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Validate phone number JS

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Posted on by Community Member

Hello expert ,

I need to validate a phone number that contain up to 10 digits without spaces & should not start with 04 or 05.

this is my function:

function ValidatePhoneNumber() {
debugger;
var mobilenumber = Xrm.Page.getAttribute("telephone1").getValue();
if (mobilenumber != null && mobilenumber != undefined) {
var pattern = /^[0-9]\d{2,4}\d{6,8}$/;
if (mobilenumber.match(pattern)) {
return true;
}
else {

alert("Please Enter Valid Mobile NUmber");
Xrm.Page.getAttribute("telephone1").setValue(null);
}

}

}

Thank you in advance

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Hi David Thorn,

I am guessing that your question is that it is not working. The problem seems to be because of the regular expression.

Can you please try this pattern?

^(?!(04|05))(?=\d{10}$)\d+/

This is the pattern for checking if the first two digits are not 04 or 05, not containing any spaces and is exactly 10 digits long. You can easily verify the regex by running it in Chrome Developer Tools. A demo is available at https://regex101.com/r/E9NFF2/1/.

- Sara

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Hello Sara ,

Thank you for your answer.

But i got an error when i sue this pattern , my function is not defined at eval time ,when i get back to my script its wworking fine but the validation not.

Thank you

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I just find why ,a bracket is missing /^(?!(04|05))(?=\d{10}$)\d+/

Thank you so much for your help & for the link!

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and if i want a validation of a number that starts with : 04 or 05

i tried /^(?:04|05)(?=\d{10}$)\d+/ but its not working

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I just find It!thanks

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