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<!DOCTYPE html> <html> <body> <h2>JavaScript setMonth()</h2> <p>getMonth() 方法设置日期对象的月份。</p> <p>请注意，月份从 0 开始计算。12 月是第 11 个月：</p> <p id="demo"></p> <script> var d = new Date(); d.setMonth(11); document.getElementById("demo").innerHTML = d; </script> </body> </html>