About ES6 syntax not recognized by Android browser

These days to write code, in the Highcharts code to use some ES syntax

Works on both PC and iphone and cannot be displayed on Android

Have not known for some reason. Later a little bit of view was found to be the following two sentences ES6 code

1:

. Map (Item=>item.replace (/'/g, "))

This sentence removes the quotation marks from the array. Each bit in the array at this time is not a mere number

2:

. Map (v = +v)

This sentence removes the quotation marks from the array. Each bit in the array at this time is a simple number

About ES6 syntax not recognized by Android browser