Changing and reverting

Now we can style our edit form. Let's replace the modification indicator (asterisk) with a button that will simulate the save action:

constructor(props) {
    super(props);

    this.state = {
        "changed": false
    };

    this.bind(
        "onCancel",
        "onSave",
        "onUpdate",
    );
}

render() {
    var cancelButtonStyle = null;
    var saveButton = null;

    if (this.state.changed) {
        cancelButtonStyle = this.props.cancelButtonStyle || {
           "margin": "0 0 0 10px"
        };

        saveButton = <button
            onClick={this.onCancel}>
            save
        </button>
    }

    return <form>
        <div>
            <input
                type="text"
                onChange={this.onUpdate}
                name="title"
                value={this.props.title}
                />
        </div>
        <div>
            <input
                type="text"
                onChange...