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how to validate a telephone number in multiple format

rony Singh

rony Singh

Jan 6 2016 8:38 AM
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i have a telephone textbox. which has two format.
one is 1 800 ###-#### and 800 ###-####.i have made regular expressions for 1 800 ###-#### and it is working fine
but unable to validate both format.means telephone number can support both format .my regular expression for 1 800 ###-#### is 
 "^\1[\s](800)?[\s\-]?\d{3}\-?\d{4}$"  but unable to make both.please help me.what is the regular expressions for support two format
 

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