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Move the left list of JS learning notes to the right list

Source: Internet
Author: User
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Functions:
1. Add the content in the drop-down box on the left to the drop-down box on the right. You can select multiple moves and remove the drop-down box objects on the right;
2. Supports moving up and down projects in the list;
3. as follows:


 
Html code
<HTML>
<HEAD>
<TITLE> select the drop-down menu </TITLE>
<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312">
<Meta name = "Description" CONTENT = "Power by hill">
</HEAD>
<BODY>
<P> select one or more items, click add or remove (shift or ctrl to select multiple items), or double-click the selected items to add or remove them. </P>
<Form method = "post" name = "myform">
<Table border = "0" width = "300">
<Tr>
& Lt; td width = "40%" & gt;
<Select style = "WIDTH: 100%" multiple name = "list1" size = "12" ondblclick = "moveOption (document. myform. list1, document. myform. list2)">
<Option value = "Beijing"> Beijing </option>
<Option value = "Shanghai"> Shanghai </option>
<Option value = "Shandong"> Shandong </option>
<Option value = "Anhui"> Anhui </option>
<Option value = "Chongqing"> Chongqing </option>
<Option value = "Fujian"> Fujian </option>
<Option value = "Gansu"> Gansu </option>
<Option value = "Guangdong"> Guangdong </option>
<Option value = "Guangxi"> Guangxi </option>
<Option value = "Guizhou"> Guizhou </option>
<Option value = "Hainan"> Hainan </option>
<Option value = "Hebei"> Hebei </option>
<Option value = "Heilongjiang"> Heilongjiang </option>
</Select>
</Td>
& Lt; td width = "20%" align = "center" & gt;
<Input type = "button" value = "add" onclick = "moveOption (document. myform. list1, document. myform. list2)"> <br/>
<Br/>
<Input type = "button" value = "delete" onclick = "moveOption (document. myform. list2, document. myform. list1)">
</Td>
& Lt; td width = "40%" & gt;
<Select style = "WIDTH: 100%" multiple name = "list2" size = "12" ondblclick = "moveOption (document. myform. list2, document. myform. list1)">
</Select>
</Td>
<Td>
<Button onclick = "changepos (list2,-1)" type = "button"> move up </button>
<Br/>
<Button onclick = "changepos (list2, 1)" type = "button"> move down </button>
</Td>
</Tr>
</Table>
Value: <input type = "text" name = "city" size = "40">
</Form>
<Script language = "JavaScript">
<! --
Function moveOption (e1, e2 ){
Try {
For (var I = 0; I <e1.options. length; I ++ ){
If (e1.options [I]. selected ){
Var e = e1.options [I];
E2.options. add (new Option (e. text, e. value ));
E1.remove (I );
Ii = I-1
}
}
Document. myform. city. value = getvalue (document. myform. list2 );
}
Catch (e ){}
}
Function getvalue (geto ){
Var allvalue = "";
For (var I = 0; I <geto. options. length; I ++ ){
Allvalue + = geto. options [I]. value + ",";
}
Return allvalue;
}
Function changepos (obj, index)
{
If (index =-1 ){
If (obj. selectedIndex> 0 ){
Obj. options (obj. selectedIndex). swapNode (obj. options (obj. selectedIndex-1 ))
}
}
Else if (index = 1 ){
If (obj. selectedIndex <obj. options. length-1 ){
Obj. options (obj. selectedIndex). swapNode (obj. options (obj. selectedIndex + 1 ))
}
}
}
// -->
</Script>
</BODY>
</HTML>

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Related Keywords:
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