Reactjs: page refreshing upon `onClick`

The full solution for the issue of the page reloading will be:


    private renderButtons() {
        return <div className="buttonDiv">
            <button type="button" className="btn btn-default" onClick={this.dataRefrech}>Refresh</button>
            <button type="button" className="btn btn-default btn-right" onClick={this.handleClick}>Remove From Queue</button>
        </div>;
    }
    
    dataRefrech(e:any) {
        e.preventDefault();
        var startDateIndex = new Date().getUTCMilliseconds();
        this.props.requestQueItems(startDateIndex);
        this.updateDimensions();
    }