diff --git a/README-zh.md b/README-zh.md
index 7eea62c..8a59010 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -28,6 +28,32 @@ $ npm run build # 编译
 $ npm run watch # 开发模式
 ```
 
+```js
+import hotkeys from 'hotkeys-js';
+
+hotkeys('f5', function(event, handler){
+  // Prevent the default refresh event under WIDNOWS system
+  event.preventDefault() 
+  alert('you pressed F5!') 
+});
+```
+
+或者在您的HTML中手动下载并引入** hotkeys.js **：
+
+```html
+<script type="text/javascript" src="hotkeys.js"></script>
+<script type="text/javascript">
+hotkeys('ctrl+a,ctrl+b,r,f', function(event,handler) {
+  switch(handler.key){
+    case "ctrl+a":alert('you pressed ctrl+a!');break;
+    case "ctrl+b":alert('you pressed ctrl+b!');break;
+    case "r":alert('you pressed r!');break;
+    case "f":alert('you pressed f!');break;
+  }
+});
+<script>
+```
+
 ## React中使用
 
 [react-hotkeys](https://github.com/jaywcjlove/react-hotkeys)，安装如下：
@@ -92,9 +118,35 @@ hotkeys('shift+a,alt+d, w', function(e){
 });
 ```
 
+## 支持的键
+
+`⇧`, `shift`, `option`, `⌥`, `alt`, `ctrl`, `control`, `command`, `⌘`
+
+`⌘` Command()  
+`⌃` Control  
+`⌥` Option(alt)  
+`⇧` Shift  
+`⇪` Caps Lock(大写)  
+~~`fn` 功能键就是fn(不支持)~~  
+`↩︎` return/enter  
+`space` 空格键  
+
+## 修饰键判断
+可以对下面的修饰键判断 `shift` `alt` `option` `ctrl` `control` `command`，特别注意`+`和`=`键值相同，组合键设置`⌘+=`
+
+```js
+hotkeys('shift+a,alt+d, w', function(e){
+  console.log('干点活儿',e);
+  if(hotkeys.shift) console.log('大哥你摁下了 shift 键！');
+  if(hotkeys.ctrl) console.log('大哥你摁下了 ctrl 键！');
+  if(hotkeys.alt) console.log('大哥你摁下了 alt 键！');
+});
+```
 
 ## 定义快捷键
 
+> `hotkeys([keys:<String>], [option:[string|object|function]], [callback:<function>])`
+
 ```js
 // 定义 F5 快捷键
 hotkeys('f5', function(event,handler){
@@ -141,28 +193,17 @@ hotkeys('*','wcj', function(e){
 });
 ```
 
-## 支持的键
+#### option 
 
-`⇧`, `shift`, `option`, `⌥`, `alt`, `ctrl`, `control`, `command`, `⌘`
-
-`⌘` Command()  
-`⌃` Control  
-`⌥` Option(alt)  
-`⇧` Shift  
-`⇪` Caps Lock(大写)  
-~~`fn` 功能键就是fn(不支持)~~  
-`↩︎` return/enter  
-`space` 空格键  
-
-## 修饰键判断
-可以对下面的修饰键判断 `shift` `alt` `option` `ctrl` `control` `command`，特别注意`+`和`=`键值相同，组合键设置`⌘+=`
+- scope<String>  
+- element<HTMLElement>  
 
 ```js
-hotkeys('shift+a,alt+d, w', function(e){
-  console.log('干点活儿',e);
-  if(hotkeys.shift) console.log('大哥你摁下了 shift 键！');
-  if(hotkeys.ctrl) console.log('大哥你摁下了 ctrl 键！');
-  if(hotkeys.alt) console.log('大哥你摁下了 alt 键！');
+hotkeys('o, enter', {
+  scope: 'wcj',
+  element: document.getElementById('warpper'),
+}, function(){ 
+  console.log('do something else');
 });
 ```
 
diff --git a/README.md b/README.md
index c252509..345b718 100644
--- a/README.md
+++ b/README.md
@@ -22,12 +22,28 @@ $ npm install hotkeys-js --save
 
 ```js
 import hotkeys from 'hotkeys-js';
+
+hotkeys('f5', function(event, handler){
+  // Prevent the default refresh event under WIDNOWS system
+  event.preventDefault() 
+  alert('you pressed F5!') 
+});
 ```
 
 Or manually download and link **hotkeys.js** in your HTML:
 
 ```html
 <script type="text/javascript" src="hotkeys.js"></script>
+<script type="text/javascript">
+hotkeys('ctrl+a,ctrl+b,r,f', function(event,handler) {
+  switch(handler.key){
+    case "ctrl+a":alert('you pressed ctrl+a!');break;
+    case "ctrl+b":alert('you pressed ctrl+b!');break;
+    case "r":alert('you pressed r!');break;
+    case "f":alert('you pressed f!');break;
+  }
+});
+<script>
 ```
 
 ### Used in React
@@ -82,10 +98,29 @@ Firefox
 Chrome
 ```
 
+## Supported Keys
+
+HotKeys understands the following modifiers: `⇧`, `shift`, `option`, `⌥`, `alt`, `ctrl`, `control`, `command`, and `⌘`.
+
+The following special keys can be used for shortcuts: backspace, tab, clear, enter, return, esc, escape, space, up, down, left, right, home, end, pageup, pagedown, del, delete and f1 through f19.
+
+`⌘` Command()  
+`⌃` Control  
+`⌥` Option(alt)  
+`⇧` Shift  
+`⇪` Caps Lock(Capital)  
+~~`fn` Does not support fn~~  
+`↩︎` return/Enter space  
+
 ## Defining Shortcuts
 
 One global method is exposed, key which defines shortcuts when called directly.
 
+```
+hotkeys([keys:<String>], [option:[string|object|function]], [callback:<function>])
+```
+
+
 ```js
 hotkeys('f5', function(event, handler){
   // Prevent the default refresh event under WIDNOWS system
@@ -102,7 +137,7 @@ hotkeys('a', function(event,handler){
   alert('you pressed a!') 
 });
 
-hotkeys('ctrl+a,ctrl+b,r,f', function(event,handler){
+hotkeys('ctrl+a,ctrl+b,r,f', function(event,handler) {
   switch(handler.key){
     case "ctrl+a":alert('you pressed ctrl+a!');break;
     case "ctrl+b":alert('you pressed ctrl+b!');break;
@@ -116,6 +151,20 @@ hotkeys('*','wcj', function(e){
 });
 ```
 
+#### option 
+
+- scope<String>  
+- element<HTMLElement>  
+
+```js
+hotkeys('o, enter', {
+  scope: 'wcj',
+  element: document.getElementById('warpper'),
+}, function(){ 
+  console.log('do something else');
+});
+```
+
 ## API REFERENCE
 
 Asterisk "*"
@@ -238,20 +287,6 @@ hotkeys()
 // @ VM2165:883InjectedScript._evaluateAndWrap 
 // @ VM2165:816InjectedScript.evaluate @ VM2165:682
 ```
-
-## Supported Keys
-
-HotKeys understands the following modifiers: `⇧`, `shift`, `option`, `⌥`, `alt`, `ctrl`, `control`, `command`, and `⌘`.
-
-The following special keys can be used for shortcuts: backspace, tab, clear, enter, return, esc, escape, space, up, down, left, right, home, end, pageup, pagedown, del, delete and f1 through f19.
-
-`⌘` Command()  
-`⌃` Control  
-`⌥` Option(alt)  
-`⇧` Shift  
-`⇪` Caps Lock(Capital)  
-~~`fn` Does not support fn~~  
-`↩︎` return/Enter space  
  
 ## Development
 
diff --git a/website/doc.md b/website/doc.md
index 5bbc296..8c97077 100644
--- a/website/doc.md
+++ b/website/doc.md
@@ -21,12 +21,28 @@ $ npm install hotkeys-js --save
 
 ```js
 import hotkeys from 'hotkeys-js';
+
+hotkeys('f5', function(event, handler){
+  // Prevent the default refresh event under WIDNOWS system
+  event.preventDefault() 
+  alert('you pressed F5!') 
+});
 ```
 
 Or manually download and link **hotkeys.js** in your HTML:
 
 ```html
 <script type="text/javascript" src="hotkeys.js"></script>
+<script type="text/javascript">
+hotkeys('ctrl+a,ctrl+b,r,f', function(event,handler) {
+  switch(handler.key){
+    case "ctrl+a":alert('you pressed ctrl+a!');break;
+    case "ctrl+b":alert('you pressed ctrl+b!');break;
+    case "r":alert('you pressed r!');break;
+    case "f":alert('you pressed f!');break;
+  }
+});
+<script>
 ```
 
 ### Used in React
@@ -77,6 +93,20 @@ Firefox
 Chrome
 ```
 
+## Supported Keys
+
+HotKeys understands the following modifiers: `⇧`, `shift`, `option`, `⌥`, `alt`, `ctrl`, `control`, `command`, and `⌘`.
+
+The following special keys can be used for shortcuts: backspace, tab, clear, enter, return, esc, escape, space, up, down, left, right, home, end, pageup, pagedown, del, delete and f1 through f19.
+
+`⌘` Command()  
+`⌃` Control  
+`⌥` Option(alt)  
+`⇧` Shift  
+`⇪` Caps Lock(Capital)  
+~~`fn` Does not support fn~~  
+`↩︎` return/Enter space  
+
 ## Defining Shortcuts
 
 One global method is exposed, key which defines shortcuts when called directly.
@@ -111,6 +141,20 @@ hotkeys('*','wcj', function(e){
 });
 ```
 
+#### option 
+
+- scope<String>  
+- element<HTMLElement>  
+
+```js
+hotkeys('o, enter', {
+  scope: 'wcj',
+  element: document.getElementById('warpper'),
+}, function(){ 
+  console.log('do something else');
+});
+```
+
 ## API REFERENCE
 
 Asterisk "*"
@@ -233,20 +277,6 @@ hotkeys()
 // @ VM2165:883InjectedScript._evaluateAndWrap 
 // @ VM2165:816InjectedScript.evaluate @ VM2165:682
 ```
-
-## Supported Keys
-
-HotKeys understands the following modifiers: `⇧`, `shift`, `option`, `⌥`, `alt`, `ctrl`, `control`, `command`, and `⌘`.
-
-The following special keys can be used for shortcuts: backspace, tab, clear, enter, return, esc, escape, space, up, down, left, right, home, end, pageup, pagedown, del, delete and f1 through f19.
-
-`⌘` Command()  
-`⌃` Control  
-`⌥` Option(alt)  
-`⇧` Shift  
-`⇪` Caps Lock(Capital)  
-~~`fn` Does not support fn~~  
-`↩︎` return/Enter space  
  
 ## Development