Javascript ror指的是链接。forEach…。错误显示Uncaught Reference error:links.forEach不是函数@CameronTaylor您在data.json中的数据与https://api.myjson.com/bins/10kk91_Javascript_Json_D3.js

Javascript ror指的是链接。forEach…。错误显示Uncaught Reference error:links.forEach不是函数@CameronTaylor您在data.json中的数据与https://api.myjson.com/bins/10kk91

javascript json d3.js

Javascript ror指的是链接。forEach…。错误显示Uncaught Reference error:links.forEach不是函数@CameronTaylor您在data.json中的数据与https://api.myjson.com/bins/10kk91,javascript,json,d3.js,Javascript,Json,D3.js,ror指的是链接。forEach…。错误显示Uncaught Reference error:links.forEach不是函数@CameronTaylor您在data.json中的数据与https://api.myjson.com/bins/10kk91？嗯……我正在谷歌控制台中查看它，它看起来像是有转义字符``在出现双引号之前。我猜它不知怎么被双重编码了。@CameronTaylor我建议先清理数据，然后再试一次，希望这样可以解决它。确保它是有效的JSON。在编写文件之前，我在Python代

ror指的是

链接。forEach…

。错误显示

Uncaught Reference error:links.forEach不是函数

@CameronTaylor您在

data.json中的数据与https://api.myjson.com/bins/10kk91？嗯……我正在谷歌控制台中查看它，它看起来像是有转义字符``在出现双引号之前。我猜它不知怎么被双重编码了。@CameronTaylor我建议先清理数据，然后再试一次，希望这样可以解决它。确保它是有效的JSON。在编写文件之前，我在Python代码中对它进行了双重编码。非常感谢您的解释和代码。
{"source":"Michael Scott","target":"Jim Halpert","type":"pro"},
{"source":"Jim Halpert","target":"Dwight Schrute","type":"pro"}

var links = [
{"source":"Michael Scott","target":"Jim Halpert","type":"pro"},
{"source":"Jim Halpert","target":"Dwight Schrute","type":"pro"}
];

var nodes = {};

links.forEach(function(link) {
link.source = nodes[link.source] || (nodes[link.source] = {name: link.source});
  link.target = nodes[link.target] || (nodes[link.target] = {name: link.target});
});

var width = 2000,
height = 1000;

var force = d3.layout.force()
.nodes(d3.values(nodes))
.links(links)
.size([width, height])
.linkDistance(60)
.charge(-300)
.on("tick", tick)
.start();

var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);

svg.append("defs").selectAll("marker")
.data(["pro"])
.enter().append("marker")
.attr("id", function(d) { return d; })
.attr("viewBox", "0 -5 10 10")
.attr("refX", 15)
.attr("refY", -1.5)
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("orient", "auto")
.append("path")
.attr("d", "M0,-5L10,0L0,5");

var path = svg.append("g").selectAll("path")
.data(force.links())
.enter().append("path")
.attr("class", function(d) { return "link " + d.type; })
.attr("marker-end", function(d) { return "url(#" + d.type + ")"; });

var circle = svg.append("g").selectAll("circle")
.data(force.nodes())
.enter().append("circle")
.attr("r", 6)
.call(force.drag);

var text = svg.append("g").selectAll("text")
.data(force.nodes())
.enter().append("text")
.attr("x", 8)
.attr("y", ".31em")
.text(function(d) { return d.name; });

function tick() {
  path.attr("d", linkArc);
  circle.attr("transform", transform);
  text.attr("transform", transform);
}

function linkArc(d) {
  var dx = d.target.x - d.source.x,
  dy = d.target.y - d.source.y,
  dr = Math.sqrt(dx * dx + dy * dy);
  return "M" + d.source.x + "," + d.source.y + "A" + dr + "," + dr + " 0 0,1 " + d.target.x + "," + d.target.y;
}

function transform(d) {
  return "translate(" + d.x + "," + d.y + ")";
}

</script>

d3.json("data.json", function(error, data) {
});

<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

d3.json("data.json", function(error, data) {
});


var nodes = {};

data.forEach(function(link) {
  link.source = nodes[link.source] || (nodes[link.source] = {name: link.source});
  link.target = nodes[link.target] || (nodes[link.target] = {name: link.target});
});

var width = 2000,
height = 1000;

var force = d3.layout.force()
.nodes(d3.values(nodes))
.data(data)
.size([width, height])
.linkDistance(60)
.charge(-300)
.on("tick", tick)
.start();

var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);

svg.append("defs").selectAll("marker")
.data(["pro"])
.enter().append("marker")
.attr("id", function(d) { return d; })
.attr("viewBox", "0 -5 10 10")
.attr("refX", 15)
.attr("refY", -1.5)
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("orient", "auto")
.append("path")
.attr("d", "M0,-5L10,0L0,5");

var path = svg.append("g").selectAll("path")
.data(force.data())
.enter().append("path")
.attr("class", function(d) { return "link " + d.type; })
.attr("marker-end", function(d) { return "url(#" + d.type + ")"; });

var circle = svg.append("g").selectAll("circle")
.data(force.nodes())
.enter().append("circle")
.attr("r", 6)
.call(force.drag);

var text = svg.append("g").selectAll("text")
.data(force.nodes())
.enter().append("text")
.attr("x", 8)
.attr("y", ".31em")
.text(function(d) { return d.name; });

function tick() {
path.attr("d", linkArc);
circle.attr("transform", transform);
text.attr("transform", transform);
}

function linkArc(d) {
var dx = d.target.x - d.source.x,
  dy = d.target.y - d.source.y,
  dr = Math.sqrt(dx * dx + dy * dy);
  return "M" + d.source.x + "," + d.source.y + "A" + dr + "," + dr + " 0 0,1 " + d.target.x + "," + d.target.y;
}

function transform(d) {
  return "translate(" + d.x + "," + d.y + ")";
}

</script>