Merge pull request #77 from prvnbist/master

Add TagInput

snippets/TagInput.md

@@ -0,0 +1,108 @@
+---
+title: TagInput
+tags: input,visual,state,intermediate
+---
+
+Renders a tag input field.
+
+- Define a `TagInput` component and use `React.useState()` hook to initialize an array with tags passed as `props`.
+- Use `Array.prototype.map()` on collected nodes to render the list of tags.
+- Define the `addTags` method, which will be executed on pressing the `Enter` key.
+- The `addTags` method uses the `setTabs` method to add the new tag using the spread (`...`) operator to prepend the existing tags and adds the new tag at the end of the `tags` array.
+- Define the `removeTags` method, which will be executed on clicking the delete icon in the tag.
+- Use `Array.prototype.filter()` in `removeTags` method to remove the tag using the `index` of the tag to filter it out from `tags` array.
+
+```css
+.tag-input {
+  display: flex;
+  flex-wrap: wrap;
+  min-height: 48px;
+  padding: 0 8px;
+  border: 1px solid #d6d8da;
+  border-radius: 6px;
+}
+.tag-input input {
+  flex: 1;
+  border: none;
+  height: 46px;
+  font-size: 14px;
+  padding: 4px 0 0;
+  &:focus {
+    outline: transparent;
+  }
+}
+#tags {
+  display: flex;
+  flex-wrap: wrap;
+  padding: 0;
+  margin: 8px 0 0;
+}
+.tag {
+  width: auto;
+  height: 32px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #fff;
+  padding: 0 8px;
+  font-size: 14px;
+  list-style: none;
+  border-radius: 6px;
+  margin: 0 8px 8px 0;
+  background: #0052cc;
+}
+.tag-title {
+  margin-top: 3px;
+}
+.tag-close-icon {
+  display: block;
+  width: 16px;
+  height: 16px;
+  line-height: 16px;
+  text-align: center;
+  font-size: 14px;
+  margin-left: 8px;
+  color: #0052cc;
+  border-radius: 50%;
+  background: #fff;
+  cursor: pointer;
+}
+```
+
+```jsx
+function TagInput(props) {
+  const [tags, setTags] = React.useState(props.tags);
+  const removeTags = indexToRemove => {
+    setTags([...tags.filter((_, index) => index !== indexToRemove)]);
+  };
+  const addTags = event => {
+    if (event.target.value !== "") {
+      setTags([...tags, event.target.value]);
+      event.target.value = "";
+    }
+  };
+  return (
+    <div className="tag-input">
+      <ul id="tags">
+        {tags.map((tag, index) => (
+          <li key={index} className="tag">
+            <span className="tag-title">{tag}</span>
+            <span className="tag-close-icon" onClick={() => removeTags(index)}>
+              x
+            </span>
+          </li>
+        ))}
+      </ul>
+      <input
+        type="text"
+        onKeyUp={event => (event.key === "Enter" ? addTags(event) : null)}
+        placeholder="Press enter to add tags"
+      />
+    </div>
+  );
+}
+```
+
+```jsx
+ReactDOM.render(<TagInput tags={['Nodejs', 'MongoDB']}/>, document.getElementById('root'));
+```