数组中已有三个数值88,90,68,为数组新增加一个元素(第四个),值为99。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>增加新元素</title> <script language="javascript"> var myarray=new Array(); myarray[0]=88; myarray[1]=90; myarray[2]=68; document.write("数组第一个值是:"+myarray[0]+"<br>"); document.write("数组第二个值是:"+myarray[1]+"<br>"); document.write("数组第三个值是:"+myarray[2]+"<br>"); </script> </head> <body> </body> </html>