jQuery Dimensions InnerWidth Example

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<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
	<title>jQuery innerWidth() Get & Set Example</title>
	<style>
		body {
			font-family: Arial, sans-serif;
			padding: 40px;
			background-color: #f9f9f9;
		}
		h1 {
			color: #333;
		}
		p {
			font-size: 16px;
			color: #444;
		}
		.box {
			position: relative;
			padding: 30px;
			background-color: #E3F2FD;
			border: 30px solid #1E88E5;
			color: #0D47A1;
			margin-bottom: 15px;
			box-sizing: content-box;
			width: 200px;
			overflow: visible;
			height: 120px;
		}
		.content-overlay {
			position: absolute;
			top: 30px;
			left: 30px;
			width: calc(100% - 60px);
			height: calc(100% - 60px);
			background: rgba(0, 0, 0, 0.1);
			pointer-events: none;
		}
		.label {
			position: absolute;
			padding: 2px 6px;
			font-size: 12px;
			color: #fff;
			background: #333;
			box-shadow: 0 1px 3px rgba(0,0,0,0.3);
			border-radius: 3px;
			white-space: nowrap;
		}
		.label.border {
			top: -20px;
			left: 30px;
		}
		.label.padding {
			top: 5px;
			left: 30px;
		}
		.label.content {
			top: 35px;
			left: 30px;
		}
		.inner-line {
			position: absolute;
			bottom: 30px;
			left: 0px;
			border-top: 2px dotted red;
			z-index: 1;
		}
		.inner-label {
			position: absolute;
			bottom: 10px;
			left: 50%;
			transform: translateX(-50%);
			background: #C62828;
			color: #fff;
			padding: 2px 6px;
			font-size: 12px;
			border-radius: 3px;
			z-index: 2;
			white-space: nowrap;
		}
		.info-box {
			position: absolute;
			top: 50%;
			left: 50%;
			transform: translate(-50%, -50%);
			background: rgba(255,255,255,0.9);
			color: #333;
			padding: 10px 15px;
			font-size: 14px;
			border-radius: 4px;
			box-shadow: 0 2px 5px rgba(0,0,0,0.2);
			z-index: 3;
			text-align: center;
			width: fit-content;
		}
		button {
			margin-top: 15px;
			padding: 10px 20px;
			background-color: #1E88E5;
			color: white;
			font-size: 14px;
			border: none;
			border-radius: 4px;
			cursor: pointer;
			margin-right: 10px;
		}
		button:hover {
			background-color: #1565C0;
		}
	</style>
	<script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
</head>
<body>

<h1>jQuery <code>innerWidth()</code> Method – Get & Set</h1>

<p>Click the buttons below to get or set the <strong>innerWidth</strong> of the box. Labels mark the <em>Border</em>, <em>Padding</em>, and <em>Content</em> areas; the red dotted line shows the <code>innerWidth()</code> area (content + padding).</p>

<div class="box" id="content">
		<div class="label border">Border: 30px</div>
		<div class="label padding">Padding: 30px</div>
		<div class="label content">Content: 200px</div>
		<div class="content-overlay"></div>
		<div class="info-box" id="infoBox">Result will appear here.</div>
	</div>

<button id="getInnerWidthBtn">Get innerWidth</button>
	<button id="setInnerWidthBtn">Set innerWidth to 300px</button>

const $box = $('#content');
				const iw = $box.innerWidth();
				const width = $box.width();
				$('.label.content').text('Content: ' + width + 'px');

$box.append(
					$('<div class="inner-line"></div>').css({
						width: iw + 'px'
					}),
					$('<div class="inner-label">innerWidth</div>')
				);
			}

drawInnerWidthLine();

$('#getInnerWidthBtn').click(function () {
				const iw = $('#content').innerWidth();
				$('#infoBox').text('innerWidth: ' + iw + 'px');
			});

$('#setInnerWidthBtn').click(function () {
				$('#content').innerWidth(300);
				drawInnerWidthLine();
				$('#infoBox').text('innerWidth set to 300px');
			});
		});
	</script>

</body>
</html>

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