有人可以建议如何在启动时打包所有东西吗？我想在启动后仅显示主节点。非常感谢
最佳答案
我修改了您现有的代码，将所有子元素折叠到根元素。
注释了代码更改。希望对您有帮助。
<!DOCTYPE html>
<html>
<meta charset="UTF-8">
<!-- load the d3.js library -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.23.0/ramda.js"></script>
<style>
.node {
cursor: pointer;
circle {
fill: #aae;
/* stroke: steelblue;*/
stroke-width: 2px;
}
text {
font: 12px sans-serif;
fill: #000;
}
rect {
fill: transparent;
stroke-width: 2px;
rx: 5px;
ry: 5px;
}
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.tree {
margin-bottom: 10px;
overflow: auto;
}
svg text {
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
</style>
<body>
<div id="tree"></div>
<script>
function buildHorizontalTree(treeData, treeContainerDom) {
var margin = { top: 40, right: 40, bottom: 20, left: 50 };
var width = 960 - margin.right - margin.left;
var height = 400 - margin.top - margin.bottom;
var i = 0, duration = 750;
var rect = { width: 140, height: 40, hDist: 60, rx: 5, ry: 5 };
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.source(function (d) {
return { x: d.source.x + rect.height / 2, y: d.source.y + rect.width };
})
.target(function (d) {
return { x: d.target.x + rect.height / 2, y: d.target.y };
})
.projection(function (d) {
return [d.y, d.x];
});
var svg = d3.select(treeContainerDom)
.append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
//Changes added for collapsing starts//
function collapse(d) {
if (d.children) {
d._children = d.children;
d._children.forEach(collapse);
d.children = null;
}
}
var root = treeData;
//Changes added for collapsing ends//
update(root);
function update(source) {
// Compute the new tree layout
var nodes = tree.nodes(root),
links = tree.links(nodes);
// Normalize for fixed-depth
nodes.forEach(function (d) {
d.y = d.depth * (rect.width + rect.hDist);
// console.log(d.x - 0);
});
// Declare the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function (d) { return d.id || (d.id = ++i); });
// Enter the nodes
var nodeEnter = node.enter()
.append("g")
.attr("class", "node")
.attr("transform", function (d) {
return "translate(" + (source.y0 || 0) + "," + (source.x0 || 0) + ")";
})
.on("click", nodeclick);
nodeEnter.append("rect")
.attr("width", rect.width / 2)
.attr("height", rect.height / 2)
.attr("stroke", function (d) {
return d.children || d._children ? "steelblue" : "#00c13f";
})
.style("fill", function (d) {
return d.children || d._children ? "lightsteelblue" : "#fff";
});
nodeEnter.append("text")
.attr("y", function (d) {
return rect.height / 2;
})
.attr("dy", ".4em")
.attr("x", rect.width / 2)
.attr("text-anchor", "middle")
.text(function (d) { return d.name; })
.style("fill-opacity", 1e-6);
// Transition nodes to their new position
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function (d) {
const x = d.x;
const y = d.y;
return `translate(${y},${x})`;
});
nodeUpdate.select("rect")
.attr("width", rect.width)
.attr("height", rect.height)
.style("fill", function (d) {
return d._children ? "lightsteelblue" : "#fff";
});
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position
var nodeExit = node.exit()
.transition()
.duration(duration)
.attr("transform", function (d) {
// console.log('removed id:', d.id);
const x = source.y + rect.width;
const y = source.x + rect.height / 2;
return `translate(${x},${y})`;
})
.remove();
// minify the rect to very small
nodeExit.select("rect")
.attr("width", 1e-6)
.attr("height", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
// Declare the links…
var link = svg.selectAll("path.link")
.data(links, function (d) { return d.target.id; });
// Enter the links
link.enter()
.insert("path", "g")
.attr("class", "link")
.attr("d", function (d) {
var x = source.x0 ? source.x0 - rect.height / 4 : 0;
var y = source.y0 ? source.y0 - rect.width : 0;
var s = { x, y: y };
var t = { x: (source.x0 || 0), y: (source.y0 || 0) };
return diagonal({ source: s, target: t });
});
// Transition links to their new position.
link.transition()
.duration(duration)
.attr("d", diagonal);
// Transition exiting nodes to the parent's new position.
link.exit()
.transition()
.duration(duration)
.attr("d", function (d) {
var src = { x: source.x, y: source.y };
var target = { x: source.x, y: source.y + rect.width };
return diagonal({ source: src, target: target });
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function (d) {
d.x0 = d.x + rect.height / 4;
d.y0 = d.y + rect.width;
});
}
//Only children will be collpased
root.children.forEach(collapse);
// To collapse all to root element
collapse(root);
//Changes added for collapsing ends//
update(root);
// Toggle children on click.
function nodeclick(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
} // BuildHorizontalTree
var treeData =
{
name: "Enterprise",
children: [
{
name: "IT Department",
children: [
{
name: "Team Lead 1",
children: [
{
name: "Senior Dev 1",
children: []
},
{
name: "Senior Dev 2",
children: []
},
{
name: "Senior Dev 4",
children: []
},
{
name: "Middle Dev 5",
children: []
},
{
name: "Junior Dev 5",
children: []
},
]
},
{
name: "Team Lead 2",
children: [
{
name: "Senior Dev 1",
children: []
},
{
name: "Senior Dev 2",
children: []
},
{
name: "Senior Dev 4",
children: []
},
{
name: "Middle Dev 5",
children: []
},
{
name: "Junior Dev 5",
children: []
},
]
}
]
},
{
name: "Manager",
children: []
}
]
};
buildHorizontalTree(treeData, "#tree");
</script>
</body>
</html>关于javascript - D3 水平树 - 启动时折叠所有内容，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60152287/