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<!DOCTYPE html> <html> <head> <style> #myDIV { width: 400px; height: 200px; background-color: lightblue; border: 1px solid black; } </style> </head> <body> <h1>使用 JavaScript 更改空格</h1> <p>单击“试一试”按钮以确保 DIV 元素内的文本从不换行：</p> <button onclick="myFunction()">试一试</button> <div id="myDIV"> Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat.</div> <script> function myFunction() { document.getElementById("myDIV").style.whiteSpace = "nowrap"; } </script> </body> </html>