我得到了d3.js代码来创建一个树，我很乐意这样做，但我无法弄清楚如何启动树崩溃。
我发现this post解释了如何操作，但它似乎对我的代码没有任何作用：Edit the javascript to switch the _children and children attributes for every node. This could be done like so
var treeData = [
{
"name": "Product",
"parent": "null",
"children": [
<!-------------- BRANCH ----------->
{
"name": "Servers",
"parent": "Top Level",
"children": [{
"name": "Options (Hard disk / RAM / PSU / Network cards etc)",
"parent": "Servers"
}, {
"name": "Software licensing – Microsoft O/S?",
"parent": "Servers"
}, {
"name": "Switching – HP / Cisco",
"parent": "Servers"
}, {
"name": "UPS – APC",
"parent": "Servers"
}, {
"name": "Cabling",
"parent": "Servers"
}, {
"name": "Warranty – Ecare+ / HP Care Pack?",
"parent": "Servers"
}, {
"name": "Engineer Installation – on-site / remote log-in?",
"parent": "Servers"
}, {
"name": "Config centre – Build & test server and parts prior to delivery",
"parent": "Servers"
}, {
"name": "Telephone support credits",
"parent": "Servers"
}
]
},
<!-------------- BRANCH ----------->
{
"name": "PC/Laptop/Workstation",
"parent": "Top Level",
"children": [{
"name": "Monitor",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Docking Station",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Microsoft Office license",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Carry Case (laptop)",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Accessories – Mouse/Keyboard/Riser/Keylock",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Config centre – desktop imaging/adding 2nd HD or RAM",
"parent": "PC/Laptop/Workstation"
}, {
"name": "On-site installation – desktop rollout",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Telephone Support credits",
"parent": "PC/Laptop/Workstation"
}
]
},
<!-------------- BRANCH ----------->
{
"name": "Switches",
"parent": "Top Level",
"children": [{
"name": "SFP/Transceivers",
"parent": "Switches"
}, {
"name": "Cables",
"parent": "Switches"
}, {
"name": "Config Centre – pre-delivery config work",
"parent": "Switches"
}, {
"name": "Network cards",
"parent": "Switches"
}, {
"name": "On-site installation",
"parent": "Switches"
}
]
},
<!-------------- BRANCH ----------->
<!-------------- END ----------->
]
},
];
// ************** Generate the tree diagram *****************
var margin = {
top: 20,
right: 120,
bottom: 20,
left: 120
},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function (d) {
return [d.y, d.x];
});
var svg = d3.select("body").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 + ")");
root = treeData[0];
root.x0 = height / 2;
root.y0 = 0;
update(root);
d3.select(self.frameElement).style("height", "500px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function (d) {
d.y = d.depth * 250;
});
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function (d) {
return d.id || (d.id = ++i);
});
// Enter any new nodes at the parent's previous position.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function (d) {
return "translate(" + source.y0 + "," + source.x0 + ")";
})
.on("click", click);
nodeEnter.append("circle")
.attr("r", 1e-6)
.style("fill", function (d) {
return d._children ? "lightsteelblue" : "#fff";
});
nodeEnter.append("text")
.attr("x", function (d) {
return d.children || d._children ? -13 : 13;
})
.attr("dy", ".35em")
.attr("text-anchor", function (d) {
return d.children || d._children ? "end" : "start";
})
.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) {
return "translate(" + d.y + "," + d.x + ")";
});
nodeUpdate.select("circle")
.attr("r", 10)
.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) {
return "translate(" + source.y + "," + source.x + ")";
})
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(links, function (d) {
return d.target.id;
});
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function (d) {
var o = {
x: source.x0,
y: source.y0
};
return diagonal({
source: o,
target: o
});
});
// 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 o = {
x: source.x,
y: source.y
};
return diagonal({
source: o,
target: o
});
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function (d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
} .node {
cursor: pointer;
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
background-color:##
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.0.4/d3.min.js"></script>
答案 0 :(得分：2)
根节点需要更改的是children到_children。
var treeData = [
{
"name": "Product",
"parent": "null",
"_children": [
<!-------------- BRANCH ----------->
{
"name": "Servers",
"parent": "Top Level",
"_children": [{
"name": "Options (Hard disk / RAM / PSU / Network cards etc)",
"parent": "Servers"
}, {
"name": "Software licensing – Microsoft O/S?",
"parent": "Servers"
}, {
"name": "Switching – HP / Cisco",
"parent": "Servers"
}, {
"name": "UPS – APC",
"parent": "Servers"
}, {
"name": "Cabling",
"parent": "Servers"
}, {
"name": "Warranty – Ecare+ / HP Care Pack?",
"parent": "Servers"
}, {
"name": "Engineer Installation – on-site / remote log-in?",
"parent": "Servers"
}, {
"name": "Config centre – Build & test server and parts prior to delivery",
"parent": "Servers"
}, {
"name": "Telephone support credits",
"parent": "Servers"
}
]
},
<!-------------- BRANCH ----------->
{
"name": "PC/Laptop/Workstation",
"parent": "Top Level",
"_children": [{
"name": "Monitor",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Docking Station",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Microsoft Office license",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Carry Case (laptop)",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Accessories – Mouse/Keyboard/Riser/Keylock",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Config centre – desktop imaging/adding 2nd HD or RAM",
"parent": "PC/Laptop/Workstation"
}, {
"name": "On-site installation – desktop rollout",
"parent": "PC/Laptop/Workstation"
}, {
"name": "Telephone Support credits",
"parent": "PC/Laptop/Workstation"
}
]
},
<!-------------- BRANCH ----------->
{
"name": "Switches",
"parent": "Top Level",
"_children": [{
"name": "SFP/Transceivers",
"parent": "Switches"
}, {
"name": "Cables",
"parent": "Switches"
}, {
"name": "Config Centre – pre-delivery config work",
"parent": "Switches"
}, {
"name": "Network cards",
"parent": "Switches"
}, {
"name": "On-site installation",
"parent": "Switches"
}
]
},
<!-------------- BRANCH ----------->
<!-------------- END ----------->
]
},
];
// ************** Generate the tree diagram *****************
var margin = {
top: 20,
right: 120,
bottom: 20,
left: 120
},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function (d) {
return [d.y, d.x];
});
var svg = d3.select("body").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 + ")");
root = treeData[0];
root.x0 = height / 2;
root.y0 = 0;
update(root);
d3.select(self.frameElement).style("height", "500px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function (d) {
d.y = d.depth * 250;
});
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function (d) {
return d.id || (d.id = ++i);
});
// Enter any new nodes at the parent's previous position.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function (d) {
return "translate(" + source.y0 + "," + source.x0 + ")";
})
.on("click", click);
nodeEnter.append("circle")
.attr("r", 1e-6)
.style("fill", function (d) {
return d._children ? "lightsteelblue" : "#fff";
});
nodeEnter.append("text")
.attr("x", function (d) {
return d.children || d._children ? -13 : 13;
})
.attr("dy", ".35em")
.attr("text-anchor", function (d) {
return d.children || d._children ? "end" : "start";
})
.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) {
return "translate(" + d.y + "," + d.x + ")";
});
nodeUpdate.select("circle")
.attr("r", 10)
.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) {
return "translate(" + source.y + "," + source.x + ")";
})
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(links, function (d) {
return d.target.id;
});
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function (d) {
var o = {
x: source.x0,
y: source.y0
};
return diagonal({
source: o,
target: o
});
});
// 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 o = {
x: source.x,
y: source.y
};
return diagonal({
source: o,
target: o
});
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function (d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
} .node {
cursor: pointer;
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
background-color:##
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
请注意，您可能需要全屏筛选片段以查看其结果。