Update TagInput.md

This commit is contained in:
Angelos Chalaris
2019-10-06 07:36:18 +03:00
committed by GitHub
parent 34a0ac1824
commit 7c2121e75b

View File

@ -1,29 +1,26 @@
---
title: TagInput
tags: visual,input,intermediate
tags: input,visual,state,intermediate
---
Renders an input field to add tags.
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 `addTab` method, which will be executed on pressing the `Enter` key.
- `addTab` 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 `removeTab` method, which will be executed on clicking the delete icon in the tag.
- Use `Array.prototype.filter()` in `removeTab` method to remove the tag using the `index` of the tag to filter it out from tags array.
- 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;
align-items: flex-start;
flex-wrap: wrap;
min-height: 48px;
width: 480px;
padding: 0 8px;
border: 1px solid rgb(214, 216, 218);
border: 1px solid #d6d8da;
border-radius: 6px;
}
.tag-input input {
flex: 1;
border: none;
@ -31,17 +28,15 @@ Renders an input field to add tags.
font-size: 14px;
padding: 4px 0 0;
&:focus {
outline: transparent;
outline: transparent;
}
}
#tags {
display: flex;
flex-wrap: wrap;
padding: 0;
margin: 8px 0 0;
}
.tag {
width: auto;
height: 32px;
@ -56,11 +51,9 @@ Renders an input field to add tags.
margin: 0 8px 8px 0;
background: #0052cc;
}
.tag-title {
margin-top: 3px;
}
.tag-close-icon {
display: block;
width: 16px;
@ -81,36 +74,32 @@ 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 !== '') {
if (event.target.value !== "") {
setTags([...tags, event.target.value]);
event.target.value = '';
event.target.value = "";
}
}
};
return (
<div className='tag-input'>
<ul id='tags'>
<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)}
>
<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'
type="text"
onKeyUp={event => (event.key === "Enter" ? addTags(event) : null)}
placeholder="Press enter to add tags"
/>
</div>
)
);
}
```