Travis build: 73

README.md

@@ -89,6 +89,7 @@ import ReactDOM from 'react-dom';
 <summary>View contents</summary>
 
 * [`Accordion`](#accordion-)
+* [`Alert`](#alert)
 * [`AutoLink`](#autolink-)
 * [`Carousel`](#carousel)
 * [`Collapse`](#collapse)
@@ -1143,6 +1144,109 @@ ReactDOM.render(
 
 <br>[⬆ Back to top](#contents)
 
+### Alert
+
+Creates an alert component with `type` prop.
+
+- Define appropriate CSS styles and animations for the component's elements.
+- Use the `React.setState()` hook to create the `isShown` and `isLeaving` state variables and set their values to `false`.
+- Define `timeoutId` to keep the timer instance for clearing on component unmount.
+- Use the `React.setEffect()` hook to update the value of `isShown` to `true` and clear interval by using `timeoutId` when component is unmounted.
+- Define `closeNotification` function to set the component is removed from DOM by displaying fading out animation and set `isShown` to `false` via `setTimeout()`. 
+- Define the component, which renders the alert component with user defined `message` and a close button to remove the component from DOM.
+
+```css
+@keyframes leave {
+  0% { opacity: 1 }
+  100% { opacity: 0 }
+}
+
+.alert {
+  padding: 0.75rem 0.5rem;
+  margin-bottom: 0.5rem;
+  text-align: left;
+  padding-right: 40px;
+  border-radius: 4px;
+  font-size: 16px;
+  position: relative;
+}
+
+.alert.warning{
+  color: #856404;
+  background-color: #fff3cd;
+  border-color: #ffeeba;
+}
+
+.alert.error{
+  color: #721c24;
+  background-color: #f8d7da;
+  border-color: #f5c6cb;
+}
+
+.alert.leaving{
+  animation: leave 0.5s forwards;
+}
+
+.alert .close {
+  position: absolute;
+  top: 0;
+  right: 0;
+  padding: 0 0.75rem;
+  color: #333;
+  border: 0;
+  height: 100%;
+  cursor: pointer;
+  background: none;
+  font-weight: 600;
+  font-size: 16px;
+}
+
+.alert .close:after{
+  content: 'x';
+}
+```
+
+```jsx
+function Notification(props) {
+    const [isShown, setIsShown] = React.useState(false);
+    const [isLeaving, setIsLeaving] = React.useState(false);
+
+    let timeoutId = null;
+
+    React.useEffect(() => {
+      setIsShown(true);
+      return () => {
+        clearTimeout(timeoutId);
+      }
+    }, [props.isShown, props.timeout, timeoutId]);
+
+    const closeNotification = () => {
+      setIsLeaving(true);
+      timeoutId = setTimeout(() => {
+        setIsLeaving(false);
+        setIsShown(false);
+      }, 250)
+    }
+
+    return isShown && (
+      <div className={`alert ${props.type}${isLeaving ? ' leaving' : ''}`} role="alert">
+        <button className="close" onClick={closeNotification} />
+        {props.message}
+      </div>
+    )
+}
+```
+
+<details>
+<summary>Examples</summary>
+
+```jsx
+ReactDOM.render(<Notification type="info" message="This is info" />, document.getElementById('root'));
+```
+</details>
+
+<br>[⬆ Back to top](#contents)
+
 ### AutoLink ![advanced](/advanced.svg)
 
 Renders a string as plaintext, with URLs converted to appropriate `<a>` elements.

snippet_data/snippetList.json

@@ -17,6 +17,23 @@
         "hash": "b83c2546a50390dcda27afa3bd654fc6b70474e624cdd80ef6862f7d14c2c7c6"
       }
     },
+    {
+      "id": "Alert",
+      "type": "snippetListing",
+      "title": "Alert",
+      "attributes": {
+        "text": "Creates an alert component with `type` prop.\n\n- Define appropriate CSS styles and animations for the component's elements.\n- Use the `React.setState()` hook to create the `isShown` and `isLeaving` state variables and set their values to `false`.\n- Define `timeoutId` to keep the timer instance for clearing on component unmount.\n- Use the `React.setEffect()` hook to update the value of `isShown` to `true` and clear interval by using `timeoutId` when component is unmounted.\n- Define `closeNotification` function to set the component is removed from DOM by displaying fading out animation and set `isShown` to `false` via `setTimeout()`. \n- Define the component, which renders the alert component with user defined `message` and a close button to remove the component from DOM.\n\n",
+        "tags": [
+          "visual",
+          "beginner",
+          "state",
+          "effect"
+        ]
+      },
+      "meta": {
+        "hash": "6a9a1148d22c55f24865ce2672a84222409769910a5e472ab80e353c61914ab8"
+      }
+    },
     {
       "id": "AutoLink",
       "type": "snippetListing",

snippet_data/snippets.json

@@ -23,6 +23,29 @@
         "hash": "b83c2546a50390dcda27afa3bd654fc6b70474e624cdd80ef6862f7d14c2c7c6"
       }
     },
+    {
+      "id": "Alert",
+      "title": "Alert",
+      "type": "snippet",
+      "attributes": {
+        "fileName": "Alert.md",
+        "text": "Creates an alert component with `type` prop.\n\n- Define appropriate CSS styles and animations for the component's elements.\n- Use the `React.setState()` hook to create the `isShown` and `isLeaving` state variables and set their values to `false`.\n- Define `timeoutId` to keep the timer instance for clearing on component unmount.\n- Use the `React.setEffect()` hook to update the value of `isShown` to `true` and clear interval by using `timeoutId` when component is unmounted.\n- Define `closeNotification` function to set the component is removed from DOM by displaying fading out animation and set `isShown` to `false` via `setTimeout()`. \n- Define the component, which renders the alert component with user defined `message` and a close button to remove the component from DOM.\n\n",
+        "codeBlocks": {
+          "style": "@keyframes leave {\n  0% { opacity: 1 }\n  100% { opacity: 0 }\n}\n\n.alert {\n  padding: 0.75rem 0.5rem;\n  margin-bottom: 0.5rem;\n  text-align: left;\n  padding-right: 40px;\n  border-radius: 4px;\n  font-size: 16px;\n  position: relative;\n}\n\n.alert.warning{\n  color: #856404;\n  background-color: #fff3cd;\n  border-color: #ffeeba;\n}\n\n.alert.error{\n  color: #721c24;\n  background-color: #f8d7da;\n  border-color: #f5c6cb;\n}\n\n.alert.leaving{\n  animation: leave 0.5s forwards;\n}\n\n.alert .close {\n  position: absolute;\n  top: 0;\n  right: 0;\n  padding: 0 0.75rem;\n  color: #333;\n  border: 0;\n  height: 100%;\n  cursor: pointer;\n  background: none;\n  font-weight: 600;\n  font-size: 16px;\n}\n\n.alert .close:after{\n  content: 'x';\n}",
+          "code": "function Notification(props) {\n    const [isShown, setIsShown] = React.useState(false);\n    const [isLeaving, setIsLeaving] = React.useState(false);\n\n    let timeoutId = null;\n\n    React.useEffect(() => {\n      setIsShown(true);\n      return () => {\n        clearTimeout(timeoutId);\n      }\n    }, [props.isShown, props.timeout, timeoutId]);\n\n    const closeNotification = () => {\n      setIsLeaving(true);\n      timeoutId = setTimeout(() => {\n        setIsLeaving(false);\n        setIsShown(false);\n      }, 250)\n    }\n\n    return isShown && (\n      <div className={`alert ${props.type}${isLeaving ? ' leaving' : ''}`} role=\"alert\">\n        <button className=\"close\" onClick={closeNotification} />\n        {props.message}\n      </div>\n    )\n}",
+          "example": "ReactDOM.render(<Notification type=\"info\" message=\"This is info\" />, document.getElementById('root'));"
+        },
+        "tags": [
+          "visual",
+          "beginner",
+          "state",
+          "effect"
+        ]
+      },
+      "meta": {
+        "hash": "6a9a1148d22c55f24865ce2672a84222409769910a5e472ab80e353c61914ab8"
+      }
+    },
     {
       "id": "AutoLink",
       "title": "AutoLink",