blur/hide Android keyboard and focus input type

Question

Currently trying to focus on an input type when the AJAX method went successful. It works, but on Android it opens the virtual keyboard. As we are working on a PDA with a keyboard, I would like to hide that virtual keyboard.

On success

var inp = "$('artikeltje')"
hideKeyboard(inp);
document.getElementById("artikeltje").focus();

the function hideKeyBoard

function hideKeyboard(element) {
    element.attr('readonly', 'readonly'); // Force keyboard to hide on input field.
    element.attr('disabled', 'true'); // Force keyboard to hide on textarea field.
    setTimeout(function () {
        element.blur();  //actually close the keyboard
        // Remove readonly attribute after keyboard is hidden.
        element.removeAttr('readonly');
        element.removeAttr('disabled');
    }, 100);
}

Which was taken from this question: https://stackoverflow.com/a/11160055/7639883

Also: I have tried to set the focus first and then apply the hideKeyboard() without luck!