js封装

方法一：

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);

　

方法二：jason

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>