这是本文档旧的修订版！

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饼图标签

        formatter: function(param){
            return param.name +String.fromCharCode("10")
                  + param.value +String.fromCharCode("10")
                  + param.percent;
        },

柱图轴标签

        formatter:function(param){
            function fixedLengthFormatString(str,num){
                if(str == null || str == undefined) return null;
                if(!(/^[0-9]*[1-9][0-9]*$/.test(num))) return null;
                var array = "";
                var len = str.length;
                for(var i=0;i<(len/num);i++){
                  if((i+1)*num > len){
                      array = array + str.substring(i*num,len) + String.fromCharCode("10");
                  }else{
                      array = array + str.substring(i*num,(i+1)*num);
                  }
                }
                return array;
            }
          return  fixedLengthFormatString(param, 5);//五个字符折行
        },