console
var width = 500,
height = 500;
var root = {
"name": "中国",
"children": [{
"name": "浙江",
"children": [{
"name": "杭州"
},
{
"name": "宁波"
},
{
"name": "温州"
},
{
"name": "绍兴"
}
]
},
{
"name": "广西",
"children": [{
"name": "桂林",
"children": [{
"name": "秀峰区"
},
{
"name": "叠彩区"
},
{
"name": "象山区"
},
{
"name": "七星区"
}
]
},
{
"name": "南宁"
},
{
"name": "柳州"
},
{
"name": "防城港"
}
]
},
{
"name": "黑龙江",
"children": [{
"name": "哈尔滨"
},
{
"name": "齐齐哈尔"
},
{
"name": "牡丹江"
},
{
"name": "大庆"
}
]
},
{
"name": "新疆",
"children": [{
"name": "乌鲁木齐"
},
{
"name": "克拉玛依"
},
{
"name": "吐鲁番"
},
{
"name": "哈密"
}
]
}
]
};
//- - - - 精简版 - - - - //
// 布局
var tree = d3.layout.tree()
.size([width, height - 200])
.separation(function (a, b) {
return (a.parent == b.parent ? 1 : 2);
});
// 绘制对角线
var diagonal = d3.svg.diagonal()
.projection(function (d) {
return [d.y, d.x];
});
// 创建svg
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(40,0)");
var nodes = tree.nodes(root);
var links = tree.links(nodes);
var link = svg.selectAll(".link")
.data(links)
.enter()
.append("path")
.attr("class", "link")
.attr("d", diagonal);
var node = svg.selectAll(".node")
.data(nodes)
.enter()
.append("g")
.attr("class", "node")
.attr("transform", function (d) {
return "translate(" + d.y + "," + d.x + ")";
})
node.append("circle")
.attr("r", 4.5);
node.append("text")
.attr("dx", function (d) {
return d.children ? -8 : 8;
})
.attr("dy", 3)
.style("text-anchor", function (d) {
return d.children ? "end" : "start";
})
.text(function (d) {
return d.name;
});
//- - - - 折叠版 - - - - //
/**
// Helper functions
function jsonToD3(data) {
// taken from:
// http://bl.ocks.org/mbostock/4063582
// http://bl.ocks.org/mbostock/4339083
var container = document.getElementById('d3Frame');
while (container.firstChild) {
container.removeChild(container.firstChild);
}
// 设置边距
var margin = {
top: 5,
right: 120,
bottom: 5,
left: 120
};
// 设置宽高度
var width = 960 - margin.right - margin.left;
var height = 500 - margin.top - margin.bottom;
var i = 0,
duration = 500;
var root = data;
// 数据转换
var tree = d3.layout.tree().size([height, width]);
// 绘制对角线
var diagonal = d3.svg.diagonal().projection(function (d) {
return [d.y, d.x];
});
var svg = d3.select("#d3Frame").append("svg")
.attr("width", '100%')
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root.x0 = height / 2;
root.y0 = 0;
function collapse(d) {
if (d.children) {
d._children = d.children;
d._children.forEach(collapse);
d.children = null;
}
}
root.children.forEach(collapse);
update(root);
d3.select('#d3Frame').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 * 180;
});
// 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 ? -10 : 10;
}).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", 4.5).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);
}
}
function exportTreeToJSON(tree) {
this._tree = tree;
var manager = this;
var json = '';
renderBranch(null);
json = '[' + json.substring(0, json.length - 1).replace(/\}\,\]/g, '}]');
json += (json.slice(-1) === "]") ? '}]' : ']';
function renderBranch(parentId) {
for (var i = 0; i < manager._tree.length; i++) {
if (manager._tree[i].parentId == parentId) {
json += JSON.stringify(manager._tree[i]);
// has children
if (findObjectByKey(manager._tree, "parentId", manager._tree[i].id)) {
json = json.substring(0, json.length - 1);
json += ', "children": [';
renderBranch(manager._tree[i].id);
json += ']}';
}
// has siblings
for (var n = 0; n < manager._tree.length; n++) {
if ((manager._tree[n] !== manager._tree[i]) && (manager._tree[n].parentId === manager._tree[i].parentId)) {
json += ',';
break;
}
}
}
}
}
return JSON.parse('{ "name" : "root","children": ' + json + '}');
}
function findObjectByKey(array, key, value) {
for (var i = 0; i < array.length; i++) {
if (array[i][key] === value) {
return array[i];
}
}
return null;
}
jsonToD3(root); */
<script src="//d3js.org/d3.v3.min.js">
</script>
<body>
<div id="d3Frame"></div>
</body>
body {
font-family: 'Indie Flower', cursive;
color: whitesmoke;
fill: whitesmoke;
background-color: #333;
}
.link {
fill: none;
stroke: gray;
stroke-width: 1.5px;
}
#d3Frame {
padding-left: 10px;
}