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OOP approach in d3.v4
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .bar { | |
| fill: #74BBFB; | |
| } | |
| </style> | |
| <body> | |
| <div id="barChart"></div> | |
| </body> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var initBarGraph = { | |
| xScale: '', | |
| yScale: '', | |
| svg: '', | |
| margin: '', | |
| xaxisDomain: '', | |
| yMax: '', | |
| draw: function(config) { | |
| data = config.data, | |
| domEle = config.element, | |
| margin = {top: 20, right: 20, bottom: 30, left: 40}, | |
| width = 660 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| xaxisDomain = data.map(function(d) { return d.name; }); | |
| yMax = d3.max(data, function(d) { return d.mark; }); | |
| xScale = d3.scaleBand() | |
| .domain(xaxisDomain) | |
| .range([0, width]) | |
| .padding(0.1) | |
| yScale = d3.scaleLinear() | |
| .domain([0, yMax]) | |
| .range([height, 0]) | |
| svg = d3.select("#"+domEle).append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| svg.append("g") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(d3.axisBottom(xScale)); | |
| svg.append("g") | |
| .call(d3.axisLeft(yScale)); | |
| svg.selectAll(".bar") | |
| .data(data) | |
| .enter().append("rect") | |
| .attr("class", "bar") | |
| .attr("x", function(d) { return xScale(d.name); }) | |
| .attr("width", xScale.bandwidth()) | |
| .attr("y", function(d) { return yScale(d.mark); }) | |
| .attr("height", function(d) { return height - yScale(d.mark); }); | |
| } | |
| } | |
| var dataSet = [{"name":"Bob","mark":33},{"name":"Robin","mark":12},{"name":"Anne","mark":41},{"name":"Mark","mark":16},{"name":"Joe","mark":59},{"name":"Eve","mark":38},{"name":"Karen","mark":21},{"name":"Kirsty","mark":25},{"name":"Chris","mark":30},{"name":"Lisa","mark":47},{"name":"Tom","mark":5},{"name":"Stacy","mark":20},{"name":"Charles","mark":13},{"name":"Mary","mark":29}]; | |
| initBarGraph.draw({ | |
| data: dataSet, | |
| element: 'barChart' | |
| }); | |
| </script> | |
| </body> |
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Object oriented approach to create a simple bar graph