<html> <body> <script type="text/javascript"> document.write(isNaN(123)+ "<br />") document.write(isNaN(-1.23)+ "<br />") document.write(isNaN(5-2)+ "<br />") document.write(isNaN(0)+ "<br />") document.write(isNaN("Hello")+ "<br />") document.write(isNaN("2005/12/12")+ "<br />") </script> </body> </html>
编辑上面的文字,按下“查看结果”,效果会显示在右边 Create by 软晨网(RuanChen.com)