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+### Modal/Dialog
+
+Renders a dialog component with modal.
+
+This is a simple React ModalDialog Component.It owns 4 props: `show`、`close`、`title` and `clickModal2Hide`.
+
+* `show` prop determines the initial state of the dialog(show/hide).It can influence the `display` css property of `modal` class div.E
+* `close` prop defines the method for closing the dialog.
+* `title` prop determines the title of the dialog.
+* `clickModal2Hide` prop determines whether we can close the dialog via clicking on modal.
+
+Create 3 methods and bind them to component:
+
+* `close` used to call the `close` prop to close the dialog.
+* `modalClick` used to define the click event handler of the modal.When `clickModal2Hide` prop passed as `true`,the `modalClick` will close the dialog when modal clicked.
+* `dialogClick` used to stop propagation of the modal click event.You can define more logics in this method.
+
+Use `children` prop to get the content of the dialog passed by Component User.Render the content in `dialog-content` class div.
+
+```css
+  .modal {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0, 0, 0, 0.6);
+    z-index: 9998;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+  }
+  .dialog {
+    background-color: white;
+    border-radius: 5px;
+    overflow: hidden;
+  }
+  .dialog-title {
+    box-sizing: border-box;
+    width: 100%;
+    height: 48px;
+    padding: 0 16px;
+    border-bottom: 0.5px solid #c3c3c3;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+  }
+  .dialog-close {
+    font-size: 32px;
+    color: #c3c3c3;
+    cursor: pointer;
+    transform: rotate(45deg);
+    user-select: none;
+  }
+  .dialog-close:hover {
+    color: red;
+  }
+  .dialog-content {
+    min-width: 300px;
+  }
+```
+
+```jsx
+  class Dialog extends React.Component {
+    constructor() {
+      super();
+      this.close = this.close.bind(this);
+      this.modalClick = this.modalClick.bind(this);
+      this.dialogClick = this.dialogClick.bind(this);
+    }
+    render() {
+      return <div className="modal" onClick={this.modalClick} style={{ display: this.props.show ? '' : 'none'}}>
+        <div className="dialog" onClick={this.dialogClick}>
+          <div className="dialog-title">{ this.props.title }<span className="dialog-close" onClick={this.close}>+</span></div>
+          <div className="dialog-content">
+            {
+              this.props.children
+            }
+          </div>
+        </div>
+      </div>
+    }
+    close() {
+      this.props.close();
+    }
+    modalClick() {
+      if (this.props.clickModal2Hide) {
+        this.close();
+      }
+    }
+    dialogClick(e) {
+      e.stopPropagation();
+    }
+  }
+```
+
+```jsx
+  let ModalDialog = <Dialog show={this.state.visible} title="Test" clickModal2Hide={true} close={()=>{this.setState({visible: false})}}>
+                      <img src="https://github.com/30-seconds/30-seconds-of-react/blob/master/logo.png?raw=true"></img>
+                    </Dialog>;
+  ReactDOM.render(<ModalDialog />, Node);
+```
+
+<!-- tags: props,children,class -->
+
+<!-- expertise: 1 -->