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by robbiejs
2155 days ago
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I wish you best of luck. I understand your decision to go with canvas. I have experimented with canvas quite a bit as well, as I could not get HTML DOM performance quite right initially. How I solved this for DataGridXL: Only columns are DOM nodes. Rows are not actually nodes, but values are spaced vertically using CSS and with a simple newline (\n) character in between. The grid lines are just that: they're grid lines that are repositioned using CSS animation when the user is scrolling. This means that when a user is scrolling, the DOM does not have to update by, let's say 20 rows x 10 columns = 200 DOM nodes. Only 10 column DOM nodes need to be redrawn. That's how DGXL works with DOM & HTML but is still in many cases faster than a canvas implementation. Plus it still is accessible. Try zooming the page or use CTRL+F. You can find and select any (visible) value inside the data grid. No problems there. |
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Canvas can be made fully accessible and screen reader friendly. See how Google Sheets has done. But yes, its not natively accessible like HTML.