button可以實現禁止點擊，但是img如何實現禁止點擊事件<figure  className={imgFigureClassName}   disabled={!this.props.isClickable} onClick={this.handleClick}>                 <img disabled={!this.props.isClickable} onClick={this.handleClick} src={imgData.imageURL} alt={imgData.title}/>                 <figcaption>                     <div className="img-back"  disabled={!this.props.isClickable} onClick={this.handleClick}>                         <img src={back} alt="背面圖片"/>                     </div>                 </figcaption>                 <button disabled={!this.props.isClickable} onClick={this.handleClick}>點擊</button>             </figure>