Scratch basic html5 coding(I think)

# When green flag clicked
# set rotation style [left-right v]
# if <<key (right arrow v) pressed?> or <key (left arrow v) pressed>> then
# switch costume to (X walking 1 v)

# else
# switch costume to (X step v)
# end

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This is how I think scratch(and turbowarp) HTML5 scripting works.
(Note: this is some scripting I made from turbowarp.I will probably share the link later.)
Star if you like,it wouldn't hurt!