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<!DOCTYPE html> <html> <body style="background:#f3f3f3 url('/i/pic/flower.gif');"> <h1>HTML Style 对象</h1> <h2>backgroundRepeat 属性</h2> <button type="button" onclick="repeatVert()">仅垂直重复背景图像</button> <button type="button" onclick="repeatHori()">仅水平重复背景图像</button> <script> function repeatVert() { document.body.style.backgroundRepeat = "repeat-y"; } function repeatHori() { document.body.style.backgroundRepeat = "repeat-x"; } </script> </body> </html>