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Frameworks & web · #chartjs
Learn how Chart.js scriptable options let you style individual points based on data values—without mutating your dataset—and how to keep performance smooth with memoization.
Chart.js preserves a 2:1 canvas ratio by default, so charts overflow wide cards or float in whitespace. The two-option fix, the container-height rule, and when to keep the default.
Chart.js's built-in decimation plugin cuts rendered points from 50k to ~500 using LTTB, preserving visual trends while restoring 60fps interaction. Requires 'index' scale and sorted data; tooltips need a callback for original values.
Learn how to make Chart.js charts resize fluidly with responsive:true and maintainAspectRatio:false, including a code example, limits, and verification steps.
Learn how to make Chart.js charts resize with their container while preserving or intentionally changing the aspect ratio, with configuration, limits, and verification steps.
Learn how to correctly use the .update() method in Chart.js to handle dynamic data streams, avoid memory leaks, and optimize rendering performance using update modes.
Guidance on deciding between Chart.js maintainAspectRatio true or false, with constraints, trade‑offs, implementation steps, and verification tips.
Learn how to implement smooth, real-time data updates in Chart.js using array mutation and the update() method to avoid UI flicker and memory leaks.
A technical guide on choosing between responsive and fixed canvas dimensions in Chart.js, covering aspect ratio trade-offs and implementation patterns.
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