Function handleItemClick

component/Menu.js:53–60

(index, disabled)

    },

    handleItemClick(index, disabled){
        if (disabled) return;
        const {onChange} = this.props;
        if (onChange) onChange(index);
        this.setState({
            current: index, 
        }, () => this.closeSubMenu());
    },

    componentWillReceiveProps(nextProps) {
        if (nextProps.current !== this.props.current) {