validation - How can I get the HTML5 validity state of an input text box? -

how can retrieve html 5 'validity' status of text box?

for instance, have text input type="email". when user enters wrong value, text box shows red border (in firefox browser).

how can check 'validity-state' of input box?

you can use validity property:

var isvalid = document.getelementbyid('email').validity.valid;

or checkvalidity() method:

var isvalid = document.getelementbyid('email').checkvalidity();

Three