JS library for drawing graphs with the ability to set different colors on the same line?

Question

JavaScript

I need to build a simple graph based on some data. There is, for example, a Y scale with values ​​0-50-100. The part of the graph that is below the value of 50 should be highlighted in a different color. Are there ready-made solutions for this task? A JS solution is preferable, but PHP is also suitable

Answer 1

Take, for example, d3js.org
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