正文
easyui treegrid实现显示checkbox并能获取到选定值的
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闲聊：
小颖最近忙疯了，经常被加班，昨天都要下班了，又提了个需求，虽然写的代码不多只有几行，可是测试环境很难跑通，一会就ie崩溃了，所以弄得小颖最近老是头晕。
也不知道最近是怎么了，一向特别爱吃的小颖，最近很没有食欲，中午不好好吃饭，就吃一个苹果，再吃几口米然后就饱了，晚上回去也不是很饿，但是到下午就开始头晕，哎！不知道自己是怎么了，昨天下午我们家大颖给我吃零食，我说我没有胃口，旁边的同事都笑了，都说不相信，我那么爱吃的人，竟然会说没胃口不想吃······，可是我真的不想吃啊啊啊啊啊啊啊。好啦不闲聊了，言归正传，下面一起来看看小颖写的demo吧。
注意：支持狐火和IE浏览器哦！不支持chrome
准备：
下载easyui
效果图：
代码：
html+js
<!DOCTYPE html>
<html> <head>
<meta charset="utf-8">
<title>tree-demo</title>
<link rel="stylesheet" type="text/css" href="themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="themes/icon.css">
<link rel="stylesheet" type="text/css" href="css/demo.css">
<script src="js/jquery.min.js" charset="utf-8"></script>
<script src="js/jquery.easyui.min.js" charset="utf-8"></script>
<script type="text/javascript">
function show(checkid) {
var s = '#check_' + checkid;
/*选子节点*/
var nodes = $("#test").treegrid("getChildren", checkid);
for (i = 0; i < nodes.length; i++) {//当父节点被选中，则其孩子都被选中
$(('#check_' + nodes[i].id))[0].checked = $(s)[0].checked; }
//选上级节点
if (!$(s)[0].checked) {//如果子节点中有没有选中的，则父节点就不会被选中
var parent = $("#test").treegrid("getParent", checkid);
$(('#check_' + parent.id))[0].checked = false;
while (parent) {
parent = $("#test").treegrid("getParent", parent.id);
$(('#check_' + parent.id))[0].checked = false;
}
} else {//如果子节点全部被选中，则父节点被选中
var parent = $("#test").treegrid("getParent", checkid);
var flag = true;
var sons = parent.sondata.split(',');
for (j = 0; j < sons.length; j++) {//如果子节点中存在没有选中的，则flag为false
if (!$(('#check_' + sons[j]))[0].checked) {
flag = false;
break;
}
}
if (flag){
$(('#check_' + parent.id))[0].checked = true;//如果子节点中不存在没有选中的，则flag为true，父节点被选中
}
}
} function formatcheckbox(val, row) {
return "<input type='checkbox' onclick=show('" + row.id + "') id='check_" + row.id + "' />";
}
//获取选中的结点
function getSelected() {
var idList = "";
$("input:checked").each(function() {
var id = $(this).attr("id");
if (id.indexOf("check_") > -1) {
idList += id.replace("check_", '') + ',';
}
});
alert(idList);
}
</script>
</head> <body>
<div style="margin:20px 0;"></div>
<table id="test" class="easyui-treegrid" style="width:700px;height:550px" data-options="
url: 'treegrid_data4.json',
method: 'get',
rownumbers: true,
idField: 'id',
treeField: 'name'
">
<thead>
<tr>
<th data-options="field:'name'" width="320">菜单/操作</th>
<th data-options="field:'size'" width="60" align="center" formatter="formatcheckbox">权限分配</th>
</tr>
</thead>
</table>
<input type="button" value="获取选中的ID值" onclick="getSelected()">
</body> </html>
treegrid_data4.json
[{
"id": 1,
"name": "文档栏目管理",
"size": "",
"date": "02/19/2010",
"sondata": "11,12,13,14",
"children": [{
"id": 11,
"name": "增加",
"size": "",
"date": "03/20/2010"
}, {
"id": 12,
"name": "操作管理",
"size": "",
"date": "01/20/2010"
}, {
"id": 13,
"name": "删除",
"size": "",
"date": "01/20/2010"
}, {
"id": 14,
"name": "修改",
"size": "",
"date": "01/20/2010"
}]
}, {
"id": 2,
"name": "菜单管理",
"size": "",
"date": "02/19/2010",
"sondata": "21,22,23,24",
"children": [{
"id": 21,
"name": "增加",
"size": "",
"date": "03/20/2010"
}, {
"id": 22,
"name": "操作管理",
"size": "",
"date": "01/20/2010"
}, {
"id": 23,
"name": "删除",
"size": "",
"date": "01/20/2010"
}, {
"id": 24,
"name": "修改",
"size": "",
"date": "01/20/2010"
}]
}, {
"id": 3,
"name": "角色管理",
"size": "",
"date": "02/19/2010",
"sondata": "31,32,33,34",
"children": [{
"id": 31,
"name": "增加",
"size": "",
"date": "03/20/2010"
}, {
"id": 32,
"name": "操作管理",
"size": "",
"date": "01/20/2010"
}, {
"id": 33,
"name": "删除",
"size": "",
"date": "01/20/2010"
}, {
"id": 34,
"name": "修改",
"size": "",
"date": "01/20/2010"
}]
}, {
"id": 4,
"name": "用户管理",
"size": "",
"date": "02/19/2010",
"sondata": "41,42,43,44",
"children": [{
"id": 41,
"name": "增加",
"size": "",
"date": "03/20/2010"
}, {
"id": 42,
"name": "操作管理",
"size": "",
"date": "01/20/2010"
}, {
"id": 43,
"name": "删除",
"size": "",
"date": "01/20/2010"
}, {
"id": 44,
"name": "修改",
"size": "",
"date": "01/20/2010"
}]
}]
