点击运行
<!DOCTYPE html> <html> <body> <h2>JavaScript getSeconds()</h2> <p>getSeconds() 方法以数字（0-59）返回日期的秒：</p> <p id="demo"></p> <script> var d = new Date(); document.getElementById("demo").innerHTML = d.getSeconds(); </script> </body> </html>
运行结果
