Simple Line Graph using SVG and d3.js

<html>
	<head>
		<title>Simple Line Graph using SVG and d3.js</title>
		<script src="https://cdn.jsdelivr.net/npm/d3@2.10.3/d3.v2.js"></script>
		<style>
			/* tell the SVG path to be a thin blue line without any area fill */
			path {
				stroke: steelblue;
				stroke-width: 1;
				fill: none;
			}
			
			.axis {
			  shape-rendering: crispEdges;
			}

.x.axis line {
			  stroke: lightgrey;
			}

.x.axis .minor {
			  stroke-opacity: .5;
			}

.x.axis path {
			  display: none;
			}

.y.axis line, .y.axis path {
			  fill: none;
			  stroke: #000;
			}
		</style>
	</head>
	<body>

// X scale will fit all values from data[] within pixels 0-w
		var x = d3.scale.linear().domain([0, data.length]).range([0, w]);
		// Y scale will fit values from 0-10 within pixels h-0 (Note the inverted domain for the y-scale: bigger is up!)
		var y = d3.scale.linear().domain([0, 10]).range([h, 0]);
			// automatically determining max range can work something like this
			// var y = d3.scale.linear().domain([0, d3.max(data)]).range([h, 0]);

// create a line function that can convert data[] into x and y points
		var line = d3.svg.line()
			// assign the X function to plot our line as we wish
			.x(function(d,i) { 
				// verbose logging to show what's actually being done
				console.log('Plotting X value for data point: ' + d + ' using index: ' + i + ' to be at: ' + x(i) + ' using our xScale.');
				// return the X coordinate where we want to plot this datapoint
				return x(i); 
			})
			.y(function(d) { 
				// verbose logging to show what's actually being done
				console.log('Plotting Y value for data point: ' + d + ' to be at: ' + y(d) + " using our yScale.");
				// return the Y coordinate where we want to plot this datapoint
				return y(d); 
			})

// Add an SVG element with the desired dimensions and margin.
			var graph = d3.select("#graph").append("svg:svg")
			      .attr("width", w + m[1] + m[3])
			      .attr("height", h + m[0] + m[2])
			    .append("svg:g")
			      .attr("transform", "translate(" + m[3] + "," + m[0] + ")");

// create yAxis
			var xAxis = d3.svg.axis().scale(x).tickSize(-h).tickSubdivide(true);
			// Add the x-axis.
			graph.append("svg:g")
			      .attr("class", "x axis")
			      .attr("transform", "translate(0," + h + ")")
			      .call(xAxis);

// create left yAxis
			var yAxisLeft = d3.svg.axis().scale(y).ticks(4).orient("left");
			// Add the y-axis to the left
			graph.append("svg:g")
			      .attr("class", "y axis")
			      .attr("transform", "translate(-25,0)")
			      .call(yAxisLeft);
			
  			// Add the line by appending an svg:path element with the data line we created above
			// do this AFTER the axes above so that the line is above the tick-lines
  			graph.append("svg:path").attr("d", line(data));

</script>

</body>
</html>

Modified http://mbostock.github.com/d3/d3.v2.js to a secure url

https://mbostock.github.com/d3/d3.v2.js