D3.js 前端报错 Uncaught TypeError: a[b].target.className.indexOf is not a function at qu.v.ni（……）

Uncaught TypeError: a[b].target.className.indexOf is not a function at qu.v.ni (eval at xhr.onreadystatechange (demo05.html:419), :405:129)

Some time ago after the discovery in the wrong time to do the force discovery figure, suddenly the front console on the brush out hundreds of error, and later extensive searches
Chrome's translation feature activated, turn off the translation function, error disappears