javascript cell number validation

Question

I want to validate cell number using JavaScript   Here is my code   if number value              window alert  Error  Cell number must not be null         number focus        return false     if number length    10        window alert  Phone number must be 10 digits         number focus        return false      Here is the issue  when I submit the form with out entering the phone number  it is showing the error cell number must not be null  it works fine    When I submit the form with cell number less than 10 digits  it is showing phone number must be 10 digits  It is also fine   The problem is when I submit the form with 10 digits  then also it is showing the error phone number must be 10 digits    Please help me  Thank You   And also need the validation code for only digits for cell number

User · Answer

Mobile number Validation using Java Script, This link will provide demo and more information.

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function isNumber(evt) {_x000D_
  evt = (evt) ? evt : window.event;_x000D_
  var charCode = (evt.which) ? evt.which : evt.keyCode;_x000D_
  if (charCode > 31 && (charCode < 48 || charCode > 57)) {_x000D_
    alert("Please enter only Numbers.");_x000D_
    return false;_x000D_
  }_x000D_
_x000D_
  return true;_x000D_
}_x000D_
_x000D_
function ValidateNo() {_x000D_
  var phoneNo = document.getElementById('txtPhoneNo');_x000D_
_x000D_
  if (phoneNo.value == "" || phoneNo.value == null) {_x000D_
    alert("Please enter your Mobile No.");_x000D_
    return false;_x000D_
  }_x000D_
  if (phoneNo.value.length < 10 || phoneNo.value.length > 10) {_x000D_
    alert("Mobile No. is not valid, Please Enter 10 Digit Mobile No.");_x000D_
    return false;_x000D_
  }_x000D_
_x000D_
  alert("Success ");_x000D_
  return true;_x000D_
}

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<input id="txtPhoneNo" type="text" onkeypress="return isNumber(event)" />_x000D_
<input type="button" value="Submit" onclick="ValidateNo();">

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User · Answer

If number is your form element  then its length will be undefined since elements don t have length  You want  if  number value length    10            An easier way to do all the validation at once  though  would be with a regex   var val   number value if     d 10    test val            value is ok  use it   else       alert  Invalid number  must be ten digits       number focus       return false      d means  digit   and  10  means  ten times   The   and   anchor it to the start and end  so something like asdf1234567890asdf does not match

User · Answer

lt script type  text javascript  gt      function MobileNoValidation                var phno    d 10           if textMobileNo value                       alert  Mobile No Should Not Be Empty                    else if  textMobileNo value match phno                    alert  Mobile no must be ten digit                    else                  alert  valid Mobile No                    lt  script gt

User · Answer

If you type   if   number value length   10            It will sure work because the value is the quantity which will be driven from the object

User · Answer

function IsMobileNumber txtMobId        var mob      1-9  1  0-9  9         var txtMobile   document getElementById txtMobId       if  mob test txtMobile value     false            alert  Please enter valid mobile number             txtMobile focus            return false            return true      Calling Validation Mobile Number Function HTML Code -

User · Answer

I used the follow code   var mobileNumber parseInt no    if  mobileNumber    mobileNumber toString   length  10     Alert  Please provide 10 Digit numeric value       If the mobile number is not a number  it will give NaN value

User · Answer

This function check the special chars on key press and eliminates the value if it is not a number  function mobilevalid id         var feild   document getElementById id        if  isNaN feild value     false            if  feild value length    1                if  feild value  lt  7                    feild value                               else if  feild value length  gt  10                feild value   feild value substr 0  feild value length - 1                     if  feild value charAt 0   lt  7                feild value                       else           feild value

User · Answer

Verify this code    It works on change of phone number field in ms crm 2016 form     function validatePhoneNumber          var mob   Xrm Page getAttribute  gen phone   getValue        var length   mob length      if  length  lt  10    length  gt  10            alert  Please Enter 10 Digit Number             Xrm Page getAttribute  gen phone   setValue null           return true            if  mob  gt  31  amp  amp   mob  lt  48    mob  gt  57      else           alert  Please Enter 10 Digit Number             Xrm Page getAttribute  gen phone   setValue null           return true

User · Answer

lt script gt      function validate             var phone document getElementById  phone   value          if isNaN phone                         alert  please enter digits only                       else if phone length  10                        alert  invalid mobile number                      else                       confirm  hello your mobile number is       phone              lt  script gt

[javascript] javascript cell number validation

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