Chart.js height issue with maintainAspectRatio:false

Limits of maintainAspectRatio:false with responsive:true in Chart.js flex containers

0 reputation · 14 Aug 2020, 22:17 UTC

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When using Chart.js 3.x with the options responsive:true and maintainAspectRatio:false inside a flexbox container, the chart should expand to fill the available width while adapting its height to the container’s constraints.

However, the documentation does not specify the exact algorithm Chart.js uses to compute the resulting height, leading to inconsistent rendering—some browsers show overflow, others leave blank space. This uncertainty makes it difficult to rely on the chart’s size for precise layouts.

What factors influence the calculated height?

Can developers enforce a specific height or prevent overflow without breaking responsiveness?

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Limits of maintainAspectRatio:false with responsive:true in Chart.js flex containers

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