For mobile number validation you can use regular expression which give you best output . This is javascript code which check mobile number valid or not.
<html> <head> <title>Mobile number validation using regex</title> <script type="text/javascript"> function validate() { var mobile = document.getElementById("mobile").value; var pattern = /^[\s()+-]*([0-9][\s()+-]*){6,20}$/; if (pattern.test(mobile)) { alert("Your mobile number : "+mobile); return true; } alert("It is not valid mobile number"); return false; } </script> </head> <body> Enter Mobile No. : <input type="text" name="mobile" id="mobile" /> <input type="submit" value="Check" onclick="validate();" /> </body> </html>
and you can also jQuery for mobile number validation , this is simple code
<html> <head> <script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.2.1.min.js"></script> <title>Mobile number validation using regex</title> <script type="text/javascript"> function validate() { var mobile = $("#mobile").val(); var pattern = /^[\s()+-]*([0-9][\s()+-]*){6,20}$/; if (pattern.test(mobile)) { alert("Your mobile number : " + mobile); return true; } alert("It is not valid mobile number"); return false; } </script> </head> <body> Enter Mobile No. : <input type="text" name="mobile" id="mobile"/> <input type="submit" value="Check" onclick="validate();"/> </body> </html>
If you face any problem then please inform me.