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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>runoops基础编程教程(runoops.com)</title> </head> <body> <script> var b1 = new Boolean(0); var b2 = new Boolean(1); var b3 = new Boolean(""); var b4 = new Boolean(null); var b5 = new Boolean(NaN); var b6 = new Boolean("false"); document.write("0 为布尔值 " + b1 + "<br>"); document.write("1 为布尔值 " + b2 + "<br>"); document.write("空字符串是布尔值 " + b3 + "<br>"); document.write("null 是布尔值 " + b4 + "<br>"); document.write("NaN 是布尔值 " + b5 + "<br>"); document.write("字符串'false' 是布尔值" + b6 + "<br>"); </script> </body> </html>
运行结果：