fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> </head> <body> <script> var x=1.7976931348623157E+10308; document.write(x + "<br>"); var y=-1.7976931348623157E+10308; document.write(y); </script> </body> </html>
运行结果