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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> var test1= new Boolean(1); var test2= new Boolean(0); var test3= new Boolean(true); var test4= new Boolean(false); var test5= new Date(); var test6= new String("999 888"); var test7=12345; document.write(String(test1)+ "<br>"); document.write(String(test2)+ "<br>"); document.write(String(test3)+ "<br>"); document.write(String(test4)+ "<br>"); document.write(String(test5)+ "<br>"); document.write(String(test6)+ "<br>"); document.write(String(test7)+ "<br>"); </script> </body> </html>
运行结果