<html>
<head>
<meta charset="UTF-8" />
<script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
const { useState } = React;
function App() {
const [inputText, setInputText] = useState('');
const isUppercase = /^[A-Z]/.test(inputText);
return (
<div className='container'>
<input
type="text"
placeholder="Enter a string"
onChange={(e) => setInputText(e.target.value)}
className="input-element"
/>
<p className="paragraph-element">Is the first letter uppercase? {isUppercase ? 'Yes' : 'No'}</p>
</div>
);
}
ReactDOM.render(<App />, document.getElementById("app"));
</script>
<style>
.container {
font-family: Arial, sans-serif;
padding: 20px;
border-radius: 5px;
box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
max-width: 600px;
margin: 0 auto;
text-align: center;
}
.input-element {
padding: 10px;
border: 2px solid #ccc;
border-radius: 5px;
width: 300px;
font-size: 16px;
margin-bottom: 20px;
text-align: center;
}
.input-element::placeholder {
color: #aaa;
}
.paragraph-element {
font-size: 20px;
color: #333;
text-align: center;
}
/* Style for the "Yes" and "No" text */
.paragraph-element::before {
content: 'Is the first letter uppercase? ';
font-weight: bold;
}
.paragraph-element::after {
content: '';
display: inline-block;
width: 10px;
height: 10px;
border-radius: 50%;
margin-left: 5px;
}
/* Styling for the "Yes" and "No" indicator */
.paragraph-element::after {
content: '';
display: inline-block;
width: 10px;
height: 10px;
border-radius: 50%;
margin-left: 5px;
}
.paragraph-element::after {
content: '';
display: inline-block;
width: 10px;
height: 10px;
border-radius: 50%;
margin-left: 5px;
}
/* Styling for the "Yes" and "No" indicator based on the state */
.paragraph-element::after {
content: '';
display: inline-block;
width: 10px;
height: 10px;
border-radius: 50%;
margin-left: 5px;
background-color: #5ab45e;
/* Green for "Yes" */
}
.paragraph-element::before {
content: 'Is the first letter uppercase? ';
font-weight: bold;
}
.paragraph-element::after {
content: '';
display: inline-block;
width: 10px;
height: 10px;
border-radius: 50%;
margin-left: 5px;
background-color: #f44336;
/* Red for "No" */
}
</style>
</body>
</html>