Is there a javascript library can help me to operate textarea? [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

how can i get cursor position in a textarea?

I want some basic but common operations on textarea with javascript, such as

• get the cursor position
• set the cursor position
• insert some tex开发者_StackOverflow中文版t to the cursor position
• select all text in textarea
• select a range of text
• insert some text to the cursor position, and select it immediately.

I hope it working cross-browers.

Is there such javascript library?

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There's a jQuery plug-in I've written that does all of this. There's a standalone version too but it needs a little bit of tidying. If you'd prefer no jQuery then it would give me a reason to sort it out and release it.