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How to Implement Simple tabs and automatic switch in js

Source: Internet
Author: User
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How to Implement Simple tabs and automatic switch in js

Note:

Set an identifier number to 0, write an identifier + 1 every several seconds, execute the function of switching effect, and then execute.
When the length of the tag exceeds the length of the current tab, set it to 0.
Turn off the timer when you move the mouse to the tab, and turn on the timer when you move the mouse away.

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<! DOCTYPE html>

<Html>

<Head>

<Meta charset = "gb2312"/>

<Title> untitled document </title>

<Style>

Body, ul, li {

Margin: 0;

Padding: 0;

Font: 12px/1.5 arial;

}

Ul, li {

List-style: none;

}

. Wrap {

Width: 500px;

Margin: 20px auto;

}

. Hide {

Display: none;

}

# Tab_t {

Height: 25px;

Border-bottom: 1px solid # ccc;

}

# Tab_t li {

Float: left;

Width: 80px;

Height: 24px;

Line-height: 24px;

Margin: 0 4px;

Text-align: center;

Border: 1px solid # ccc;

Border-bottom: none;

Background: # f5f5f5;

Cursor: pointer

}

# Tab_t. act {

Position: relative;

Height: 25px;

Margin-bottom:-1px;

Background: # fff;

}

# Tab_c {

Border: 1px solid # ccc;

Border-top: none;

Padding: 20px;

}

</Style>

<Script>

Window. onload = function (){

Tab ("tab_t", "li", "tab_c", "div", "onmouseover ")

Function tab (tab_t, tab_t_tag, tab_c, tag_c_tag, evt ){

Var tab_t = document. getElementById (tab_t );

Var tab_t_li = tab_t.getElementsByTagName (tab_t_tag );

Var tab_c = document. getElementById (tab_c );

Var tab_c_li = tab_c.getElementsByTagName (tag_c_tag );

Var len = tab_t_li.length;

Var I = 0;

Var timer = null;

Var num = 0;

For (I = 0; I <len; I ++ ){

Tab_t_li [I]. index = I;

Tab_t_li [I] [evt] = function (){

ClearInterval (timer );

Num = this. index;

Tab_change ()

}

Tab_t_li [I]. onmouseout = function (){

Autoplay ();

}

}

Function tab_change (){

For (I = 0; I <len; I ++ ){

Tab_t_li [I]. className = '';

Tab_c_li [I]. className = 'hide ';

}

Tab_t_li [num]. className = 'ac ';

Tab_c_li [num]. className = '';

}

Function autoplay (){

Timer = setInterval (function (){

Num ++;

If (num> = len) num = 0;

Tab_change ();

},1000 );

}

Autoplay ();

}

}

</Script>

</Head>

<Body>

<Div class = "wrap">

<Ul id = "tab_t">

<Li class = "act"> select 1 </li>

<Li> select 2 </li>

<Li> select 3 </li>

<Li> select 4 </li>

</Ul>

<Div id = "tab_c">

<Div> content 1 </div>

<Div class = "hide"> content 2 </div>

<Div class = "hide"> content 3 </div>

<Div class = "hide"> content 4 </div>

</Div>

</Div>

</Body>

</Html>

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