求一个用js实现的树型下拉列表框 用js实现在列表框中的选择项目用树型菜单来显示,可以分级的,就像csdn左边的导航一样就是在下拉列表框中下选择项以树状的形式显示,当单击列表框中的那个三角按钮时,不是会弹出一个列表选择,就时在这个列表中显示树型的目录,可以进行选择现在急需一个这样例子,如果谁会弄的话,请赐教!! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 好像csdn有现成的例子,你找找看 JQuery里面有树形结构的widget,你可以搜搜 网上很多现成的 自己找找一般都是js结合cookie实现的 jquery插件树:http://blog.csdn.net/IBM_hoojo/archive/2010/06/24/5691142.aspx <!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" lang="zh-cn"><head> <title></title> <script type="text/javascript" src="js/tools.js"></script> <script type="text/javascript"> window.onload = function() { var tres = $(".tres"); var content = $(".content"); for(var i = 0; i < content.length; i ++) { var color = i%2==0?"#b7b0f9":"#dcd7f7"; $(content[i]).css({backgroundColor:color}); } $(".title").css({backgroundColor:"#94e1f1"}); $(".title").attr({onclick:function() { var temp = $($(this)[0].parentNode).css("height") || "18px"; temp = temp=="18px"?"125px":"18px"; $($(this)[0].parentNode).css({height:temp}); }}); } </script> <style type="text/css"> .tres{width:200px;height:18px;border:solid 1px;overflow:hidden;cursor:pointer;} .content{text-align:center;} </style></head><body> <script type="text/javascript"> var dom = document; for(var i = 0; i < 5; i ++) { var title; switch(i){ case 0:title = "我的好友"; break; case 1:title = "我的同学"; break; case 2:title = "我的亲人"; break; case 3:title = "陌生人"; break; case 4:title = "黑名单"; break; } dom.write("<div class='tres'><div class='title'>"+title+"</div>"); for(var j = 0; j < 6; j ++ ) { dom.write("<div class='content'>内容</div>"); } dom.write("</div>"); } </script></body></html>(function() { var p = /^\s*([.#]?)(\w+)\s*$/ , $ = function( selectStr){ return new Lib(selectStr); }, Lib = function(select) { this.length = 0; if(!select) { return; } if(select.nodeType) { this.push(select); return; } select = p.exec(select); if(select[1] == "#") { this.push(document.getElementById(select[2])); return; } if(select[1] == ".") { var temp = document.getElementsByTagName("*"); for(var i = 0; i < temp.length; i ++) { if(temp[i].className == select[2]) { this.push(temp[i]); } } return; } var temp = document.getElementsByTagName(select[2]); for(var i = 0; i < temp.length; i ++) { this.push(temp[i]); } } Lib.prototype = { push:Array.prototype.push, css:function( css ) { if (!css) { return; } if (typeof(css) == "string") { return this[0].style[css]; } for(var o in css) { for(var i = 0; i < this.length; i ++) { this[i].style[o] = css[o]; } } }, attr:function( attr ) { if (!attr) { return; } if (typeof(attr) == "string") { return this[0][attr]; } for (var o in attr) { for (var i = 0; i < this.length; i++) { this[i][o] = attr[o]; } } } } window.$ = window.Lib = $;})();看看吧。自己写的 只能输入数字跟英文正则 请各位看看我这个cookie的错误!!!!!! 高手请进!关于js代码在火狐下的兼容问题! popup上如何禁止右鍵 怎么能让鼠标放到tabbar的tab上就显示该tab的信息? js如何读写文件 获得焦点的文本框改变样式 javascript 中文简繁局部互换问题 请问怎样将SELECT里的内容分组. 小白遇到一个难题,求前辈们帮忙解答 关于JavaScript动态添加事件的问题 JSP如何获取JavaScript的变量值
一般都是js结合cookie实现的
<!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" lang="zh-cn">
<head>
<title></title>
<script type="text/javascript" src="js/tools.js"></script>
<script type="text/javascript">
window.onload = function() {
var tres = $(".tres");
var content = $(".content");
for(var i = 0; i < content.length; i ++) {
var color = i%2==0?"#b7b0f9":"#dcd7f7";
$(content[i]).css({backgroundColor:color});
}
$(".title").css({backgroundColor:"#94e1f1"});
$(".title").attr({onclick:function() {
var temp = $($(this)[0].parentNode).css("height") || "18px";
temp = temp=="18px"?"125px":"18px";
$($(this)[0].parentNode).css({height:temp});
}});
}
</script>
<style type="text/css">
.tres{width:200px;height:18px;border:solid 1px;overflow:hidden;cursor:pointer;}
.content{text-align:center;}
</style>
</head><body>
<script type="text/javascript">
var dom = document;
for(var i = 0; i < 5; i ++) {
var title;
switch(i){
case 0:title = "我的好友"; break;
case 1:title = "我的同学"; break;
case 2:title = "我的亲人"; break;
case 3:title = "陌生人"; break;
case 4:title = "黑名单"; break;
}
dom.write("<div class='tres'><div class='title'>"+title+"</div>");
for(var j = 0; j < 6; j ++ ) {
dom.write("<div class='content'>内容</div>");
}
dom.write("</div>");
}
</script>
</body>
</html>
(function() {
var p = /^\s*([.#]?)(\w+)\s*$/
,
$ = function( selectStr){
return new Lib(selectStr);
},
Lib = function(select) {
this.length = 0;
if(!select) {
return;
}
if(select.nodeType) {
this.push(select);
return;
}
select = p.exec(select);
if(select[1] == "#") {
this.push(document.getElementById(select[2]));
return;
}
if(select[1] == ".") {
var temp = document.getElementsByTagName("*");
for(var i = 0; i < temp.length; i ++) {
if(temp[i].className == select[2]) {
this.push(temp[i]);
}
}
return;
}
var temp = document.getElementsByTagName(select[2]);
for(var i = 0; i < temp.length; i ++) {
this.push(temp[i]);
}
}
Lib.prototype = {
push:Array.prototype.push,
css:function( css ) {
if (!css) {
return;
}
if (typeof(css) == "string") {
return this[0].style[css];
}
for(var o in css) {
for(var i = 0; i < this.length; i ++) {
this[i].style[o] = css[o];
}
}
},
attr:function( attr ) {
if (!attr) {
return;
}
if (typeof(attr) == "string") {
return this[0][attr];
}
for (var o in attr) {
for (var i = 0; i < this.length; i++) {
this[i][o] = attr[o];
}
}
}
}
window.$ = window.Lib = $;
})();
看看吧。自己写的