numeric « regex « jQuery Q&A

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jQuery Q&A » regex » numeric 

1. javascript/jquery: quick way to retrieve numeric from length attributes    stackoverflow.com

I have attributes which denotes "5 px", "8px" "6em" and possible some others which I currently cannot think of right now. I'm interested in only the numeric value (ie 5, 8 or ...

2. Determine if a string of characters is 9 characters long and all numeric    stackoverflow.com

My regex skills are a bit rusty. Can someone provide a expression that I can use in javascript to match on a 9 digit string with all numberic values? Thanks!

3. Thousand separator in numeric input with jQuery and regularexpressions    stackoverflow.com

I need to make my numeric input in such mode: {1-3 numbers} {white-space} {3 numbers} {white-space} {3 numbers} {white-space} .. and so on.. for example, when user enters 1000 it should be ...

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