我有一个强制导向图，我想在鼠标上更改节点中的文本。我试图将"full_name":的数据放在数据数组中，然后在鼠标悬停时调用它，就像我调用蓝色矩形图像一样。但它似乎不起作用，我没有得到任何错误。所以我不知道是什么问题..
您可以在此处查看和修改示例：http://jsfiddle.net/dzorz/CqaLh/
和脚本看起来像这样：
var data = {"nodes":[
{"name":"Action 1", "type":2, "slug": "", "entity":"employee" },
{"name":"Action 2", "type":3, "slug": "", "entity":"employee" },
{"name":"Action 4", "type":5, "slug": "", "value":265000, "entity":"employee"},
{"name":"Action 5", "type":6, "slug": "", "value":23000, "entity":"employee"},
{"name":"Action 3", "type":4, "slug": "", "value":115000, "entity":"employee"},
{"name":"YHO", "full_name":"Yahoo", "type":1, "slug": "www.yahoo.com", "entity":"company", "img_hrefD":"http://img4host.net/upload/30143226522090da3be7a.jpg", "img_hrefL":"http://img4host.net/upload/30145118522095467b7e3.jpg"},
{"name":"GGL", "full_name":"Google", "type":1, "slug": "www.google.com", "entity":"company", "img_hrefD":"http://img4host.net/upload/30143226522090da3be7a.jpg", "img_hrefL":"http://img4host.net/upload/30145118522095467b7e3.jpg" },
{"name":"BNG", "full_name":"Bing", "type":1, "slug": "www.bing.com", "entity":"company", "img_hrefD":"http://img4host.net/upload/30143226522090da3be7a.jpg", "img_hrefL":"http://img4host.net/upload/30145118522095467b7e3.jpg" },
{"name":"YDX", "full_name":"Yandex", "type":1, "slug": "", "entity":"company", "img_hrefD":"http://img4host.net/upload/30143226522090da3be7a.jpg", "img_hrefL":"http://img4host.net/upload/30145118522095467b7e3.jpg" }
],
"links":[
{"source":0,"target":3,"value":10},
{"source":4,"target":3,"value":1},
{"source":1,"target":7,"value":10},
{"source":2,"target":4,"value":10},
{"source":4,"target":7,"value":1},
{"source":4,"target":5,"value":10},
{"source":4,"target":6,"value":10},
{"source":8,"target":4,"value":1}
]
}
var w = 560,
h = 500,
radius = d3.scale.log().domain([0, 312000]).range(["10", "50"]);
var vis = d3.select("body").append("svg:svg")
.attr("width", w)
.attr("height", h);
vis.append("defs").append("marker")
.attr("id", "arrowhead")
.attr("refX", 25 + 3) /*must be smarter way to calculate shift*/
.attr("refY", 2)
.attr("markerWidth", 6)
.attr("markerHeight", 4)
.attr("orient", "auto")
.append("path")
.attr("d", "M 0,0 V 4 L6,2 Z"); //this is actual shape for arrowhead
//d3.json(data, function(json) {
var force = self.force = d3.layout.force()
.nodes(data.nodes)
.links(data.links)
.distance(150)
.charge(-1000)
.size([w, h])
.start();
var link = vis.selectAll("line.link")
.data(data.links)
.enter().append("svg:line")
.attr("class", function (d) { return "link" + d.value +""; })
.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; })
.attr("marker-end", function(d) {
if (d.value == 1) {return "url(#arrowhead)"}
else { return " " }
;});
function openLink() {
return function(d) {
var url = "";
if(d.slug != "") {
url = d.slug
} //else if(d.type == 2) {
//url = "clients/" + d.slug
//} else if(d.type == 3) {
//url = "agencies/" + d.slug
//}
window.open("//"+url)
}
}
var node = vis.selectAll("g.node")
.data(data.nodes)
.enter().append("svg:g")
.attr("class", "node")
.call(force.drag);
node.append("circle")
.attr("class", function(d){ return "node type"+d.type})
.attr("r", function(d) { return radius(d.value) || 10 })
//.style("fill", function(d) { return fill(d.type); })
node.append("svg:image")
.attr("class", function(d){ return "circle img_"+d.name })
.attr("xlink:href", function(d){ return d.img_hrefD})
.attr("x", "-36px")
.attr("y", "-36px")
.attr("width", "70px")
.attr("height", "70px")
.on("click", openLink())
.on("mouseover", function (d) { if(d.entity == "company")
{
d3.select(this).attr("width", "90px")
.attr("x", "-46px")
.attr("y", "-36.5px")
.attr("xlink:href", function(d){ return d.img_hrefL});
}
})
.on("mouseout", function (d) { if(d.entity == "company")
{
d3.select(this).attr("width", "70px")
.attr("x", "-36px")
.attr("y", "-36px")
.attr("xlink:href", function(d){ return d.img_hrefD});
}
});
node.append("svg:text")
.attr("class", function(d){ return "nodetext title_"+d.name })
.attr("dx", 0)
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.style("fill", "white")
.text(function(d) { return d.name })
.on("mouseover", function (d) { if(d.entity == "company"){
d3.select(this).text(function(d) { return d.full_name })
}
});
force.on("tick", function() {
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 + ")"; });
});
//});
的CSS：
@charset "utf-8";
/* CSS Document */
.link10 { stroke: #ccc; stroke-width: 3px; stroke-dasharray: 3, 3; }
.link1 { stroke: #000; stroke-width: 3px;}
.nodetext { pointer-events: none; font: 14px sans-serif; font-weight:bold;}
.node.type1 {
fill:brown;
}
.node.type2 {
fill:#337147;
}
.node.type3 {
fill:blue;
}
.node.type4 {
fill:red;
}
.node.type5 {
fill:#1BC9E0;
}
.node.type6 {
fill:#E01B98;
}
image.circle {
cursor:pointer;
}
.fadein{
display:none;
font-size:20px;
}
.rectD{
background-color:#000000;
width:70px;
height:30px
}
.rectL{
background-color:#000000;
width:90px;
height:30px
}
甚至可以在加载所有内容后更改文本吗？
请帮忙
答案 0 :(得分：10)
每个节点都有一个图像和一个与之关联的文本元素。图像和文本元素的鼠标悬停事件相互干扰，因为它们占据相同的空间。
我分叉了你的jsfiddle并为节点创建了一个鼠标悬停监听器，并将两个事件放在同一个函数中：
node.on("mouseover", function (d) {
d3.select(this).select('text')
.text(function(d){
return d.full_name;
})
if (d.entity == "company") {
d3.select(this).select('image')
.attr("width", "90px")
.attr("x", "-46px")
.attr("y", "-36.5px")
.attr("xlink:href", function (d) {
return d.img_hrefL
});
}
});
（节点上有一个类似的监听器，用于mouseout以反转这些更改）。