单选题
<html> <bod...
发布于 2022-03-03 14:10:51
<html>
<body>
<script type="text/javascript">
var test=new Boolean()
document.write(test)
document.write("<br />")
var test=new Boolean(0)
document.write(test)
document.write("<br />")
var test=new Boolean(null)
document.write(test)
document.write("<br />")
var test=new Boolean("")
document.write(test)
document.write("<br />")
var test=new Boolean(NaN)
document.write(test)
document.write("<br />")
</script>
</body>
</html>
上述代码的输出结果为（ ）
<body>
<script type="text/javascript">
var test=new Boolean()
document.write(test)
document.write("<br />")
var test=new Boolean(0)
document.write(test)
document.write("<br />")
var test=new Boolean(null)
document.write(test)
document.write("<br />")
var test=new Boolean("")
document.write(test)
document.write("<br />")
var test=new Boolean(NaN)
document.write(test)
document.write("<br />")
</script>
</body>
</html>
上述代码的输出结果为（ ）
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