我在这里尝试使用 cytoscape.js 库实现的目标是，当我单击一条边时，将显示该边的 ID 而不是悬停。
例如，只有当我点击边缘时，ab id 才会显示。我不想在单击时显示节点的 ID。
提前感谢您的帮助。
有没有比 cytoscape.js 包含更多示例的文档？
document.addEventListener("DOMContentLoaded", function() {
var cy = (window.cy = cytoscape({
container: document.getElementById("cy"),
style: [{
selector: "node",
style: {
content: "data(id)"
}
},
{
selector: "edge",
style: {
"curve-style": "bezier",
"target-arrow-shape": "triangle"
}
}
],
elements: {
nodes: [{
data: {
id: "a"
}
}, {
data: {
id: "b"
}
}],
edges: [{
data: {
id: "ab",
source: "a",
target: "b"
}
}]
},
layout: {
name: "grid"
}
}));
function makePopper(ele) {
let ref = ele.popperRef(); // used only for positioning
ele.tippy = tippy(ref, { // tippy options:
content: () => {
let content = document.createElement('div');
content.innerHTML = ele.id();
return content;
},
trigger: 'manual' // probably want manual mode
});
}
cy.ready(function() {
cy.elements().forEach(function(ele) {
makePopper(ele);
});
});
cy.elements().unbind('mouseover');
cy.elements().bind('mouseover', (event) => event.target.tippy.show());
cy.elements().unbind('mouseout');
cy.elements().bind('mouseout', (event) => event.target.tippy.hide());
});body {
font-family: helvetica neue, helvetica, liberation sans, arial, sans-serif;
font-size: 14px
}
#cy {
position: absolute;
left: 0;
top: 0;
bottom: 0;
right: 0;
z-index: 1;
}
h1 {
opacity: 0.5;
font-size: 1em;
font-weight: bold;
}<head>
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, maximum-scale=1">
<script src="https://unpkg.com/cytoscape/dist/cytoscape.min.js"></script>
<script src="https://unpkg.com/popper.js@1.14.7/dist/umd/popper.js"></script>
<script src="https://cdn.jsdelivr.net/npm/cytoscape-popper@1.0.4/cytoscape-popper.min.js"></script>
<script src="https://unpkg.com/tippy.js@4.0.1/umd/index.all.min.js"></script>
<link rel="stylesheet" href="https://unpkg.com/tippy.js@4.0.1/index.css" />
</head>
<body>
<div id="cy"></div>
</body>最佳答案
这是基本的 cytoscape.js 功能。您正在使用这两行作为事件触发器:
cy.elements().unbind('mouseover');
cy.elements().bind('mouseover', (event) => event.target.tippy.show());
cy.elements().unbind('mouseout');
cy.elements().bind('mouseout', (event) => event.target.tippy.hide());
如果你看一下代码，你会注意到两件事:
- 您正在调用 .bind()在 cy.elements() 上运行，从而调用 cytoscape.js 图中每个元素的绑定(bind)
- 您正在使用 mouse-over和 mouse-out触发 popper 工具提示的事件
简单的修复是这样的:
cy.nodes().unbind('mouseover');
cy.nodes().bind('mouseover', (event) => event.target.tippy.show());
cy.nodes().unbind('mouseout');
cy.nodes().bind('mouseout', (event) => event.target.tippy.hide());
cy.edges().unbind('mousedown');
cy.edges().bind('mousedown ', (event) => event.target.tippy.show());
cy.edges().unbind('mouseup');
cy.edges().bind('mouseup', (event) => event.target.tippy.hide());
在您的代码中，这看起来像这样:
document.addEventListener("DOMContentLoaded", function() {
var cy = (window.cy = cytoscape({
container: document.getElementById("cy"),
style: [{
selector: "node",
style: {
content: "data(id)"
}
},
{
selector: "edge",
style: {
"curve-style": "bezier",
"target-arrow-shape": "triangle"
}
}
],
elements: {
nodes: [{
data: {
id: "a"
}
}, {
data: {
id: "b"
}
}],
edges: [{
data: {
id: "ab",
source: "a",
target: "b"
}
}]
},
layout: {
name: "grid"
}
}));
function makePopper(ele) {
let ref = ele.popperRef(); // used only for positioning
ele.tippy = tippy(ref, { // tippy options:
content: () => {
let content = document.createElement('div');
content.innerHTML = ele.id();
return content;
},
trigger: 'manual' // probably want manual mode
});
}
cy.ready(function() {
cy.elements().forEach(function(ele) {
makePopper(ele);
});
});
cy.nodes().unbind('mouseover');
cy.nodes().bind('mouseover', (event) => event.target.tippy.show());
cy.nodes().unbind('mouseout');
cy.nodes().bind('mouseout', (event) => event.target.tippy.hide());
cy.edges().unbind('mousedown');
cy.edges().bind('mousedown', (event) => event.target.tippy.show());
cy.edges().unbind('mouseup');
cy.edges().bind('mouseup', (event) => event.target.tippy.hide());
});body {
font-family: helvetica neue, helvetica, liberation sans, arial, sans-serif;
font-size: 14px
}
#cy {
position: absolute;
left: 0;
top: 0;
bottom: 0;
right: 0;
z-index: 1;
}
h1 {
opacity: 0.5;
font-size: 1em;
font-weight: bold;
}<head>
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, maximum-scale=1">
<script src="https://unpkg.com/cytoscape/dist/cytoscape.min.js"></script>
<script src="https://unpkg.com/popper.js@1.14.7/dist/umd/popper.js"></script>
<script src="https://cdn.jsdelivr.net/npm/cytoscape-popper@1.0.4/cytoscape-popper.min.js"></script>
<script src="https://unpkg.com/tippy.js@4.0.1/umd/index.all.min.js"></script>
<link rel="stylesheet" href="https://unpkg.com/tippy.js@4.0.1/index.css" />
</head>
<body>
<div id="cy"></div>
</body>关于javascript - 单击时显示边 ID，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/62063700/