这就是我正在使用的:
var data =
{
name: "flare",
children: [
{name: "analytics", children:[{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"}]},
{name: "analytics", children:[{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"}]},
{name: "analytics", children:[{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"}]},
{name: "analytics", children:[{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"}]},
{name: "analytics", children:[{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"}]},
{name: "analytics", children:[{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"}]},
{name: "analytics", children:[{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"}]},
{name: "analytics", children:[{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"},{name: "testera1"}]},
]
};
var width = 960,
height = 500,
root;
var force = d3.layout.force()
.linkDistance(80)
.charge(-120)
.gravity(.05)
.size([width, height])
.on("tick", tick);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var link = svg.selectAll(".link"),
node = svg.selectAll(".node");
root = data;
update();
function update() {
var nodes = flatten(root),
links = d3.layout.tree().links(nodes);
// Restart the force layout.
force
.nodes(nodes)
.links(links)
.start();
// Update links.
link = link.data(links, function(d) { return d.target.id; });
link.exit().remove();
link.enter().insert("line", ".node")
.attr("class", "link");
// Update nodes.
node = node.data(nodes, function(d) { return d.id; });
node.exit().remove();
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.on("click", click)
.call(force.drag);
nodeEnter.append("circle")
.attr("r", function(d) { return Math.sqrt(d.size) / 10 || 4.5; });
nodeEnter.append("text")
.attr("dy", ".35em")
.text(function(d) { return d.name; });
node.select("circle")
.style("fill", color);
}
function tick() {
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
}
function color(d) {
return d._children ? "#3182bd" // collapsed package
: d.children ? "#c6dbef" // expanded package
: "#fd8d3c"; // leaf node
}
// Toggle children on click.
function click(d) {
if (d3.event.defaultPrevented) return; // ignore drag
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update();
}
// Returns a list of all nodes under the root.
function flatten(root) {
var nodes = [], i = 0;
function recurse(node) {
if (node.children) node.children.forEach(recurse);
if (!node.id) node.id = ++i;
nodes.push(node);
}
recurse(root);
return nodes;
}
.node circle {
cursor: pointer;
stroke: #3182bd;
stroke-width: 1.5px;
}
.node text {
font: 10px sans-serif;
pointer-events: none;
text-anchor: middle;
}
line.link {
fill: none;
stroke: #9ecae1;
stroke-width: 1.5px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<script src="//d3js.org/d3.v3.min.js"></script>
基本上,一切正常,除了这将从所有扩展的孩子开始,但我需要它与崩溃的孩子一起加载。我试过去试试
function collapse(d) {
if (d.children) {
d._children = d.children;
d._children.forEach(collapse);
d.children = null;
}
但它没有帮助。我试图用以下方法将它们折叠起来:
function collapseAll(){
root.children.forEach(collapse);
collapse(root);
update(root);
}
两个都没有工作。
答案 0 :(得分:2)
collapse
函数的实现似乎是正确的。在你的collapseAll
函数中,你为根节点的每个子节点以及根节点本身调用collapse
,因此在树上重复两次。
请注意,在折叠节点之前必须调用update
函数,以便绘制它们。