function Tetrio(singleW){

if(singleW == undefined){ singleW = 18; }

　　this.x = 0;
　　this.y = 0;
}

Tetrio.prototype.draw = function(context){
　　
}

调用：
var tetri = new Tetrio();
    tetri.draw(context);

var AlertBox = {

    htmlTemplate:'<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">\

  <div class="modal-dialog">\

    <div class="modal-content">\

      <div class="modal-header">\

        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>\

        <h4 class="modal-title" id="exampleModalLabel">$title$</h4>\

      </div>\

      <div class="modal-body">\

          <div class="form-group">\

            $content$\

          </div>\

      </div>\

      <div class="modal-footer">\

        <button type="button" class="btn btn-default" onclick="AlertBox.Close();">Close</button>\

        <button type="button" class="btn btn-primary">Submit note</button>\

      </div>\

    </div>\

  </div>\

</div>',

    Show: function (title, content) {

        var ht = this.htmlTemplate.replace('$title$', title);

        ht = ht.replace('$content$', content);

        $('body').append(ht);

        $('#myModal').modal('show');

    },

    Close: function () {

        $('.modal-backdrop').remove();

        $('#myModal').remove();

    }

};

调用:
<a href="#" onclick="AlertBox.Show('Note','aaa');" ><i class="fa fa-comment"></i></a>