in javascript, i sent an array with size of 600 000 rows, and the web keep crashing and plotly error of length came up, with everything works fine with 10 000 rows of array … i was wondering is it the limitation size of array the plotting cant handle?
That depends on the trace type(s) you want to plot.
For example, 600 000 pts for scattergl and heatmap should be a walk in the park. That many points for scatter and other SVG-based trace types will yes blow up your browser.