Javascript controls the closure and expansion of the list through overflow

Source: Internet
Author: User

Javascript controls the closure and expansion of the list through overflow

This article describes how Javascript controls the closure and expansion of the list through overflow. Share it with you for your reference. The specific implementation method is as follows:

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<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN"

Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>

<Html xmlns = "http://www.w3.org/1999/xhtml">

<Head>

<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>

<Title> close and expand through the overflow control list </title>

<Style type = "text/css">

Div dl

{

Margin: 0;

Padding: 0;

Font-size: 14px;

}

# DivMain

{

Width: 500px;

Background-color: # 22477A;

Margin: 0 auto;

Margin-top: 30px;

}

Dl

{

Width: 200px;

Background: # A6BCE5;

Height: 14px;/* the same height as the font size */

Overflow: hidden;/* default overflow hidden */

}

Dt

{

Cursor: pointer;/* set the hand cursor */

Font-weight: bold;

Color: Green;

}

. Open

{

Height: pixel PX;

Overflow: visible;

}

. Close

{

Height: 14px;/* the same height as the font size */

Overflow: hidden;

}

</Style>

<Script type = "text/javascript">

Function DisplayList (){

Var dtNode = window. event. srcElement;

Var dlNode = dtNode. parentNode;

Var dlNodes = document. getElementsByTagName ("dl ");

For (var I = 0; I <dlNodes. length; I ++ ){

If (dlNodes [I] = dlNode) {// you can check whether the selected dl is used.

If (dlNodes [I]. className = "open "){

DlNodes [I]. className = "close ";

}

Else {

DlNodes [I]. className = "open ";

}

}

Else {

DlNodes [I]. className = "close ";

}

}

}

</Script>

</Head>

<Body>

<Div id = "divMain">

<Dl>

<Dt onclick = "DisplayList ()">

Star List 1

</Dt>

<Dd> Ronaldo </dd>

<Dd> Beckham </dd>

<Dd> Zidane </dd>

<Dd> Neymar </dd>

<Dd> Pattaya </dd>

<Dd> Messi </dd>

</Dl>

<Br/>

<Dl>

<Dt onclick = "DisplayList ()">

Star List 2

</Dt>

<Dd> Ronaldo </dd>

<Dd> Beckham </dd>

<Dd> Zidane </dd>

<Dd> Neymar </dd>

<Dd> Pattaya </dd>

<Dd> Messi </dd>

</Dl>

<Br/>

<Dl>

<Dt onclick = "DisplayList ()">

Star list 3

</Dt>

<Dd> Ronaldo </dd>

<Dd> Beckham </dd>

<Dd> Zidane </dd>

<Dd> Neymar </dd>

<Dd> Pattaya </dd>

<Dd> Messi </dd>

</Dl>

<Br/>

<Dl>

<Dt onclick = "DisplayList ()">

Star list 4

</Dt>

<Dd> Ronaldo </dd>

<Dd> Beckham </dd>

<Dd> Zidane </dd>

<Dd> Neymar </dd>

<Dd> Pattaya </dd>

<Dd> Messi </dd>

</Dl>

<Br/>

<Dl>

<Dt onclick = "DisplayList ()">

Star List 5

</Dt>

<Dd> Ronaldo </dd>

<Dd> Beckham </dd>

<Dd> Zidane </dd>

<Dd> Neymar </dd>

<Dd> Pattaya </dd>

<Dd> Messi </dd>

</Dl>

<Br/>

<Dl>

<Dt onclick = "DisplayList ()">

Star list 6

</Dt>

<Dd> Ronaldo </dd>

<Dd> Beckham </dd>

<Dd> Zidane </dd>

<Dd> Neymar </dd>

<Dd> Pattaya </dd>

<Dd> Messi </dd>

</Dl>

</Div>

</Body>

</Html>

I hope this article will help you design javascript programs.

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