Textarea Height increase

How to incr开发者_JAVA百科ease the height of the text area as and when we type to a max of 50px from 18px. then if someone types more the scrollbar should take over. is this possible ?

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You can use either of these plugins:

• TextAreaExpander (Demo)
• autoResize Plugin

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That's JQuery Elastic. It might be your requirement. :)