示例效果图如下：
当前示例的数据加载的是静态json文件 。
当鼠标移动到节点上时，会有节点描叙信息提示框。
当在节点处右键时，会弹出右键编辑菜单，效果如下图：
当鼠标单击节点以外区域时，会隐藏右键编辑菜单。
接下来直接上源码。
首先是静态JSON数据文件：
flare.json 文件内容如下：
{
"name": "根节点",
"describes":"这个是一级根节点",
"children":[
{
"name": "二级节点(analytics)",
"describes":"这个是二级子节点",
"children": [
{
"name": "cluster",
"children": [
{"name": "AgglomerativeCluster", "value": 3938},
{"name": "CommunityStructure", "value": 3812},
{"name": "HierarchicalCluster", "value": 6714},
{"name": "MergeEdge", "value": 743}
]
},
{
"name": "graph",
"children": [
{"name": "BetweennessCentrality", "value": 3534},
{"name": "LinkDistance", "value": 5731},
{"name": "MaxFlowMinCut", "value": 7840},
{"name": "ShortestPaths", "value": 5914},
{"name": "SpanningTree", "value": 3416}
]
},
{
"name": "optimization",
"children": [
{"name": "AspectRatioBanker", "value": 7074}
]
}
]
},
{
"name": "animate",
"children": [
{"name": "Easing", "value": 17010},
{"name": "FunctionSequence", "value": 5842},
{
"name": "interpolate",
"children": [
{"name": "ArrayInterpolator", "value": 1983},
{"name": "ColorInterpolator", "value": 2047},
{"name": "DateInterpolator", "value": 1375},
{"name": "Interpolator", "value": 8746},
{"name": "MatrixInterpolator", "value": 2202},
{"name": "NumberInterpolator", "value": 1382},
{"name": "ObjectInterpolator", "value": 1629},
{"name": "PointInterpolator", "value": 1675},
{"name": "RectangleInterpolator", "value": 2042}
]
},
{"name": "ISchedulable", "value": 1041},
{"name": "Parallel", "value": 5176},
{"name": "Pause", "value": 449},
{"name": "Scheduler", "value": 5593},
{"name": "Sequence", "value": 5534},
{"name": "Transition", "value": 9201},
{"name": "Transitioner", "value": 19975},
{"name": "TransitionEvent", "value": 1116},
{"name": "Tween", "value": 6006}
]
},
{
"name": "data",
"children": [
{
"name": "converters",
"children": [
{"name": "Converters", "value": 721},
{"name": "DelimitedTextConverter", "value": 4294},
{"name": "GraphMLConverter", "value": 9800},
{"name": "IDataConverter", "value": 1314},
{"name": "JSONConverter", "value": 2220}
]
},
{"name": "DataField", "value": 1759},
{"name": "DataSchema", "value": 2165},
{"name": "DataSet", "value": 586},
{"name": "DataSource", "value": 3331},
{"name": "DataTable", "value": 772},
{"name": "DataUtil", "value": 3322}
]
},
{
"name": "display",
"children": [
{"name": "DirtySprite", "value": 8833},
{"name": "LineSprite", "value": 1732},
{"name": "RectSprite", "value": 3623},
{"name": "TextSprite", "value": 10066}
]
},
{
"name": "flex",
"children": [
{"name": "FlareVis", "value": 4116}
]
},
{
"name": "query",
"children": [
{"name": "AggregateExpression", "value": 1616},
{"name": "And", "value": 1027},
{"name": "Arithmetic", "value": 3891},
{"name": "Average", "value": 891},
{"name": "BinaryExpression", "value": 2893},
{"name": "Comparison", "value": 5103},
{"name": "CompositeExpression", "value": 3677},
{"name": "Count", "value": 781},
{"name": "DateUtil", "value": 4141},
{"name": "Distinct", "value": 933},
{"name": "Expression", "value": 5130},
{"name": "ExpressionIterator", "value": 3617},
{"name": "Fn", "value": 3240},
{"name": "If", "value": 2732},
{"name": "IsA", "value": 2039},
{"name": "Literal", "value": 1214},
{"name": "Match", "value": 3748},
{"name": "Maximum", "value": 843},
{
"name": "methods",
"children": [
{"name": "add", "value": 593},
{"name": "and", "value": 330},
{"name": "average", "value": 287},
{"name": "count", "value": 277},
{"name": "distinct", "value": 292},
{"name": "div", "value": 595},
{"name": "eq", "value": 594},
{"name": "fn", "value": 460},
{"name": "gt", "value": 603},
{"name": "gte", "value": 625},
{"name": "iff", "value": 748},
{"name": "isa", "value": 461},
{"name": "lt", "value": 597},
{"name": "lte", "value": 619},
{"name": "max", "value": 283},
{"name": "min", "value": 283},
{"name": "mod", "value": 591},
{"name": "mul", "value": 603},
{"name": "neq", "value": 599},
{"name": "not", "value": 386},
{"name": "or", "value": 323},
{"name": "orderby", "value": 307},
{"name": "range", "value": 772},
{"name": "select", "value": 296},
{"name": "stddev", "value": 363},
{"name": "sub", "value": 600},
{"name": "sum", "value": 280},
{"name": "update", "value": 307},
{"name": "variance", "value": 335},
{"name": "where", "value": 299},
{"name": "xor", "value": 354},
{"name": "-", "value": 264}
]
},
{"name": "Minimum", "value": 843},
{"name": "Not", "value": 1554},
{"name": "Or", "value": 970},
{"name": "Query", "value": 13896},
{"name": "Range", "value": 1594},
{"name": "StringUtil", "value": 4130},
{"name": "Sum", "value": 791},
{"name": "Variable", "value": 1124},
{"name": "Variance", "value": 1876},
{"name": "Xor", "value": 1101}
]
},
{
"name": "scale",
"children": [
{"name": "IScaleMap", "value": 2105},
{"name": "LinearScale", "value": 1316},
{"name": "LogScale", "value": 3151},
{"name": "OrdinalScale", "value": 3770},
{"name": "QuantileScale", "value": 2435},
{"name": "QuantitativeScale", "value": 4839},
{"name": "RootScale", "value": 1756},
{"name": "Scale", "value": 4268},
{"name": "ScaleType", "value": 1821},
{"name": "TimeScale", "value": 5833}
]
},
{
"name": "util",
"children": [
{"name": "Arrays", "value": 8258},
{"name": "Colors", "value": 10001},
{"name": "Dates", "value": 8217},
{"name": "Displays", "value": 12555},
{"name": "Filter", "value": 2324},
{"name": "Geometry", "value": 10993},
{
"name": "heap",
"children": [
{"name": "FibonacciHeap", "value": 9354},
{"name": "HeapNode", "value": 1233}
]
},
{"name": "IEvaluable", "value": 335},
{"name": "IPredicate", "value": 383},
{"name": "IValueProxy", "value": 874},
{
"name": "math",
"children": [
{"name": "DenseMatrix", "value": 3165},
{"name": "IMatrix", "value": 2815},
{"name": "SparseMatrix", "value": 3366}
]
},
{"name": "Maths", "value": 17705},
{"name": "Orientation", "value": 1486},
{
"name": "palette",
"children": [
{"name": "ColorPalette", "value": 6367},
{"name": "Palette", "value": 1229},
{"name": "ShapePalette", "value": 2059},
{"name": "SizePalette", "value": 2291}
]
},
{"name": "Property", "value": 5559},
{"name": "Shapes", "value": 19118},
{"name": "Sort", "value": 6887},
{"name": "Stats", "value": 6557},
{"name": "Strings", "value": 22026}
]
},
{
"name": "vis",
"children": [
{
"name": "axis",
"children": [
{"name": "Axes", "value": 1302},
{"name": "Axis", "value": 24593},
{"name": "AxisGridLine", "value": 652},
{"name": "AxisLabel", "value": 636},
{"name": "CartesianAxes", "value": 6703}
]
},
{
"name": "controls",
"children": [
{"name": "AnchorControl", "value": 2138},
{"name": "ClickControl", "value": 3824},
{"name": "Control", "value": 1353},
{"name": "ControlList", "value": 4665},
{"name": "DragControl", "value": 2649},
{"name": "ExpandControl", "value": 2832},
{"name": "HoverControl", "value": 4896},
{"name": "IControl", "value": 763},
{"name": "PanZoomControl", "value": 5222},
{"name": "SelectionControl", "value": 7862},
{"name": "TooltipControl", "value": 8435}
]
},
{
"name": "data",
"children": [
{"name": "Data", "value": 20544},
{"name": "DataList", "value": 19788},
{"name": "DataSprite", "value": 10349},
{"name": "EdgeSprite", "value": 3301},
{"name": "NodeSprite", "value": 19382},
{
"name": "render",
"children": [
{"name": "ArrowType", "value": 698},
{"name": "EdgeRenderer", "value": 5569},
{"name": "IRenderer", "value": 353},
{"name": "ShapeRenderer", "value": 2247}
]
},
{"name": "ScaleBinding", "value": 11275},
{"name": "Tree", "value": 7147},
{"name": "TreeBuilder", "value": 9930}
]
},
{
"name": "events",
"children": [
{"name": "DataEvent", "value": 2313},
{"name": "SelectionEvent", "value": 1880},
{"name": "TooltipEvent", "value": 1701},
{"name": "VisualizationEvent", "value": 1117}
]
},
{
"name": "legend",
"children": [
{"name": "Legend", "value": 20859},
{"name": "LegendItem", "value": 4614},
{"name": "LegendRange", "value": 10530}
]
},
{
"name": "operator",
"children": [
{
"name": "distortion",
"children": [
{"name": "BifocalDistortion", "value": 4461},
{"name": "Distortion", "value": 6314},
{"name": "FisheyeDistortion", "value": 3444}
]
},
{
"name": "encoder",
"children": [
{"name": "ColorEncoder", "value": 3179},
{"name": "Encoder", "value": 4060},
{"name": "PropertyEncoder", "value": 4138},
{"name": "ShapeEncoder", "value": 1690},
{"name": "SizeEncoder", "value": 1830}
]
},
{
"name": "filter",
"children": [
{"name": "FisheyeTreeFilter", "value": 5219},
{"name": "GraphDistanceFilter", "value": 3165},
{"name": "VisibilityFilter", "value": 3509}
]
},
{"name": "IOperator", "value": 1286},
{
"name": "label",
"children": [
{"name": "Labeler", "value": 9956},
{"name": "RadialLabeler", "value": 3899},
{"name": "StackedAreaLabeler", "value": 3202}
]
},
{
"name": "layout",
"children": [
{"name": "AxisLayout", "value": 6725},
{"name": "BundledEdgeRouter", "value": 3727},
{"name": "CircleLayout", "value": 9317},
{"name": "CirclePackingLayout", "value": 12003},
{"name": "DendrogramLayout", "value": 4853},
{"name": "ForceDirectedLayout", "value": 8411},
{"name": "IcicleTreeLayout", "value": 4864},
{"name": "IndentedTreeLayout", "value": 3174},
{"name": "Layout", "value": 7881},
{"name": "NodeLinkTreeLayout", "value": 12870},
{"name": "PieLayout", "value": 2728},
{"name": "RadialTreeLayout", "value": 12348},
{"name": "RandomLayout", "value": 870},
{"name": "StackedAreaLayout", "value": 9121},
{"name": "TreeMapLayout", "value": 9191}
]
},
{"name": "Operator", "value": 2490},
{"name": "OperatorList", "value": 5248},
{"name": "OperatorSequence", "value": 4190},
{"name": "OperatorSwitch", "value": 2581},
{"name": "SortOperator", "value": 2023}
]
},
{"name": "Visualization", "value": 16540}
]
}
]
}重要的页面html文件,echart_demo.html
<!DOCTYPE html>
<html>
<head>
<title>Echarts 树形图示例</title>
<meta content='width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no' name='viewport' />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<link href='../../assets/stylesheets/bootstrap/bootstrap.css' media='all' rel='stylesheet' type='text/css' />
<style>
*{padding: 0;margin: 0;}
.menu{
/*这个样式不写，右键弹框会一直显示在画布的左下角*/
position: absolute;
background: #ffff;
border-radius: 5px;
left: -99999px;
top: -999999px;
z-index:1;
}
.menu ul{list-style: none}
.menu ul li{
padding: 5px 10px;
color: #228EFB;
border-bottom: 1px dashed #228EFB;
font-size: 17px;
}
.menu ul li:last-child{
border-bottom: none;
}
</style>
</head>
<body class='contrast-blue'>
<div id='wrapper'>
<section id='content'>
<div class="nav-part">
<div class="cur-position risk">
树模型>>编辑
</div>
</div>
<div class="container-fluid">
<div class="querycontext">
</div>
</div>
<div class="tree-container">
<div id="main" style="width:100%;height:1000px;"></div>
</div>
</section>
</div>
<!--右键弹出菜单-->
<div id="rightMenu" class="menu" style="display:none;">
<ul>
<li onclick="editModelNode()">编辑节点</li>
<li onclick="addModelNode()">增加子节点</li>
<li onclick="deleteModelNode('1')">删除当前节点</li>
<li onclick="deleteModelNode('2')">删除子节点</li>
</ul>
</div>
</body>
<script src='https://cdn.bootcss.com/jquery/1.11.1/jquery.min.js' type='text/javascript'></script>
<script src='https://cdn.staticfile.org/echarts/5.1.0/echarts.js' type='text/javascript'></script>
<script type="text/javascript">
var chartDom = document.getElementById('main');
var myChart = echarts.init(chartDom, 'dark');//
var option;
//flare.json是静态JSON文件，为了测试所用，实际应用时替换为接口返回的数据
//注意：json数据格式中子节点的key名必须为children
myChart.showLoading();//echarts自带的Loading遮罩方法
$.getJSON('flare.json', {}, function (data) {
myChart.hideLoading();
data.collapsed=false;
data.children.forEach(function (datum, index) {
datum.collapsed = true
});
option={
tooltip: {
show:true,
trigger: 'item',
triggerOn: 'mousemove',
position:"bottom",
textStyle:{
color:"#228EFB",
fontSize:17
},
extraCssText:'width:300px;white-space:pre-wrap;',
formatter:function(params, ticket, callback){
var tsxx=params.data.describes==""||params.data.describes==null?params.data.name:params.data.describes;
return tsxx;
}
},
series: [
{
type: 'tree',
data: [data],
top: 'middle',
left: 'center',
// bottom: '1%',
// right: '15%',
symbolSize: 15,
itemStyle:{
color: '#228EFB' ,
},
lineStyle:{
color: '#DDD',
},
label: {
color: "#FFF",
position: 'left',
verticalAlign: 'middle',
align: 'right',
fontSize: 18
},
leaves: {
label: {
position: 'right',
verticalAlign: 'middle',
align: 'left'
}
},
emphasis: {
focus: 'descendant'
},
edgeForkPosition: "72%",
roam : true,//鼠标缩放，拖拽整颗树
expandAndCollapse: true,
animationDuration: 550,
animationDurationUpdate: 750
}
]
};
myChart.setOption(option);
}, 'json');
//新增或者修改节点后，调用后台保存或更新数据
function submitForm(){
//请求成功后
var flag=true;//模拟请求接口返回成功
if(flag){
alert(resData.msg);
data=resData.result[0];
if(czlx=="addRoot"){
$("#modelRootId").val(data.id);//根节点
}
data.collapsed=false;
data.children.forEach(function (datum, index) {
datum.collapsed = true
});
option={
tooltip: {
show:true,
trigger: 'item',
triggerOn: 'mousemove',
position:"bottom",
textStyle:{
color:"#228EFB",
fontSize:17
},
extraCssText:'width:300px;white-space:pre-wrap;',
formatter:function(params, ticket, callback){
var tsxx=params.data.describes==""||params.data.describes==null?params.data.name:params.data.describes;
return tsxx;
}
},
series: [
{
type: 'tree',
data: [data],
top: 'middle',
left: 'center',
// bottom: '1%',
// right: '15%',
symbolSize: 15,
itemStyle:{
color: '#228EFB' ,
},
lineStyle:{
color: '#DDD',
},
label: {
color: "#FFF",
position: 'left',
verticalAlign: 'middle',
align: 'right',
fontSize: 18
},
leaves: {
label: {
position: 'right',
verticalAlign: 'middle',
align: 'left'
}
},
emphasis: {
focus: 'descendant'
},
edgeForkPosition: "72%",
roam:true,//鼠标缩放，拖拽整颗树
expandAndCollapse: true,
animationDuration: 550,
animationDurationUpdate: 750
}
]
};
var sfEdit=true;//是否为新增或修改
if(sfEdit){
myChart.clear();
$('.tree-container').click();
}
myChart.setOption(option);
}
}
myChart.on("click", this.treeNodeclick);
// 节点点击事件
function treeNodeclick(param){
/* true 代表点击的是圆点
fasle 表示点击的是当前节点的文本
*/
if(param.event.target.culling === true){
if (typeof param.seriesIndex == 'undefined') {
return;
}
if (param.type == 'click') {
if (!param.data.hasChild) {
if(param.data.collapsed == undefined || param.data.collapsed == true){
console.log("未定义或者是未展开，下次即将展开");
param.data.collapsed=false;
}else{
console.log("下次不展开");
param.data.collapsed=true;
}
return;
}
}
return ;
} else if(param.event.target.culling === false){
// let args = param.data; //当前节点及其子节点的值
// let level = param.data.level; //当前节点的层级 eg:"1-1-0",可以通过level判断当前的层级，从而进行不同的操作
// // this.textNodeclick(args,level);
}
}
/**
* 鼠标右键，弹出右键操作菜单
*/
$("#main").bind("contextmenu", function () { return false; });//防止默认菜单弹出（查看图像,图像另存为等）
var gloab_param=null;
myChart.on("contextmenu", function(params){
gloab_param=params;
$('#rightMenu').css({
'display': 'block',
'left': params.event.offsetX+15,//此处根据自己实际情况调整右键操作菜单显示位置
'top' : params.event.offsetY -110
});
});
/**
* 点击画布的时候隐藏右键菜单
*/
$('.tree-container').click(function () {
$('#rightMenu').css({
'display': 'none',
'left': '-9999px',
'top': '-9999px'
});
});
//编辑节点
function editModelNode(){
//editData为编辑的当前节点数据Obj
var editData=gloab_param.data;
}
//添加子节点
function addModelNode(){
console.log("新增");
}
//删除当前节点
function deleteModelNode(deleteType){
var ts="删除当前节点后，当前节点下所有子节点也会被删除，确定要删除当前节点吗？";
if(window.confirm(ts)){
//此处请求后台删除节点数据
var flag=true;//模拟请求成功，重新渲染整个树
if(flag){
var data=resData.result[0];
data.collapsed=false;
data.children.forEach(function (datum, index) {
datum.collapsed = true
});
option={
tooltip: {
show:true,
trigger: 'item',
triggerOn: 'mousemove',
position:"bottom",
textStyle:{
color:"#228EFB",
fontSize:17
},
extraCssText:'width:300px;white-space:pre-wrap;',
formatter:function(params, ticket, callback){
var tsxx=params.data.describes==""||params.data.describes==null?params.data.name:params.data.describes;
return tsxx;
}
},
series: [
{
type: 'tree',
data: [data],
top: 'middle',
left: 'center',
// bottom: '1%',
// right: '15%',
symbolSize: 15,
itemStyle:{
color: '#228EFB' ,
},
lineStyle:{
color: '#DDD',
},
label: {
color: "#FFF",
position: 'left',
verticalAlign: 'middle',
align: 'right',
fontSize: 18
},
leaves: {
label: {
position: 'right',
verticalAlign: 'middle',
align: 'left'
}
},
emphasis: {
focus: 'descendant'
},
edgeForkPosition: "72%",
roam:true,//鼠标缩放，拖拽整颗树
expandAndCollapse: true,
animationDuration: 550,
animationDurationUpdate: 750
}
]
};
myChart.clear();
$('.tree-container').click();
myChart.setOption(option);
}else{//数据已经清空了，页面reload
window.location.reload();
}
}
}
//根据指定key的值删除对应的对象
function removeByValue(arr, attrKey, attrValue){
var index=0;
for(var i in arr){
if(arr[i][attrKey]==attrValue){
index=i;
break;
}
}
arr.splice(index,1);
}
</script>
</html>如果需要更详细的使用支持，可以私信咨询小编或者评论区留言，小编会在第一时间及时回复。
感觉对您有所帮助的话，还请帮小编点赞收藏加关注哦。