13.delay-all-each-transition

This is an example copied from Interactive Data Visualization for the web.

I updated it with d3.v4.

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
    
		<title>D3: Transitioning to randomized data values</title>
    
		<script src="https://d3js.org/d3.v4.min.js"></script>
    
		<style type="text/css">
			/* No style rules here yet */		
		</style>
    
	</head>
	<body>
	
		<p>Click on this text to update the chart with new data values as many times as you like!</p>
			
		<script type="text/javascript">

var w = 600;
			var h = 250;

var svg = d3.select("body")
						.append("svg")
						.attr("width", w)
						.attr("height", h);

var dataset = [ 5, 10, 13, 19, 21, 25, 22, 18, 15, 13,
							11, 12, 15, 20, 18, 17, 16, 18, 23, 25 ];
      
			var xScale = d3.scaleBand()
							.domain(d3.range(dataset.length))
							.rangeRound([0, w])
      				.padding(0.05);

var yScale = d3.scaleLinear()
							.domain([0, d3.max(dataset)])
							.range([h, 0]);

svg.selectAll("rect")
			   .data(dataset)
			   .enter()
			   .append("rect")
			   .attr("x", function(d, i) {
			   		return xScale(i);
			   })
			   .attr("y", function(d) {
			   		return yScale(d);
			   })
			   .attr("width", xScale.bandwidth())
			   .attr("height", function(d) {
			   		return h - yScale(d);
			   })
			   .attr("fill", function(d) {
					return "rgb(0, 0, " + (d * 10) + ")";
			   });

svg.selectAll("text")
			   .data(dataset)
			   .enter()
			   .append("text")
			   .text(function(d) {
			   		return d;
			   })
			   .attr("text-anchor", "middle")
			   .attr("x", function(d, i) {
			   		return xScale(i) + xScale.bandwidth() / 2;
			   })
			   .attr("y", function(d) {
			   		return yScale(d) + 14;
			   })
			   .attr("font-family", "sans-serif")
			   .attr("font-size", "11px")
			   .attr("fill", "white");

d3.select("p")
				.on("click", function() {

// ---- create a random array when clicked -----------------
					var numValues = dataset.length;						
					dataset = [];  						 				
					for (var i = 0; i < numValues; i++) {	
						var newNumber = Math.floor(Math.random() * 25); // New random integer (0-25)
						dataset.push(newNumber);			 			// Add new number to array
					}

// ---- delay(1000): all elements together delay 1s ------------
// ---- delay(function(d,i){}): each element delay diff duration -----------   
					svg.selectAll("rect")
					   .data(dataset)
					   .transition()
//           	 .delay(1000)
					   .delay(function(d, i) { 
						   return i / dataset.length * 1000;
					   })
					   .duration(1000)
					   .attr("y", function(d) {
					   		return yScale(d);
					   })
					   .attr("height", function(d) {
					   		return h - yScale(d);
					   })
					   .attr("fill", function(d) {
							return "rgb(0, 0, " + (d * 10) + ")";
					   });

//Update all labels
					svg.selectAll("text")
					   .data(dataset)
					   .transition()
//           	 .delay(1000)
					   .delay(function(d, i) {
						   return i / dataset.length * 1000;
					   })
					   .duration(1000)
					   .text(function(d) {
					   		return d;
					   })
					   .attr("x", function(d, i) {
					   		return xScale(i) + xScale.bandwidth() / 2;
					   })
					   .attr("y", function(d) {
					   		return yScale(d) + 14;
					   });
					   				
				});

</script>
	</body>
</html>

Updated missing url https:d3js.org/d3.v4.min.js to https://d3js.org/d3.v4.min.js

https:d3js.org/d3.v4.min.js