Why ES6 is not responsible? Is my android not supported?

Answer 1

Your Android webview maybe too old, not support ES6, try to upgrade it.
Meanwhile you can use this code to run ES6:

https://code.sololearn.com/Wm8a0UNI9Kis/?ref=app

Answer 2

ha.na then that maybe your code has syntax error, please share the code out.

Answer 3

thank you so much, but code don't run

Answer 4

excuse me,the code in your answer don't run