按形状隐藏一组节点后
cy.elements('[shape="ellipse"]').addClass('hidden');
我留下了一些没有剩余可见边缘（传入或传出）的节点，我也想隐藏它们。但经过相当长的时间试图找到看不见的根和叶并对它们进行联合和区分后，我根本看不出什么是简单的解决方案。
非常感谢任何帮助！
你的方法很好，只是需要一些调整才能达到你想要的结果。我将为每个非椭圆节点添加一个过滤器，并删除没有可见连接边的节点。我使用函数
.hidden()cy.nodes('[shape="ellipse"]').addClass("hidden");
cy.nodes('[shape!="ellipse"]').each(function(node) {
if (node.connectedEdges().hidden()) {
node.addClass("hidden");
}
});
这之所以有效是因为我添加了样式。显示值为none的节点会自动隐藏其边缘，因此无需手动隐藏边缘：
{
selector: '.hidden',
css: {
'display': 'none'
}
}
我在点击事件侦听器中的 dagre 图中尝试了这一点。我还将 addClass 更改为toggleClass，您可以通过重复单击来删除和添加类：
var cy = window.cy = cytoscape({
container: document.getElementById('cy'),
boxSelectionEnabled: false,
autounselectify: true,
style: [{
selector: 'node',
css: {
'content': 'data(id)',
'text-valign': 'center',
'text-halign': 'center',
'height': '60px',
'width': '60px',
'border-color': 'black',
'border-opacity': '1',
'border-width': '10px',
'shape': 'data(shape)'
}
},
{
selector: '$node > node',
css: {
'padding-top': '10px',
'padding-left': '10px',
'padding-bottom': '10px',
'padding-right': '10px',
'text-valign': 'top',
'text-halign': 'center',
'background-color': '#bbb'
}
},
{
selector: 'edge',
css: {
'target-arrow-shape': 'triangle'
}
},
{
selector: ':selected',
css: {
'background-color': 'black',
'line-color': 'black',
'target-arrow-color': 'black',
'source-arrow-color': 'black'
}
},
{
selector: '.hidden',
css: {
'display': 'none'
}
}
],
elements: {
nodes: [{
data: {
id: 'n0',
shape: 'ellipse'
}
},
{
data: {
id: 'n1',
shape: 'ellipse'
}
},
{
data: {
id: 'n2',
shape: 'ellipse'
}
},
{
data: {
id: 'n3',
shape: 'ellipse'
}
},
{
data: {
id: 'n4',
shape: 'ellipse'
}
},
{
data: {
id: 'n5',
shape: 'ellipse'
}
},
{
data: {
id: 'n6',
shape: 'rectangle'
}
},
{
data: {
id: 'n7',
shape: 'ellipse'
}
},
{
data: {
id: 'n8',
shape: 'rectangle'
}
},
{
data: {
id: 'n9',
shape: 'ellipse'
}
},
{
data: {
id: 'n10',
shape: 'ellipse'
}
},
{
data: {
id: 'n11',
shape: 'ellipse'
}
},
{
data: {
id: 'n12',
shape: 'ellipse'
}
},
{
data: {
id: 'n13',
shape: 'rectangle'
}
},
{
data: {
id: 'n14',
shape: 'ellipse'
}
},
{
data: {
id: 'n15',
shape: 'rectangle'
}
},
{
data: {
id: 'n16',
shape: 'ellipse'
}
}
],
edges: [{
data: {
source: 'n0',
target: 'n1'
}
},
{
data: {
source: 'n1',
target: 'n2'
}
},
{
data: {
source: 'n1',
target: 'n3'
}
},
{
data: {
source: 'n2',
target: 'n7'
}
},
{
data: {
source: 'n2',
target: 'n11'
}
},
{
data: {
source: 'n2',
target: 'n16'
}
},
{
data: {
source: 'n3',
target: 'n4'
}
},
{
data: {
source: 'n3',
target: 'n16'
}
},
{
data: {
source: 'n4',
target: 'n5'
}
},
{
data: {
source: 'n4',
target: 'n6'
}
},
{
data: {
source: 'n6',
target: 'n8'
}
},
{
data: {
source: 'n8',
target: 'n9'
}
},
{
data: {
source: 'n8',
target: 'n10'
}
},
{
data: {
source: 'n11',
target: 'n12'
}
},
{
data: {
source: 'n12',
target: 'n13'
}
},
{
data: {
source: 'n13',
target: 'n14'
}
},
{
data: {
source: 'n13',
target: 'n15'
}
},
]
},
layout: {
name: 'dagre',
padding: 5
}
});
cy.unbind("click");
cy.bind("click", function(event) {
cy.nodes('[shape!="ellipse"]').toggleClass("hidden");
cy.nodes('[shape="ellipse"]').each(function(node) {
if (node.connectedEdges().hidden()) {
node.toggleClass("hidden");
}
});
});body {
font: 14px helvetica neue, helvetica, arial, sans-serif;
}
#cy {
height: 100%;
width: 75%;
position: absolute;
left: 0;
top: 0;
float: left;
}<html>
<head>
<meta charset=utf-8 />
<meta name="viewport" content="user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, minimal-ui">
<script src="https://cdnjs.cloudflare.com/ajax/libs/cytoscape/3.2.17/cytoscape.min.js"></script>
<script src="https://unpkg.com/[email protected]/dist/jquery.js"></script>
<script src="https://unpkg.com/[email protected]/dist/dagre.js"></script>
<script src="https://cdn.rawgit.com/cytoscape/cytoscape.js-dagre/1.5.0/cytoscape-dagre.js"></script>
</head>
<body>
<div id="cy"></div>
</body>
</html>if (ele.visible()) {
ele.style( 'display', 'none' );
} else if (ele.hidden()) {
ele.style( 'display', 'element' );
}
您还可以通过以下方式找到明显断开连接的节点：
const visibleNodes = cy.nodes().filter(":visible").nodes();
const disconnectedNodes = visibleNodes.filter(n => {
return n.neighborhood(":visible").length === 0;
}).nodes();
当节点的邻域中没有可见节点时，此过滤器返回
true最后，您可以应用您的类来隐藏断开连接的节点：
disconnectedNodes.addClass("hidden");