Simple and tiny in-place Editor

in-place.js

(function (window) {
    'use strict';
    var document = window.document,
        console = window.console;

    document.addEventListener('keydown', function (event) {
        event = event || window.event;

        var target = event.target || event.srcElement,
            esc = (event.which === 27),
            enter = (event.which === 13);

        if (target.contentEditable === 'true') {

            if (esc) {
                document.execCommand('undo');
                target.blur();

            } else if (enter) {
                target.blur();

            } else {
                console.log('Editing!');
            }

        }
    });
}(this));