javascript - Regarding the problem of HighMaps rendering very slowly under IE8

Question

Using highMaps to make a map of China, the style is as follows:

Rendering is very slow under IE8, but the speed is acceptable under chrome.

I would like to ask what is the problem and is there any way to test the rendering time of highcharts

Answer 1

Chrome uses SVG rendering, and IE8 uses VML rendering. The performance is inherently poor... There is an official documentation

Created a picture from the document: