<select v-model="selected">
<option v-for="option in options" v-bind:value="option.value">
{{ option.text }}
</option>
</select>
<span>Selected: {{ selected }}</span>
new Vue({
el: '...',
data: {
selected: 'A',
options: [
{ text: 'One', value: 'A' },
{ text: 'Two', value: 'B' },
{ text: 'Three', value: 'C' }
]
}
})
sudo apt update
sudo apt install telegram-desktop
import React, { useState } from 'react';
export function App(props) {
const [value, setValue] = useState( '');
const [bg, setBg] = useState('red');
const handleChange = event => {
setValue(event.target.value);
if(value.length < 5 || value.length>50){
setBg('red')
}
else{
setBg('')
}
};
return (
<div className='App'>
<input
type='text'
value={value}
onChange={handleChange}
style={{ backgroundColor: bg}}
/>
<pre>{value}</pre>
</div>
);
}