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Angular combines with zTree to asynchronously load node data instance sharing

小云云
小云云Original
2018-01-24 10:04:162206browse

This article mainly shares with you the difficulties and methods of asynchronously loading node data using Angular combined with zTree. Friends who have needs in this regard can refer to it. I hope it can help everyone.

1 Prerequisite preparation

1.1 Create a new angular4 project

1.2 Go to zTree official website to download zTree

zTree official website: Click to go to

Version used by Sanshao: Click to go to

##2 Programming steps

　

It can be seen from printing out the zTree object that the zTree object uses the init method to implement the zTree structure; the init method receives three parameters

Parameter 1: A DOM node object with an ul tag

Parameters 2: Basic configuration object

Parameter 3: Title information array

2.1 Introduce relevant js and css into index.html



<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>TestZtree</title>
 <base href="/" rel="external nofollow" >

 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link rel="icon" type="image/x-icon" href="favicon.ico" rel="external nofollow" >

 <link rel="stylesheet" type="text/css" href="./assets/zTree/css/zTreeStyle/zTreeStyle.css" rel="external nofollow" >
 <link rel="stylesheet" type="text/css" href="./assets/zTree/css/demo.css" rel="external nofollow" >
 <script src="./assets/zTree/js/jquery-1.4.4.min.js"></script>
 <script src="./assets/zTree/js/jquery.ztree.core.js"></script>
</head>
<body>
 <app-root></app-root>
</body>
</html>
View Code

2.2 Declare the jquery object in the TS file


declare var $ : any;
2.3 Write code in TS file

##

import { Component, OnInit } from '@angular/core';
declare var $ : any;
@Component({
 selector: 'app-root',
 templateUrl: './app.component.html',
 styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {

 // setting = {
 // view: {
 // showLine: true,
 // showIcon: true,
 // fontCss: this.getFont
 // },
 // data: {
 // simpleData: {
 // enable: true,
 // idKey: 'id',
 // pIdKey: 'pId'
 // }
 // },
 // callback: {
 // onClick: this.onCzTreeOnClick
 // }
 // };
 // zNodes = [
 // {id: 1, pId: 0, name: '1 一级标题', open: true, iconOpen:"assets/zTree/css/zTreeStyle/img/diy/1_open.png", iconClose:"assets/zTree/css/zTreeStyle/img/diy/1_close.png"},
 // {id: 11, pId: 1, name: '1.1 二级标题', open: true, font:{'background-color':'skyblue', 'color':'white'}},
 // {id: 111, pId: 11, name: '1.1.1 三级标题 -> 博客园', url: 'http://www.cnblogs.com/NeverCtrl-C/'},
 // {id: 112, pId: 11, name: '1.1.2 三级标题 -> 单击', click: "alert('你单击了')"},
 // {id: 12, pId: 1, name: '1.2 二级标题'},
 // {id: 2, pId: 0, name: '2 一级标题'}
 // ]
 // getFont(treeId, node) {
 // return node.font ? node.font : {};
 // }
 // onCzTreeOnClick(event, treeId, treeNode, clickFlag) {
 // alert(treeNode.name);
 // } 
 setting = {
 data: {
 simpleData: {
 enable: true
 }
 }
 };
 zNodes = [
 {id: 1, pId: 0, name: '1 一级标题'},
 {id: 11, pId: 1, name: '1.1 二级标题'},
 {id: 111, pId: 11, name: '1.1.1 三级标题'},
 {id: 112, pId: 11, name: '1.1.2 三级标题'},
 {id: 12, pId: 1, name: '1.2 二级标题'},
 {id: 2, pId: 0, name: '2 一级标题'}
 ];
 constructor() { }
 ngOnInit() { 
 console.log($);
 console.log($.fn.zTree);
 $.fn.zTree.init($("#ztree"),this.setting,this.zNodes);
 }
}

View Code

2.4 In component HTML Write code in 

<ul class="ztree"><ul></ul>

2.5 Effect display

3 zTree basic functions

3.1 Not displayed Connecting lines

3.1.1 Official documentation

Does not display connecting lines between titles

3.1.2 Programming steps

Just specify the value of showLine attribute as false in the basic configuration object

 setting = {
 data: {
 simpleData: {
 enable: true
 }
 },
 view: {
 showLine: false
 }
 };

3.2 Do not display the node icon

3.2.1 Official document

Remove the icon in front of the node

#3.2.2 Programming steps

Set the showIcon attribute of the basic configuration object to false


##

setting = {
 data: {
 simpleData: {
 enable: true
 }
 },
 view: {
 showLine: false,
 showIcon: false
 }
 };
View Code


3.3 Custom node icon

3.3.1 Official document

Change the icon of the node

3.3.2 Programming steps

Set icon/iconOpen for treeNode node data /iconClose attribute

3.4 Custom font

3.4.1 Official document

Change the style of node font

3.4.2 Programming steps

Just set the font attribute for the treeNode node data. The value of the font attribute is an object, and the content of the object is the same as the style data

3.4.3 Effect display

##3.5 Hyperlink

3.5.1 Official document

Clicking on the node title will automatically jump to the corresponding url

Note 01: The click attribute can only perform the simplest click event operation. content equivalent to . If the operation is more complex, use the onClick event callback function.

3.5.2 Programming steps

Set the url and click attributes for the treeNode node data

Tip 01: When setting the click attribute , the attribute value must be some simple onClick event

Tip 02: When setting the target attribute, the attribute values ​​​​are _blank and _self

_blank -> Open in a new window

_self -> Open in the original window

##
 zNodes = [
 {id: 1, pId: 0, name: '1 一级标题', open: true, iconOpen:"assets/zTree/css/zTreeStyle/img/diy/1_open.png", iconClose:"assets/zTree/css/zTreeStyle/img/diy/1_close.png"},
 {id: 11, pId: 1, name: '1.1 二级标题', open: true, font:{'background-color':'skyblue', 'color':'white'}},
 {id: 111, pId: 11, name: '1.1.1 三级标题 -> 博客园1', url: 'http://www.cnblogs.com/NeverCtrl-C/', target: '_blank'},
 {id: 113, pId: 11, name: '1.1.1 三级标题 -> 博客园2', url: 'http://www.cnblogs.com/NeverCtrl-C/', target: '_self'},
 {id: 112, pId: 11, name: '1.1.2 三级标题 -> 单击', click: "alert('你单击了')"},
 {id: 12, pId: 1, name: '1.2 二级标题'},
 {id: 2, pId: 0, name: '2 一级标题'}
 ]

View Code

3.6 Click control


3.6.1 Official document

The corresponding method is triggered when the node title is clicked

Tips 01: You can use this usage in angular Implement route jump

3.6.2 编程步骤

设置基本配置对象的onClick属性

技巧01：onClick属性值是一个方法的引用，我们需要自己编写这个方法



 setting = {
 view: {
 showLine: true,
 showIcon: true,
 fontCss: this.getFont
 },
 data: {
 simpleData: {
 enable: true,
 idKey: 'id',
 pIdKey: 'pId'
 }
 },
 callback: {
 onClick: this.onCzTreeOnClick
 }
 };

View Code

编写onClick触发方法



 onCzTreeOnClick(event, treeId, treeNode, clickFlag) {
 alert(treeNode.name);
 }

View Code

3.6.3 代码汇总



import { Component, OnInit } from '@angular/core';
declare var $ : any;
@Component({
 selector: 'app-root',
 templateUrl: './app.component.html',
 styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {
 setting = {
 view: {
 showLine: true,
 showIcon: true,
 fontCss: this.getFont
 },
 data: {
 simpleData: {
 enable: true,
 idKey: 'id',
 pIdKey: 'pId'
 }
 },
 callback: {
 onClick: this.onCzTreeOnClick
 },
 // async: {
 // enable: true,
 // url:"http://localhost:3000/data",
 // type: "get",
 // // autoParam:["id", "name=n", "level=lv"],
 // // otherParam:{"otherParam":"zTreeAsyncTest"},
 // dataFilter: this.filter
 // }
 };
 zNodes = [
 {id: 1, pId: 0, name: '1 一级标题', open: true, iconOpen:"assets/zTree/css/zTreeStyle/img/diy/1_open.png", iconClose:"assets/zTree/css/zTreeStyle/img/diy/1_close.png"},
 {id: 11, pId: 1, name: '1.1 二级标题', open: true, font:{'background-color':'skyblue', 'color':'white'}},
 {id: 111, pId: 11, name: '1.1.1 三级标题 -> 博客园1', url: 'http://www.cnblogs.com/NeverCtrl-C/', target: '_blank'},
 {id: 113, pId: 11, name: '1.1.1 三级标题 -> 博客园2', url: 'http://www.cnblogs.com/NeverCtrl-C/', target: '_self'},
 {id: 112, pId: 11, name: '1.1.2 三级标题 -> 单击', click: "alert('你单击了')"},
 {id: 12, pId: 1, name: '1.2 二级标题'},
 {id: 2, pId: 0, name: '2 一级标题'}
 ]
 getFont(treeId, node) {
 return node.font ? node.font : {};
 }
 // filter(treeId, parentNode,responseData) {
 // console.log(responseData);
 // if (responseData) {
 // for(var i =0; i < responseData.length; i++) {
 // responseData[i].name += "动态节点数据" + responseData[i].id;
 // }
 // }
 // return responseData;
 // }
 onCzTreeOnClick(event, treeId, treeNode, clickFlag) {
 alert(treeNode.name);
 } 
 constructor() { } 
 ngOnInit() { 
 console.log('打印输出jquery对象');
 console.log($);
 console.log('但因输出zTree对象');
 console.log($.fn.zTree);
 $.fn.zTree.init($("#ztree"),this.setting,this.zNodes);
 // $.fn.zTree.init($("#ztree"),this.setting);
 }
}

View Code

3.7 异步加载节点数据

3.7.1 官方文档

节点的数据是从后台进行获取的

3.7.2 编程步骤

技巧01：异步加载节点数据时init方法不用传递第三个参数

> 准备一个后台用于返回JSON格式的数据

技巧01：返回的JSON数据是一个列表，格式为


[
 {
 "id": 1,
 "pId": 0,
 "name": "1 one"
 },
 {
 "id": 2,
 "pId": 0,
 "name": "2 two"
 }
 ]

技巧02：三少偷懒，是利用json-server模拟的后台数据，哈哈；json-server

> 设置基本配置对象的async属性



 setting = {
 view: {
 showLine: true,
 showIcon: true,
 fontCss: this.getFont
 },
 data: {
 simpleData: {
 enable: true,
 idKey: 'id',
 pIdKey: 'pId'
 }
 },
 callback: {
 onClick: this.onCzTreeOnClick
 },
 async: {
 enable: true,
 url:"http://localhost:3000/data",
 type: "get",
 // autoParam:["id", "name=n", "level=lv"],
 // otherParam:{"otherParam":"zTreeAsyncTest"},
 dataFilter: this.filter
 }
 };

View Code

> 编写响应数据处理方法



 filter(treeId, parentNode,responseData) {
 console.log(responseData);
 if (responseData) {
 for(var i =0; i < responseData.length; i++) {
 responseData[i].name += "动态节点数据" + responseData[i].id;
 }
 }
 return responseData;
 }

View Code

3.7.3 代码总汇



{
 "data": 
 [
 {
 "id": 1,
 "pId": 0,
 "name": "1 one"
 },
 {
 "id": 11,
 "pId": 1,
 "name": "1.1 oneToOne"
 },
 {
 "id": 12,
 "pId": 1,
 "name": "1.2 oneToTwo"
 },
 {
 "id": 2,
 "pId": 0,
 "name": "2 two"
 }
 ]
}

模拟后台响应数据



<ul class="ztree"><ul></ul>

HTML



import { Component, OnInit } from '@angular/core';
declare var $ : any;

@Component({
 selector: 'app-root',
 templateUrl: './app.component.html',
 styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {

 setting = {
 view: {
 showLine: true,
 showIcon: true,
 fontCss: this.getFont
 },
 data: {
 simpleData: {
 enable: true,
 idKey: 'id',
 pIdKey: 'pId'
 }
 },
 callback: {
 onClick: this.onCzTreeOnClick
 },
 async: {
 enable: true,
 url:"http://localhost:3000/data",
 type: "get",
 // autoParam:["id", "name=n", "level=lv"],
 // otherParam:{"otherParam":"zTreeAsyncTest"},
 dataFilter: this.filter
 }
 };

 // zNodes = [
 // {id: 1, pId: 0, name: '1 一级标题', open: true, iconOpen:"assets/zTree/css/zTreeStyle/img/diy/1_open.png", iconClose:"assets/zTree/css/zTreeStyle/img/diy/1_close.png"},
 // {id: 11, pId: 1, name: '1.1 二级标题', open: true, font:{'background-color':'skyblue', 'color':'white'}},
 // {id: 111, pId: 11, name: '1.1.1 三级标题 -> 博客园1', url: 'http://www.cnblogs.com/NeverCtrl-C/', target: '_blank'},
 // {id: 113, pId: 11, name: '1.1.1 三级标题 -> 博客园2', url: 'http://www.cnblogs.com/NeverCtrl-C/', target: '_self'},
 // {id: 112, pId: 11, name: '1.1.2 三级标题 -> 单击', click: "alert('你单击了')"},
 // {id: 12, pId: 1, name: '1.2 二级标题'},
 // {id: 2, pId: 0, name: '2 一级标题'}
 // ]

 getFont(treeId, node) {
 return node.font ? node.font : {};
 }

 filter(treeId, parentNode,responseData) {
 console.log(responseData);
 if (responseData) {
 for(var i =0; i < responseData.length; i++) {
 responseData[i].name += "动态节点数据" + responseData[i].id;
 }
 }
 return responseData;
 }

 onCzTreeOnClick(event, treeId, treeNode, clickFlag) {
 alert(treeNode.name);
 } 

 constructor() { }
 
 ngOnInit() { 
 console.log('打印输出jquery对象');
 console.log($);
 console.log('但因输出zTree对象');
 console.log($.fn.zTree);
 // $.fn.zTree.init($("#ztree"),this.setting,this.zNodes);
 $.fn.zTree.init($("#ztree"),this.setting);
 }
}

TS

3.7.4 效果展示

相关推荐：

jquery easyui tree异步加载子节点详解

JavaScript文件的同步和异步加载的实现代码

zTree异步加载展开第一级节点方法实现

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