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js实例入门(简单展开或关闭)_javascript技巧
<!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> <title>简直的展开或关闭</title> <style type="text/css"> .hide{display:none;} .show{display:block;} .hand{cursor:pointer;} .text{padding:10px;background:F3FCFF;line-height:1.3em;border:solid 5px B2DCF9;margin-bottom:7px;} </style> <script type="text/javascript"> /*根据点击项，动态加载内容至iframe中 expand(展开),e_d即expand div container(容器),c即容器缩写 b为bool缩写 n为num缩写 */ function e_d(obj,n){//这二个参数构成iframe里的子页面。test1.htm/test2.htm/test3.htm var c = obj.parentNode.nextSibling; /*取父级的下一个节点,跟父级同辈的。*/ var b = ( c.className == 'hide' ); obj.src = 'images/' + (b?'minus':'plus') + '.gif'/*变换+-图片*/ c.className=b?'text':'hide' if(!c.innerHTML){//如果这一层里没有内容才更新。有内容则不变化 var str = '<iframe id="iframe' + n + '" src="test' + n + '.htm" scrolling="auto" frameborder="0" width="100%" height="100%"'; str += 'onload="this.style.height=iframe' + n + '.document.body.scrollHeight+30"></iframe>'; c.innerHTML = str; } } </ script> </head> <body> <div> <div class="hand"> <img src="http://img.gxlcms.com/http://img.gxlcms.com/images/plus.gif" alt="展开" onclick='e_d(this,1)' />展开1 </div> <div class="hide"></div> </div> <div> <div class="hand"> <img src="http://img.gxlcms.com/http://img.gxlcms.com/images/plus.gif" alt="展开" onclick='e_d(this,2)' />展开2 </div> <div class="hide"></div> </div> </body> </html>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]
