jQuery 创建插件

效果图

QQ图片20160301105718.png

jQuery.mathutils.js

(function($){
    $.mathUtils = ({
        sum: function(array){
            var total  = 0;

            $.each(array,function(index,value){
                value  = $.trim(value);
                value  = parseFloat(value) || 0;

                total += value;
            });

            return total;
        },
        average:function(array){
            var total = $.mathUtils.sum(array);
            var average = total / array.length;
            average = average.toFixed(2);
            return average;
        }
    });

})(jQuery)

插件调用

    
    
    



    

        

            

                
Product
                
Quantity
                
Price
            
        

        

            

                
Spam
                
4
                
2.05
            

            

                
Egg
                
12
                
4.32
            

            

                
Gourmet Spam
                
14
                
7.89
            
        

        

            
Total