lovecoding
/
web250825


			
				
					
						
						
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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>Document</title>
    <style>
        #box {
            width: 200px;
            height: 300px;
            background: #f00;
            margin-top: 19px;
            margin-left: 30px;
        }
    </style>
</head>
<body>
    <div id="box"></div>
    <script>
        var box = document.getElementById("box");
        console.log(box.offsetLeft)
    </script>
</body>
</html>