JS Toggle Div CSS Attention to the details _ basic knowledge

Source: Internet
Author: User
Tags wrapper
Attached code:
Copy Code code as follows:

<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "HTTP://WWW.W3.ORG/TR/HTML4/LOOSE.DTD" >
<title></title>
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 ">
/* Specific module placed in this large div * *
#contentmenu1 {
width:100%;
Clear:both;
height:800px;
}
/* Specific Module Div
Consists of two pieces of div
Above Div and left right three pieces into rounded picture
Below Div main placement content
*/
/* Specific Module div*/
. content{
width:30%;
height:190px;
Float:left;
margin-left:2%;
margin-top:10px;
}
/* Specific Module DIV on part * *
. content-top{
width:100.5%;
height:24px;
Float:left;
}
/* Specific module DIV on part left/*
. content-top-left{
width:1%;
height:24px;
Float:left;
Background-image:url (images/module_head_bg_left.png);
Background-position:left;
}
/* Specific Module div section right * *
. content-top-right{
width:99%;
height:24px;
Background-image:url (images/module_head_bg_right.png);
Float:left;
Background-position:right;
}
/* Specific Module div under section * *
. content-bottom{
width:100%;
height:150px;
Float:left;
Border:solid 1px #83ACCF;
}
/* Second block div*/
#contentmenu2 {
width:100%;
Border:solid 1px;
height:800px;
Float:left;
}
/* Third block div*/
#contentmenu3 {
width:100%;
Border:solid 1px;
height:800px;
Float:left;
Display:none;
}
/* Fourth Block div*/
#contentmenu4 {
width:100%;
Border:solid 1px;
height:800px;
Float:left;
Display:none;
}
</style>
<script type= "Text/javascript" >
function Changebody (index) {
Switch (index) {
Case 1:{
document.getElementById (' contentmenu1 '). Style.display = "";
document.getElementById (' contentmenu2 '). Style.display = "None";
document.getElementById (' Contentmenu3 '). Style.display = "None";
document.getElementById (' Contentmenu4 '). Style.display = "None";
Break
}
Case 2:{
Alert (' aaaaaa ');
document.getElementById (' contentmenu2 '). Style.display = "block";
document.getElementById (' contentmenu1 '). Style.display = "None";
document.getElementById (' Contentmenu3 '). Style.display = "None";
document.getElementById (' Contentmenu4 '). Style.display = "None";
Break
}
Case 3:{
document.getElementById (' contentmenu1 '). Style.display = "None";
document.getElementById (' contentmenu2 '). Style.display = "None";
document.getElementById (' Contentmenu3 '). Style.display = "";
document.getElementById (' Contentmenu4 '). Style.display = "None";
Break
}
Case 4:{
document.getElementById (' contentmenu1 '). Style.display = "None";
document.getElementById (' contentmenu2 '). Style.display = "None";
document.getElementById (' Contentmenu3 '). Style.display = "None";
document.getElementById (' Contentmenu4 '). Style.display = "";
Break
}
}
}
</script>
<body>
<div id= "wrapper" >
<div id= "Header" >
<ul id= "NAV" >
<li onclick= "Changebody (1)" > Program Implementation </li>
<li onclick= "Changebody (2)" > Strategic Resources </li>
<li onclick= "Changebody (3)" > Project Map </li>
<li onclick= "Changebody (4)" > Project Analysis </li>
</ul>
</div>
<!--first piece of content div-->
<div id= "Contentmenu1" >
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<!--second piece of content div-->
<div id= "CONTENTMENU2" >
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" ></div>
<div class= "Content-top-right" ></div>
</div>
<div class= "Content-bottom" ></div>
</div>
</div>
<!--third piece of content div-->
<div id= "Contentmenu3" >
Third block
</div>
<!--the fourth block of content div-->
<div id= "Contentmenu4" >
Block Four
</div>
</div>
</body>

Question: Click on <li onclick= "Changebody (2)" > Strategic Resources </li>
This time ' contentmenu2′ this div still does not show out?
jquery can be used to solve this problem directly, such as the following code:
HTML Code:
Copy Code code as follows:

<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "HTTP://WWW.W3.ORG/TR/HTML4/LOOSE.DTD" >
<title></title>
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 ">
<script src= ". /jquery/jquery-1.7b2.js "type=" Text/javascript "></script>
<style type= "Text/css" >
/* Specific modules placed in this large div * * * * #contentmenu1 {width:100%; clear:both; height:800px}
/* Specific Module div by the upper and lower two div composed of div and the left to the right three pieces into a fillet picture below div main place content *//* specific module div*/.content {width:30%; height:190px; float:left; gin-left:2%; margin-top:10px; }
/* Specific Module div on the part */.content-top {width:100.5%; height:24px; float:left;}
/* Specific Module Div Upper left */.content-top-left {width:1%; height:24px float:left; Background-image:url (images/module_head_bg_ Left.png); Background-position:left; }
/* Specific Module Div Upper part right */.content-top-right {width:99%; height:24px; Background-image:url (images/module_head_bg_right.png); Float:left; Background-position:right; }
/* Specific module div under section */.content-bottom {width:100%; height:150px float:left; border:solid 1px #83ACCF;}
/* Second block div*/#contentmenu2 {width:100%; border:solid 1px; height:800px; float:left; display:none;}
/* Third block div*/#contentmenu3 {width:100%; border:solid 1px; height:800px; float:left; display:none;}
/* Fourth block div*/#contentmenu4 {width:100%; border:solid 1px; height:800px; float:left; display:none;}
</style>
<script type= "Text/javascript" >
function Changebody (index) {
$(". Contentmenu "). Hide ();
$ ("#contentmenu" + Index). Show (500);
}
</script>
<body>
<div id= "wrapper" >
<div id= "Header" >
<ul id= "NAV" >
<li onclick= "Changebody (1)" > Program Implementation </li>
<li onclick= "Changebody (2)" > Strategic Resources </li>
<li onclick= "Changebody (3)" > Project Map </li>
<li onclick= "Changebody (4)" > Project Analysis </li>
</ul>
</div>
<!--first piece of content div-->
<div id= "contentmenu1" class= "Contentmenu" >
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" >
</div>
<div class= "Content-top-right" >
</div>
</div>
<div class= "Content-bottom" >
</div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" >
</div>
<div class= "Content-top-right" >
</div>
</div>
<div class= "Content-bottom" >
</div>
</div>
</div>
<!--second piece of content div-->
<div id= "contentmenu2" class= "Contentmenu" >
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" >
</div>
<div class= "Content-top-right" >
</div>
</div>
<div class= "Content-bottom" >
</div>
</div>
<div class= "Content" >
<div class= "Content-top" >
<div class= "Content-top-left" >
</div>
<div class= "Content-top-right" >
</div>
</div>
<div class= "Content-bottom" >
</div>
</div>
</div>
<!--third piece of content div-->
<div id= "Contentmenu3" class= "Contentmenu" >
Third block
</div>
<!--the fourth block of content div-->
<div id= "Contentmenu4" class= "Contentmenu" >
Block Four
</div>
</div>
</body>
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