专注前端素材！
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> </head> <body> <script> document.write(isFinite(123)+ "<br>"); document.write(isFinite(-1.23)+ "<br>"); document.write(isFinite(5-2)+ "<br>"); document.write(isFinite(0)+ "<br>"); document.write(isFinite("Hello")+ "<br>"); document.write(isFinite("2005/12/12")+ "<br>"); </script> </body> </html>
运行结果