How to achieve the small arrow on Baidu map road map?

as shown in the figure, there are small white arrows on the roadmap indicating the direction. For the need to use leaflet as a track in the project, how can the small arrows on the line be realized?

Oct.09,2021

the idea is to do the path. All the time, the advantage is that the arrowhead looks cool.

another idea is to create a slow gif arrow.


there are no arrows, and it is obvious that there are dynamic segments

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For

code, see https://codeshelper.com/q/10.

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