SVG stroke animation principle, svg stroke Animation

SVG stroke animation principle, svg stroke Animation

The principle of SVG stroke animation is actually very simple., Mainly using the following two attributes

Stroke-dasharrayCreate a dotted line to make it black and white,

Stroke-dashoffsetOffset the dotted line to the beginning. The 1500 here is not accurate. I can take it as needed. The following describes how to get the length through JS.

The animation reduces the dotted line offset, so the solid line will gradually leak out.

 

JS get Length

Var path = document. querySelector ('path ');

Var length = path. getTotalLength ();

Then, change path. style. strokeDasharray and path. style. strokeDashoffset to the obtained length.