web页面树形下拉选择框
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介绍一个web页面属性下拉列表框的实现,采用jquery的ztree框架。项目中的效果如图:
1 下载ztree插件,地址:http://www.ztree.me/v3/main.php#_zTreeInfo。
2 引入js和css。
<link rel="stylesheet" type="text/css" href="css/zTreeStyle/zTreeStyle.css">
<script type="text/javascript" src="js/jquery-1.7.2.js"></script>
<script type="text/javascript" src="js/jquery.ztree.core-3.5.js"></script>
3 编写页面。
<div>
城市:<input id="citySel" type="text" readonly value="" style="width:168px;" onclick="showMenu(); return false;"/></a>
</div>
4 调用js,注意数据的格式采用json数组。
<script type="text/javascript">
var setting = {
view: {
dblClickExpand: false
},
data: {
simpleData: {
enable: true
}
},
callback: {
beforeClick: beforeClick,
onClick: onClick
}
};
var zNodes =[
{id:1, pId:0, name:"北京"},
{id:2, pId:0, name:"天津"},
{id:3, pId:0, name:"上海"},
{id:6, pId:0, name:"重庆"},
{id:4, pId:0, name:"河北省", open:true},
{id:41, pId:4, name:"石家庄"},
{id:42, pId:4, name:"保定"},
{id:43, pId:4, name:"邯郸"},
{id:44, pId:4, name:"承德"},
{id:5, pId:0, name:"广东省", open:true},
{id:51, pId:5, name:"广州"},
{id:52, pId:5, name:"深圳"},
{id:53, pId:5, name:"东莞"},
{id:54, pId:5, name:"佛山"},
{id:6, pId:0, name:"福建省", open:true},
{id:61, pId:6, name:"福州"},
{id:62, pId:6, name:"厦门"},
{id:63, pId:6, name:"泉州"},
{id:64, pId:6, name:"三明"}
];
function beforeClick(treeId, treeNode) {
var check = (treeNode && !treeNode.isParent);
if (!check) alert("只能选择城市...");
return check;
}
function onClick(e, treeId, treeNode) {
var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
nodes = zTree.getSelectedNodes(),
v = "";
nodes.sort(function compare(a,b){return a.id-b.id;});
for (var i=0, l=nodes.length; i<l; i++) {
v += nodes[i].name + ",";
}
if (v.length > 0 ) v = v.substring(0, v.length-1);
var cityObj = $("#citySel");
cityObj.attr("value", v);
}
function showMenu() {
var cityObj = $("#citySel");
var cityOffset = $("#citySel").offset();
$("#menuContent").css({left:cityOffset.left + "px", top:cityOffset.top + cityObj.outerHeight() + "px"}).slideDown("fast");
$("body").bind("mousedown", onBodyDown);
}
function hideMenu() {
$("#menuContent").fadeOut("fast");
$("body").unbind("mousedown", onBodyDown);
}
function onBodyDown(event) {
if (!(event.target.id == "menuBtn" || event.target.id == "menuContent" || $(event.target).parents("#menuContent").length>0)) {
hideMenu();
}
}
$(document).ready(function(){
$.fn.zTree.init($("#treeDemo"), setting, zNodes);
});
</script>
上面是一个简单的demo,效果如下:
1 下载ztree插件,地址:http://www.ztree.me/v3/main.php#_zTreeInfo。
2 引入js和css。
<link rel="stylesheet" type="text/css" href="css/zTreeStyle/zTreeStyle.css">
<script type="text/javascript" src="js/jquery-1.7.2.js"></script>
<script type="text/javascript" src="js/jquery.ztree.core-3.5.js"></script>
3 编写页面。
<div>
城市:<input id="citySel" type="text" readonly value="" style="width:168px;" onclick="showMenu(); return false;"/></a>
</div>
4 调用js,注意数据的格式采用json数组。
<script type="text/javascript">
var setting = {
view: {
dblClickExpand: false
},
data: {
simpleData: {
enable: true
}
},
callback: {
beforeClick: beforeClick,
onClick: onClick
}
};
var zNodes =[
{id:1, pId:0, name:"北京"},
{id:2, pId:0, name:"天津"},
{id:3, pId:0, name:"上海"},
{id:6, pId:0, name:"重庆"},
{id:4, pId:0, name:"河北省", open:true},
{id:41, pId:4, name:"石家庄"},
{id:42, pId:4, name:"保定"},
{id:43, pId:4, name:"邯郸"},
{id:44, pId:4, name:"承德"},
{id:5, pId:0, name:"广东省", open:true},
{id:51, pId:5, name:"广州"},
{id:52, pId:5, name:"深圳"},
{id:53, pId:5, name:"东莞"},
{id:54, pId:5, name:"佛山"},
{id:6, pId:0, name:"福建省", open:true},
{id:61, pId:6, name:"福州"},
{id:62, pId:6, name:"厦门"},
{id:63, pId:6, name:"泉州"},
{id:64, pId:6, name:"三明"}
];
function beforeClick(treeId, treeNode) {
var check = (treeNode && !treeNode.isParent);
if (!check) alert("只能选择城市...");
return check;
}
function onClick(e, treeId, treeNode) {
var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
nodes = zTree.getSelectedNodes(),
v = "";
nodes.sort(function compare(a,b){return a.id-b.id;});
for (var i=0, l=nodes.length; i<l; i++) {
v += nodes[i].name + ",";
}
if (v.length > 0 ) v = v.substring(0, v.length-1);
var cityObj = $("#citySel");
cityObj.attr("value", v);
}
function showMenu() {
var cityObj = $("#citySel");
var cityOffset = $("#citySel").offset();
$("#menuContent").css({left:cityOffset.left + "px", top:cityOffset.top + cityObj.outerHeight() + "px"}).slideDown("fast");
$("body").bind("mousedown", onBodyDown);
}
function hideMenu() {
$("#menuContent").fadeOut("fast");
$("body").unbind("mousedown", onBodyDown);
}
function onBodyDown(event) {
if (!(event.target.id == "menuBtn" || event.target.id == "menuContent" || $(event.target).parents("#menuContent").length>0)) {
hideMenu();
}
}
$(document).ready(function(){
$.fn.zTree.init($("#treeDemo"), setting, zNodes);
});
</script>
上面是一个简单的demo,效果如下:
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