效果图：
条形图：
目录结构：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link href="css/style.css" media="screen" rel="stylesheet" type="text/css"/>
<title>Linechart1</title>
</head>
<body>
<div id="container"></div>
<script src="https://d3js.org/d3.v5.min.js"></script>
<script src="js/index.js"></script>
</body>
</html>
svg rect{ fill:#339999; } svg rect:hover { cursor: pointer; fill: #66cccc; }
year,population
1953,5.94
1964,6.95
1982,10.08
1990,11.34
2000,12.66
2010,13.40
/垂直Bar，加刻度 d3.csv("Data/data.csv",function (d) { return { // year: new Date(+d.year, 0, 1), // convert "Year" column to Date year: d.year+"年", population: +d.population // convert "population" column to number }; }).then(function (data) { console.log(data); var //data=[1,8,5,6,8,9,3,5,2,20], width=1000, height=500, margin={left:30,top:30,right:30,bottom:30}, svg_width=width+margin.left+margin.right, svg_height=height+margin.top+margin.bottom; //离散缩放 population=>[0,width] var scale_x=d3.scaleBand() .domain(data.map(function (d) { return d.year; })) .range([0,width]) .padding(0.1); //线性缩放 var scale_y=d3.scaleLinear() .domain([0,d3.max(data,function (d) { return d.population; })]) .range([height,0]) var svg=d3.select("#container") .append("svg") .attr("width",svg_width) .attr("height",svg_height) var chart=svg.append("g") .attr("transform","translate("+margin.left+","+margin.top+")"); var x_axis_color="steelblue", y_axis_color="steelblue"; var x_axis=chart.append('g') .call(d3.axisBottom(scale_x)) .attr("transform","translate(0,"+height+")"); x_axis.selectAll("path") .attr("stroke",x_axis_color) x_axis.selectAll("line") .attr("stroke",x_axis_color) x_axis.selectAll("text") .attr("font-size",'2em') var y_axis=chart.append('g') .call(d3.axisLeft(scale_y)); y_axis.selectAll("path") .attr("stroke",y_axis_color) y_axis.selectAll("line") .attr("stroke",y_axis_color) y_axis.selectAll("text") .attr("font-size",'2em') //Y轴注解 chart.append("text") .text("(亿)") // .attr("text-anchor","end") // .attr("transform","rotate(-90)") .attr("dy","1em") //X轴注解 chart.append("text") .text("(年)") // .attr("text-anchor","end") .attr("transform","translate("+width+","+height+")") .attr("dy","1em") var bar=chart.selectAll(".bar") .data(data) .enter() .append("g") .attr("transform",function (d,i) { return "translate("+scale_x(d.year)+",0)" }) bar.append("rect") .attr("y",function (d) { return scale_y(d.population); }) .attr("height",function (d) { return height-scale_y(d.population); }) .attr("width",scale_x.bandwidth() ) .attr("class",".rect") bar.append("text") .text(function (d) { return d.population+"亿"; }) .attr("y",function (d) { return scale_y(d.population); }) .attr("x",scale_x.bandwidth() /2) .attr("dy","1em") .style("text-anchor","middle") .style("fill","white") })
参考教程：https://www.imooc.com/learn/103