FAQ: Introduction to D3 - Chaining and Returning

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This community-built FAQ covers the “Chaining and Returning” exercise from the lesson “Introduction to D3”.

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This exercise can be found in the following Codecademy content:

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[spacetyrant]

We had the following code in the exercise that adds <div> elements based on the number of data points. What if we already had some <div> elements on index.html, but only wanted to add enough additional <div> elements to make up the difference between what’s there and the number of data points? Currently, it seems to be all or nothing – the existing <div> elements do seem to get associated with a data point, but it doesn’t render in index.html.

let dataset = [55,34,23,22,59];

d3.select("body")
 .selectAll("div")
   .data(dataset)
   .enter()
 .append("div")
   .text("Some text");