Toggle element edit

toggleContentEditable.js

var el = document.querySelector('.el'),
    btn = document.querySelector('.btn-edit');

el.addEventListener('input', function (e) {
    console.log(e.currentTarget.textContent);
});

btn.addEventListener('click', function () {
    var isEditing = el.getAttribute('contenteditable');
    
    if (isEditing) {
        el.removeAttribute('contenteditable');
    } else {
        el.setAttribute('contenteditable', true);
    }
});