Modernizr.changeinputtype test

changeinputtype.js

/**
 * Use Modernizr to test if changing input.type is allowed in x browser.
 * Based on supportsChangingTypeAttribute from http://lea.verou.me/2009/06/on-password-masking-and-usability/
 */
Modernizr.addTest('changeinputtype', function () {
    var input = document.createElement('input');
    try {
        input.type = 'password';
        input.type = 'text';
    } catch (e) {
        return false;
    }
    return input.type == 'text';
});