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<!DOCTYPE html> <html> <head> <style> div { color: red; } </style> </head> <body> <h1>使用 JavaScript 设置初始值 initial</h1> <div> <h1 id="bc">Hello World</h1> <ul> <li id="a">Item one</li> <li id="b">Item two</li> <li id="c">Item three</li> </ul> </div> <p>单击“试一试”按钮，将第二个列表项的颜色属性值设置为"initial"：</p> <button onclick="myFunction()">试一试</button> <script> function myFunction() { document.getElementById("b").style.color = "initial"; } </script> <p><b>注意：</b>“initial”关键字在 Internet Explorer 11 及更早版本中不受支持。</p> </body> </html>