zTree.js 异步加载地区例子

后台实现可以参考我以前发表的文章  地区三级联动

zTree API js 下载 点击打开链接 

一个效果demo

zTree.js 异步加载地区例子_第1张图片




	 ZTREE DEMO - select menu
	
	
	
	
	
	
	
	
 


下拉菜单

[ 文件路径: super/select_menu.html ]
  •    选择城市时,按下 Ctrl 或 Cmd 键可以进行多选
  •   城市:   选择
  • 实现方法说明

    • 用 zTree 实现这种下拉菜单,应该说是比较容易的,你只需要控制 zTree 所在容器的隐藏/显示,以及位置即可。
    • zTree v3.x 实现了多点选中功能,因此对于需要多选的下拉菜单也易如反掌。
    • 利用 setting 的各项配置参数,完全可以满足大部分的功能需求。

实际应用中代码

zTree.js 异步加载地区例子_第2张图片


	

	
	


地区:
		 
		
		
		
		
		 

		var setting = {
		    async: {
				enable: true,
				url:"/area/getAreas.do",
				autoParam:["id=code"],
				//autoParam:["id", "name=n", "level=lv"],
				//otherParam:{"otherParam":"zTreeAsyncTest"},
				//dataFilter: filter,
				type: "get"
			},
			view: {
				dblClickExpand: false
			},
			data: {
				simpleData: {
					enable: true
				}
			},
			callback: {
				beforeClick: beforeClick,
				onClick: onClick
			}
		};

		var zNodes;

		function beforeClick(treeId, treeNode) {
			//var check = (treeNode && !treeNode.isParent);
			//if (!check) alert("只能选择城市...");
			return true;
		}
		
		function onClick(e, treeId, treeNode) {
			var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
			nodes = zTree.getSelectedNodes(),
			v = "";
			var code="";
			nodes.sort(function compare(a,b){return a.id-b.id;});
			for (var i=0, l=nodes.length; i 0 ) v = v.substring(0, v.length);//-1
			var cityObj = $("#citySel");
			cityObj.attr("value", v);
			$("#areaCodeV").val(code);
		}

		//选 择
		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(){
			
			$.ajax({
				url : "/area/getAreas.do",
				type : "POST",
				dataType : "json",
				data : {
					code : "P"
				},
				success : function(returnData, status) {
					if (status = "success") {
						//alert("returnData:"+returnData);
						 zNodes = returnData;
						//zNodes=dataj;
						$.fn.zTree.init($("#treeDemo"), setting, zNodes);
					}
				}
			});
			
			
			//alert(JSON.stringify(zNodes));
			//$.fn.zTree.init($("#treeDemo"), setting, zNodes);
		});
		
		//通过等级获取了菜单 , seleId
		function getAreas(level) {
			var dataj;
			$.ajax({
				url : "/area/getAreas.do",
				type : "POST",
				dataType : "json",
				data : {
					code : level
				},
				success : function(returnData, status) {
					if (status = "success") {
						alert("returnData:"+returnData);
						var dataj = returnData;
						zNodes=dataj;
					}
				}
			});
			
			return dataj;
		}
		
		//清空
		function claclArea()
		{
			$("#citySel").val('');
			$("#areaCodeV").val('');
		}


版本2 显示全部地区

		var setting = {
		    async: {
				enable: true,
				url:"/area/getAreas.do",
				autoParam:["id=code"],
				//autoParam:["id", "name=n", "level=lv"],
				//otherParam:{"otherParam":"zTreeAsyncTest"},
				//dataFilter: filter,
				type: "get"
			},
			view: {
				dblClickExpand: false
			},
			data: {
				simpleData: {
					enable: true
				}
			},
			callback: {
				beforeClick: beforeClick,
				onClick: onClick
			}
		};

		var zNodes;

		function beforeClick(treeId, treeNode) {
			//var check = (treeNode && !treeNode.isParent);
			//if (!check) alert("只能选择城市...");
			return true;
		}
		
		function onClick(e, treeId, treeNode) {
			var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
			nodes = zTree.getSelectedNodes(),
			v = "";
			var code="";
			nodes.sort(function compare(a,b){return a.id-b.id;});
			for (var i=0, l=nodes.length; i 0 ) v = v.substring(0, v.length);//-1
			var cityObj = $("#citySel");
			
			
			
			cityObj.attr("value", v);
			$("#area_h_3").val(code);
		}

		//选 择
		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(){
			
			$.ajax({
				url : "/area/getAreas.do",
				type : "POST",
				dataType : "json",
				data : {
					code : "P"
				},
				success : function(returnData, status) {
					if (status = "success") {
						//alert("returnData:"+returnData);
						 zNodes = returnData;
						//zNodes=dataj;
						$.fn.zTree.init($("#treeDemo"), setting, zNodes);
					}
				}
			});
			
			
			//alert(JSON.stringify(zNodes));
			//$.fn.zTree.init($("#treeDemo"), setting, zNodes);
		});
		
		//通过等级获取了菜单 , seleId
		function getAreas(level) {
			var dataj;
			$.ajax({
				url : "/area/getAreas.do",
				type : "POST",
				dataType : "json",
				data : {
					code : level
				},
				success : function(returnData, status) {
					if (status = "success") {
						alert("returnData:"+returnData);
						var dataj = returnData;
						zNodes=dataj;
					}
				}
			});
			
			return dataj;
		}
		
		//清空
		function claclArea()
		{
			$("#citySel").val('');
			$("#areaCodeV").val('');
		}


你可能感兴趣的:(js)