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JavaScript implements code folding function _javascript Skills

Source: Internet
Author: User
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First, define a JavaScript function , as follows:

function Puckermenu (level) {
var levellength = (' row ' + level). Length;
var toDo = ' 0 ';
for (var icount = 0; icount < document.all.length; icount++) {
if (document.all[icount].id.indexof (' row ' + level) > 1 && (Document.all[icount].id.length > Levellength) {
if document.all (' level ' + level). Src.index Of (' Minus.gif ') >-1) {
Document.all[icount].style.display = ' none ';
ToDo = ' 1 ';
} else {
Document.all[icount].style.display = ' block ';
ToDo = ' 0 ';
}}}  if (ToDo = = ' 1 ') {
document.all (' level ' + level). src = ' images/plus.gif ';
 } else {
document.all (' level ' + level). src = ' images/minus.gif ';
 }
}

Second, then on the Web page to define one div and one ul , note div to include a id level start image and an onclick event, ul id to include row , by default, is expanded, if you need to default to closed, You want to ul join in thestyle="display:none"

Examples are as follows:

<body>
<divstyle= "Cursor:hand"
onclick= "Puckermenu (' 1 ');" >public class dataaccess</div>
<ulid=row1>
<li> private string connstring;
<divstyle= "Cursor:hand"
onclick= "Puckermenu (' 2 ');" >protected dbconnection openconnection () </div>
< Ulid=row2style= "Display:none" >{...} </ul>
<li>
other
</ul>
</body>

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