Modify DOM Element Style With D3 V4 style Operator
  Duration: 3:46
Part of Course: D3 V4 Tutorial
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Takeaways:

  • D3 selections allow you to modify DOM element style with the .attr operator
  • D3 selections come with a style operator that lets you shortcut how you set the style
  • D3 style operator works as a getter and setter
  • For it to work as a setter, you pass in an style you want to define and the value you want to set it to
  • You can set the style value as a constant you pass in or you can have a function (named or anonymous) evaluated for each element in the selection
  • For it to work as a getter, you pass in an style whose value you want and you do not pass in a value
  • If the style exists, then you get the value
  • If the sttyle does not exist, then you get a ""
  • Using the D3 .style as a setter, if you pass in a "null" as the value, then it deletes the style from all of the elements in the selection

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