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編輯您的代碼：
<html> <head> </head> <body> <div style="border:1px solid black;width:200px;height:200px;overflow:auto"> This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. </div> <button class="btn1">獲得 scrollbar top offset</button> <p>試著移動(dòng)滾動(dòng)條，然后再次點(diǎn)擊按鈕。</p> </body> </html>
查看結(jié)果:
請?jiān)谏厦娴奈谋究蛑芯庉嬆拇a，然后單擊提交按鈕測試結(jié)果。
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