add connect button for ws html5 (#621)

zhaomingwork

2023-06-12 d7e3ae17c3ac056752ecf5c41ff9a96645fcad49

1
2
3
4
5
6
7
8
9
x    1
xx    2
xxx    3
xl    4
l    5
lx    6
lxx    7
lxxx    8
xc    9