Flex TextInput restrict: Restrict punctuation

I have need to restrict user input. TextInput should 开发者_高级运维restrict all special characters and punctuation. Any other characters are allowed. In java there is a regex patter:

replaceAll("\\p{Punct}", "_")

Is there something similar in actionscript?

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Use the restrict property:

<s:TextInput restrict="a-z0-9" />

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This should be the equivalent of {Punct}

string = string.replace(/[!"#$%&'()*+,-.\/:;<=>?@[\]^_`{|}~]/ig, "_");