Data Visualization with D3.js Cookbook by Unknown

Author:Unknown
Language: eng
Format: epub, pdf
Publisher: Packt Publishing

How it works...

In this example, we have constructed a custom animation that moves integer from 0 to 100. For such a simple animation, of course we could have accomplished it using D3 transition and tweening. However, a simple example like this avoids any distraction from the technique itself. Additionally, even in this simple example, the timer-based solution is arguably simpler and more flexible than a typical transition-based solution. The power house of this animation lies in the countup function (see line A):

function countup(target){ // <-A d3.timer(function(){ // <-B var value = countdown.attr("value"); if(value == target) return true; // <-C countdown.attr("value", ++value); // <-D }); }

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