thanks, understand.
another question raise ,
lets said a coin market price now is $10 and going up,   i put a stop-limit order at $8 to sell at $7.9 price is still good and going up, but some one accidentally or purposely  make a very small amount of selling at $8. will that trigger my stop-limit order to sell all my coin off at $7.9??

what happen if i miss type a very low price to sell or a very high price to buy when trading? will i simply buy or sell  in the market price at the current time? for example. if a coin is trading at $10 per coin at market price, and i place a order to buy at 1 coin $100? will i just get one coin and $100 is all gone?