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Jquery implements the effect of the list box

Source: Internet
Author: User
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In java web development, list boxes are often used, especially in system permission management, as shown in. To achieve the above effect, see the following source code:
The source code is as follows:
<Html>
<Head>
<Title> select all results </title>
<Script src = "jquery. js"> </script>
</Head>
<Body background = "3.png">
<Div id = "left" style = "float: left; width: 200px">
<Select onDblClick = "moveright ()" id = "list1" size = "10" style = "width: 150px"> // The data here can be changed to dynamic
<Option id = "1"> Item 1 </option>
<Option id = "2"> option 2 </option>
<Option> Item 3 </option>
<Option> Item 1 </option>
<Option> option 2 </option>
<Option> Item 3 </option>
<Option> Item 4 </option>
<Option> Item 5 </option>
<Option> Item 6 </option>
<Option> Item 7 </option>
<Option> Item 8 </option>
<Option> Item 9 </option>
<Option> Item 10 </option>
</Select>
</Div>
<Div id = "right" style = "float: left">
<Select onDblClick = "moveleft ()" size = "10" id = "list2" style = "width: 150px">
</Select>
</Div>
// Note that the script must be written in the body. Otherwise, an error will be reported.
<Script>
Var L = $ ("# list1 ");
Var R = $ ("# list2 ");
Function moveleft (){
Var move = new Array ();
$ ("# List2> option: selected"). each (function (){
Var a1 = $ (this );
Var a1 _ = (this).html ();
Var a2 = $ ("# list1> option ");
Var a2 _ = $ ("# list1> option" pai.html ();
If (a2 _ = null ){
$ (This). remove (). appendTo (L); // move to the left when the left side is empty.
} Else {
A2.each (function (){
If(((this).html () = a1 _){
Move. push (a1 _);
} Else {

}
});
If (move [0] = a1 _){
A1.remove ();
} Else {
A1.remove (). appendTo (L );
}
};
});
}
Function moveright (){
Var move = new Array ();
$ ("# List1> option: selected"). each (function (){
Var a1 = $ (this );
Var a1 _ = (this).html ();
Var a2 = $ ("# list2> option ");
Var a2 _ = $ ("# list2> option" pai.html ();
If (a2 _ = null ){
$ (This). remove (). appendTo (R );
} Else {
A2.each (function (){
If(((this).html () = a1 _){
Move. push (a1 _);
} Else {

}
});
If (move [0] = a1 _){
 
} Else {
A1.remove (). appendTo (R );
}
};
 
});
}
</Script>
</Body>
</Html>

 

 

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