diff --git a/build/MDEditor.min.js b/build/MDEditor.min.js
index 859898b..cb7562d 100644
--- a/build/MDEditor.min.js
+++ b/build/MDEditor.min.js
@@ -927,7 +927,9 @@
             css(self.preview, {
                 height: self.textarea.offsetHeight + "px"
             });
+            self.callback(event, self.opts);
         });
+        return this;
     };
     MDEditor.prototype.getMD = function() {
         return this.textarea.value;
@@ -939,6 +941,10 @@
     MDEditor.prototype.getHTML = function() {
         if (marked) return marked(this.getMD()); else return this.preview.innerHTML;
     };
+    MDEditor.prototype.input = function(evn) {
+        this.callback = evn;
+        return this;
+    };
     MDEditor.prototype.setHTML = function(val) {
         if (marked) this.preview.innerHTML = marked(val ? val : this.opts.value);
         return this;
diff --git a/lib/MDEditor.js b/lib/MDEditor.js
index a2c1ecd..4777d1a 100644
--- a/lib/MDEditor.js
+++ b/lib/MDEditor.js
@@ -179,7 +179,9 @@
                 });
             }
             css(self.preview,{'height':self.textarea.offsetHeight  + "px"});
+            self.callback(event,self.opts)
         });
+        return this;
     }
     /**
      * [getMD 获取markdown的字符串]
@@ -206,6 +208,11 @@
         else return this.preview.innerHTML
     }
 
+    MDEditor.prototype.input = function(evn){
+        this.callback = evn
+        return this;
+    }
+
     /**
      * [setHTML 设置预览的HTML]
      */