jQuery Set Value Callback Example

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<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8">
		<title>jQuery val() - Callback</title>
		<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
		<style>
			body {
				font-family: sans-serif;
				padding: 30px;
				background: #f9f9f9;
			}

input {
				padding: 8px;
				width: 250px;
				margin-bottom: 10px;
				display: block;
				border: 1px solid #ccc;
				border-radius: 4px;
			}

button {
				margin-top: 10px;
				padding: 10px 15px;
				background: #007bff;
				color: white;
				border: none;
				border-radius: 4px;
				cursor: pointer;
			}

button:hover {
				background: #0056b3;
			}

table {
				margin-top: 30px;
				border-collapse: collapse;
				width: 100%;
				max-width: 600px;
				background: #fff;
				border: 1px solid #ccc;
			}

th, td {
				padding: 10px;
				border: 1px solid #ccc;
				text-align: left;
			}

th {
				background-color: #f1f1f1;
			}
		</style>
	</head>
	<body>

<h2>Update Inputs Using Callback Logic</h2>

<label>Username:</label>
		<input type="text" id="username" value="JohnDoe">

<label>Email:</label>
		<input type="text" id="email" value="john@example.com">

<label>Phone:</label>
		<input type="text" id="phone" value="03001234567">

<button id="updateInputs">Update Fields</button>

<table>
			<tr>
				<th>Username</th>
				<th>Email</th>
				<th>Phone</th>
			</tr>
			<tr>
				<td id="outUsername"></td>
				<td id="outEmail"></td>
				<td id="outPhone"></td>
			</tr>
		</table>

$("#updateInputs").click(function(){
					$("input[type='text']").val(function(index, currentValue){
						const id = $(this).attr("id");

if(id === "username") {
							return currentValue.toLowerCase();
						}

if(id === "email") {
							const [user, domain] = currentValue.split("@");
							return user + "@****.com";
						}

if(id === "phone") {
							return currentValue.replace(/^(d{4})(d{3})(d{4})$/, "$1-$2-$3");
						}

return currentValue;
					});

// Update table
					$("#outUsername").text($("#username").val());
					$("#outEmail").text($("#email").val());
					$("#outPhone").text($("#phone").val());
				});
			});
		</script>

</body>
</html>

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