diff --git a/.gitignore b/.gitignore
index d01b4b4..482a31f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+.idea/
+
 # Logs
 logs
 *.log
diff --git a/README.md b/README.md
index 41a9aba..1bd9ca1 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,12 @@ $('#ca').calendar({
     // Fixed date range: [new Date(2016, 0, 1), new Date(2016, 11, 31)] or ['2016/1/1', '2016/12/1']
     // Starting today: [new Date(), null] or [new Date()]
     selectedRang: null,
-
+    
+    // 휴일 관리 Array 
+    // value : [ days ....]
+    // 예시 ['2017/02/17','2017/02/18']
+    holidays: null,
+        
     // display data when mouse enter 
     // value: `[{ date: String || Date, value: object }, ... ]`
     // example: [ { date: '2016/1/1', value: 'A new Year'} ] or [ { date: new Date(), value: 'What to do'} ]
diff --git a/index.html b/index.html
index fef8ad5..a93d17a 100644
--- a/index.html
+++ b/index.html
@@ -91,8 +91,9 @@ <h2>Trigger calendar</h2>
             // startWeek: 0,
             // selectedRang: [new Date(), null],
             data: data,
+            holidays : ['2017/02/18','2017/02/19'],
             monthArray: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
-            date: new Date(2016, 9, 31),
+            //date: new Date(2016, 9, 31),
             onSelected: function (view, date, data) {
                 console.log('view:' + view)
                 console.log('date:' + date)
@@ -100,7 +101,6 @@ <h2>Trigger calendar</h2>
             },
             viewChange: function (view, y, m) {
                 console.log(view, y, m)
-
             }
         });
 
diff --git a/src/calendar.js b/src/calendar.js
index d02046b..92ce285 100644
--- a/src/calendar.js
+++ b/src/calendar.js
@@ -59,6 +59,8 @@
         // 如设置2015年11月23日以前不可选：[new Date(), null] or ['2015/11/23']
         selectedRang: null,
 
+        holidays:null,
+
         // 日期关联数据 [{ date: string, value: object }, ... ]
         // 日期格式与 format 一致
         // 如 [ {date: '2015/11/23', value: '面试'} ]
@@ -173,13 +175,20 @@
     }
 
     // extension methods
-
     String.prototype.repeat = function (data) {
         return this.replace(/\{\w+\}/g, function (str) {
             var prop = str.replace(/\{|\}/g, '');
             return data[prop] || '';
         });
     }
+    
+    String.prototype.lpad = function (padLength, padString) {
+        var str =  this;
+        while(str.length < padLength) {
+            str = padString + str;
+        }
+        return str; 
+    }
 
     String.prototype.toDate = function () {
         var dt = new Date(),
@@ -191,10 +200,12 @@
 
     Date.prototype.format = function (exp) {
         var y = this.getFullYear(),
-            m = this.getMonth() + 1,
+            m = ''+(this.getMonth() + 1),
             d = this.getDate();
-
-        return exp.replace('yyyy', y).replace('mm', m).replace('dd', d);
+        
+        m= m.lpad(2,0);
+        
+        return exp.replace('yyyy', y).replace('MM', m).replace('dd', d);
     }
 
     Date.prototype.isSame = function (y, m, d) {
@@ -279,6 +290,7 @@
         this.height = this.options.height;
         this.date = this.options.date;
         this.selectedRang = this.options.selectedRang;
+        this.holidays =  this.options.holidays;
         this.data = this.options.data;
         this.init();
     }
@@ -296,6 +308,16 @@
                 }
             }
 
+            if(this.holidays) {
+
+                this.holidays.forEach(function (v,i) {
+                    if(day.getTime() == Date.tryParse(v).getTime()) {
+                        console.log(v);
+                        action = DISABLED;
+                    }
+                });
+            }
+
             return action;
         },
         getDayData: function (day) {
@@ -635,7 +657,7 @@
                 toggleClass.call(this);
             }
 
-            return new Date(y, m - 1, d);
+            return new Date(y, m - 1, d).format(this.options.format);
         },
         showLabel: function (event, view, date, data) {
             var $lbl = this.$label;
@@ -710,6 +732,7 @@
                 var day = _this.selectedDay(d, type);
 
                 _this.options.onSelected.call(this, 'date', day, $(this).data(MARK_DATA));
+                console.log('selected1');
 
                 _this.$trigger && _this.hide('date', day, $(this).data(MARK_DATA));
 
@@ -720,6 +743,7 @@
                 _this.updateDateView(y, m);
                 vc('date', y, m);
                 _this.options.onSelected.call(this, 'month', new Date(y, m - 1));
+                console.log('selected2');
             });
 
             // hover
@@ -795,4 +819,4 @@
 
     $.fn.calendar.defaults = defaults;
 
-}));
+}));
\ No newline at end of file