Validate Version using Javascript

validate.js

function validateVersion(version){
  var pat=/^[0-9]{1,3}.[0-9]{0,3}.[0-9]{0,3}$/;
  return pat.test(version)
}


Validate Version 

var version="10.2.5";
if(validateVersion(version)){
 alert("Valid Version");
}else{
 alert("Invalid Version");
}