A demonstration of using transition.tween to interpolate text. The transition.text method doesn’t do this by default because it’s often distracting; instead, it just sets the new text value when the transition starts. Another way to transition text is to cross-fade.
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January 23, 2020 06:59
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Text Transition I
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| license: gpl-3.0 | |
| redirect: https://observablehq.com/@d3/transition-texttween |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| h1 { | |
| font: 400 120px/500px "Helvetica Neue"; | |
| text-align: center; | |
| width: 960px; | |
| height: 500px; | |
| margin: 0; | |
| } | |
| </style> | |
| <h1>0</h1> | |
| <script src="//d3js.org/d3.v4.0.0-alpha.23.min.js"></script> | |
| <script> | |
| var format = d3.format(",d"); | |
| d3.select("h1") | |
| .transition() | |
| .duration(2500) | |
| .on("start", function repeat() { | |
| d3.active(this) | |
| .tween("text", function() { | |
| var that = d3.select(this), | |
| i = d3.interpolateNumber(that.text().replace(/,/g, ""), Math.random() * 1e6); | |
| return function(t) { that.text(format(i(t))); }; | |
| }) | |
| .transition() | |
| .delay(1500) | |
| .on("start", repeat); | |
| }); | |
| </script> |
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