how the set the text area always scroll down

how the set the text area always scroll down . its default the scroll bar is up .

I am trying to ever 2 min i am reloading开发者_如何学运维 the text area evert 2 mins .

the scroll bar is not showing in down .

I want to show scroll bar in down ?

How to achieve in simple way , rather using some other horrible technique ?

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Try:

myArea.scrollTop = myArea.scrollHeight;