">
</form>
<SCRIPT>
function fnAppend(){
var oNewNode = document.createElement("option");
abc.appendChild(oNewNode);
oNewNode.innerText="2";
}
</SCRIPT>
<BODY><select id="abc"><option>1</option></select>
<INPUT
TYPE = "button"
VALUE = "Append Child"
onclick = "fnAppend()">
</BODY>
function CheckOptions(select_obj,ID,value)
{var maxID=select_obj.length;
if (maxID>0)
{ for (var i=0;i<maxID;i++)
{if (select_obj.options[i].value==ID)
{ select_obj.selectedIndex =i;
return false;
}
}
}
var the_option= new Option(value,ID);
select_obj.add(the_option);
select_obj.selectedIndex = select_obj.options.length-1;
}