Kre*_*hen 5 javascript treemap d3.js
如何捕获最后一个节点的click事件?
我按照本教程(http://bl.ocks.org/ganeshv/6a8e9ada3ab7f2d88022)制作了树形图。我的目的是要使最后一个节点可单击,然后将节点数据发送到服务器。
我在js文件中的代码是:
function display(d) {
lastGroupArray = [];
// collectLastGroup(d);
console.log(lastGroupArray);
grandparent
.datum(d.parent)
.on("click", transition)
.select("text")
.text(name(d));
var g1 = svg.insert("g", ".grandparent")
.datum(d)
.attr("class", "depth");
var g = g1.selectAll("g")
.data(d._children)
.enter().append("g");
g.filter(function (d) { return d._children; })
.classed("children", true)
.on("click", transition);
var children = g.selectAll(".child")
.data(function(d) { return d._children || [d]; })
.enter().append("g");
children.append("rect")
.attr("class", "child")
.call(rect)
.append("title")
.text(function(d) { return d.name + " (" + formatNumber(d.value) + ")"; });
//append child text
children.append("text")
.attr("class", "ctext")
.text(function(d) { return d.name; })
.call(text2);
//append parent text
g.append("rect")
.attr("class", "parent")
.call(rect);
var ccc = g.selectAll("rect").on("click", function (d){
if(typeof d.lastGroup !== 'undefined'){
d.lastGroup.forEach( function (dd) {
// lastGroupArray.push(new LastGroup(dd));
console.log(dd.filePath);
});
}
})
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我上面的函数只有在拥有父节点时才能捕获最后一个节点。如果在加载树图时该节点是最后一个子节点,则该功能将不起作用。收款人是加载树形图时的最后一个节点。

这是我的JSON数据:收款人在底部,只有一个父级,即根“ digit-first2”。
{
"children": [
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result1.csv",
"name": "0~2",
"value": 112
}],
"children": [
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result3.csv",
"name": "0~2",
"value": 218
}],
"children": [{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result7.csv",
"name": "0~2",
"value": 836
}],
"name": "Payee",
"value": 836
}],
"name": "Tran Type",
"value": 218
},
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result5.csv",
"name": "0~2",
"value": 834
}],
"name": "Payee",
"value": 834
}
],
"name": "[Code-Finger-Print, [Memo]]",
"value": 112
},
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result2.csv",
"name": "0~2",
"value": 138
}],
"children": [{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result6.csv",
"name": "0~2",
"value": 766
}],
"name": "Payee",
"value": 766
}],
"name": "Tran Type",
"value": 138
},
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result4.csv",
"name": "0~2",
"value": 731
}],
"name": "Payee",
"value": 731
}
],
"name": "digit-first2"
}
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我上面的函数仅在根不是最后一个节点的父节点时才起作用。我的问题是,如果根节点是该节点的父节点,则如何捕获该节点的click事件。
小智 -1
有一个简单的例子;
function display(d) {
grandparent
.datum(d.parent)
.on("click", transition)
.select("text")
.text(name(d));
var g1 = svg.insert("g", ".grandparent")
.datum(d)
.attr("class", "depth");
var g = g1.selectAll("g")
.data(d._children)
.enter().append("g");
g.filter(function (d) { return d._children; })
.classed("children", true)
.on("click", transition);
var children = g.selectAll(".child")
.data(function (d) { return d._children || [d]; })
.enter().append("g");
children.append("rect")
.attr("class", "child")
.call(rect)
.append("title")
.text(function (d) {
return d.key + " (" + formatNumber(d.value) + ")";
});
children.append("text")
.attr("class", "ctext")
.text(function (d) { return d.key; })
.call(text2);
g.append("rect")
.attr("class", "parent")
.call(rect);
var t = g.append("text")
.attr("class", "ptext")
.attr("dy", ".75em")
t.append("tspan")
.text(function (d) { return d.key; });
t.append("tspan")
.attr("dy", "1.0em")
.text(function (d) { return formatNumber(d.value); });
t.call(text);
var isDeph = false;
g.selectAll("rect")
.style("fill", function (d) {
if (d.values != null) {
isDeph = true;
}
return d.color;
})
.attr('onclick', function (d) {
if (!isDeph) {
return d.data
}
return ''
});
function transition(d) {
if (transitioning || !d)
return;
transitioning = true;
var g2 = display(d),
t1 = g1.transition().duration(750),
t2 = g2.transition().duration(750);
// Update the domain only after entering new elements.
x.domain([d.x, d.x + d.dx]);
y.domain([d.y, d.y + d.dy]);
// Enable anti-aliasing during the transition.
svg.style("shape-rendering", null);
// Draw child nodes on top of parent nodes.
svg.selectAll(".depth").sort(function (a, b) {
return a.depth - b.depth;
});
// Fade-in entering text.
g2.selectAll("text").style("fill-opacity", 0);
// Transition to the new view.
t1.selectAll(".ptext").call(text).style("fill-opacity", 0);
t1.selectAll(".ctext").call(text2).style("fill-opacity", 0);
t2.selectAll(".ptext").call(text).style("fill-opacity", 1);
t2.selectAll(".ctext").call(text2).style("fill-opacity", 1);
t1.selectAll("rect").call(rect);
t2.selectAll("rect").call(rect);
// Remove the old node when the transition is finished.
t1.remove().each("end", function () {
svg.style("shape-rendering", "crispEdges");
transitioning = false;
});
}
return g;
}
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