<form id="myform"> <input name="username" required /> <br /> <input type="email" name="userEmail" required /> <br /> <button>Validate</button> </form> <script> $("#myform").kendoValidator({ messages: { required: "This field is mandatory", email: "Please enter a valid email address" } }); </script>

<form id="myform"> <input name="username" required /> <br /> <input type="email" name="userEmail" required data-message="My custom email message" /> <br /> <button>Validate</button> </form> <script> $("#myform").kendoValidator({ messages: { // defines a message for the 'custom' validation rule custom: "Please enter valid value for my custom rule", // overrides the built-in message for the required rule required: "My custom required message", // overrides the built-in message for the email rule // with a custom function that returns the actual message email: function(input) { return getMessage(input); } }, rules: { custom: function(input) { if (input.is("[name=username]")) { return input.val() === "Tom"; } return true; } } }); function getMessage(input) { return input.data("message"); } </script>