mbostock/.block

## .block
license: gpl-3.0

## README.md

      
        

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              README.md
            
          
        
      
      
    Using explicit delays to chain transitions. Compare to using transition.each. In response to a Stack Overflow question.

  

  

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

div {
  background: white;
  border: solid 1px #ccc;
  padding: 20px;
  margin: 20px;
}

</style>
<div>update</div>
<div>exit</div>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

var duration = 750;

var div = d3.select("body").selectAll("div")
    .data(["enter", "update"], function(d) { return d || this.textContent; });

// 2. update
div.transition()
    .duration(duration)
    .delay(!div.exit().empty() * duration)
    .style("background", "orange");

// 3. enter
div.enter().append("div")
    .text(function(d) { return d; })
    .style("opacity", 0)
  .transition()
    .duration(duration)
    .delay((!div.exit().empty() + !div.enter().empty()) * duration)
    .style("background", "green")
    .style("opacity", 1);

// 1. exit
div.exit()
    .style("background", "red")
  .transition()
    .duration(duration)
    .style("opacity", 0)
    .remove();

</script>

## thumbnail.png

      
        

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              thumbnail.png
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	div {
	background: white;
	border: solid 1px #ccc;
	padding: 20px;
	margin: 20px;
	}

	</style>
	<div>update</div>
	<div>exit</div>
	<script src="//d3js.org/d3.v3.min.js"></script>
	<script>

	var duration = 750;

	var div = d3.select("body").selectAll("div")
	.data(["enter", "update"], function(d) { return d \|\| this.textContent; });

	// 2. update
	div.transition()
	.duration(duration)
	.delay(!div.exit().empty() * duration)
	.style("background", "orange");

	// 3. enter
	div.enter().append("div")
	.text(function(d) { return d; })
	.style("opacity", 0)
	.transition()
	.duration(duration)
	.delay((!div.exit().empty() + !div.enter().empty()) * duration)
	.style("background", "green")
	.style("opacity", 1);

	// 1. exit
	div.exit()
	.style("background", "red")
	.transition()
	.duration(duration)
	.style("opacity", 0)
	.remove();

	</script>