我想用以下代码通过 d3 画一条线。( http://jsfiddle.net/totaljj/L9n7qnv1 )
绘制了x,y轴，但附加d属性时不进入line函数。
可以在第104行调试，看到代码没有进入到行函数。
如有任何帮助，我们将不胜感激。
<!DOCTYPE html>
<html>
<style>
.axis--x path {
display: none;
}
.line {
fill: none;
stroke: steelblue;
stroke-width: 1.5px;
}
</style>
<body>
<!-- Page Content -->
<div>
<svg width="430" height="250"></svg>
</div>
<section>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var data=
'{"recordsFiltered":5,"raCounts":[{"name":"comp_name","values":[{"date_":"2016","actual":170.0,"DT_RowId":"row_null"},{"date_":"2015","actual":198.0,"DT_RowId":"row_null"},{"date_":"2015","actual":149.0,"DT_RowId":"row_null"},{"date_":"2014","actual":197.0,"DT_RowId":"row_null"},{"date_":"2014","actual":146.0,"DT_RowId":"row_null"}],"DT_RowId":"row_null"}],"draw":null,"recordsTotal":5}';
var d = JSON.parse(data);
draw(d.raCounts);
function draw(data){
//svg
var svg = d3.select("svg"),
margin = {top: 100, right: 80, bottom: 30, left: 50},
width = svg.attr("width") - margin.left - margin.right,
height = svg.attr("height") - margin.top - margin.bottom,
g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");
//time
var parseTime = d3.timeParse("%Y%m%d");
//domain
// var x = d3.scaleTime().range([0, width]),
var x = d3.scaleLinear().range([0, width]),
y = d3.scaleLinear().range([height, 0]),
z = d3.scaleOrdinal(d3.schemeCategory10);
//line
var line = d3.line()
.curve(d3.curveBasis)
.x(function(d) {
return x(d.date_); })
.y(function(d) {
return y(d.actual); });
//domain
x.domain(d3.extent(data[0].values, function(d) {
return d.date_; }));
y.domain([
d3.min(data, function(c) {
return d3.min(c.values, function(d) {
return d.actual; }); }),
d3.max(data, function(c) {
return d3.max(c.values, function(d) {
return d.actual; }); })
]);
z.domain(data.map(function(c) {
return c.DT_RowId; }));
//axis
g.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x));
g.append("g")
.attr("class", "axis axis--y")
.call(d3.axisLeft(y))
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", "0.71em")
.attr("fill", "#000")
.text("count");
var ra = g.selectAll(".ra")
.data(data)
.enter().append("g")
.attr("class", "ra");
//ra line
ra.append("path")
.attr("class", "line")
.attr("d",
function(d) { return
line(d.values); })
.style("stroke-dasharray", ("1","1"));
}
</script>
</section>
</body>
</html>
最佳答案
JavaScript 并不总是要求在行尾使用分号。 It will automatically insert them in certain situations ，而你调用 line 函数的地方就是其中之一:
.attr("d",
function(d) { return
line(d.values); })
因此，修复是在 return 之后删除换行符:
.attr("d",
function(d) { return line(d.values); })
关于javascript - d3js不进入行功能，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41423470/