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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>檢測數(shù)據(jù)類型</title> <script type="text/javascript"> var box= true; document.write(typeof box); </script> </head> <body> </body> </html>
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>檢測數(shù)據(jù)類型</title> <script type="text/javascript"> var box="php 中文網(wǎng)"; document.write(typeof box); </script> </head> <body> </body> </html>
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>檢測數(shù)據(jù)類型</title> <script type="text/javascript"> var box=888; document.write(typeof box); </script> </head> <body> </body> </html>
??
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>檢測數(shù)據(jù)類型</title>
<script type="text/javascript">
var box={};
document.write(typeof box);
</script>
</head>
<body>
</body>
</html>??: ? ??? ??? ?????? ???? ??? ?????
NULL ?? ??
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>檢測數(shù)據(jù)類型</title> <script type="text/javascript"> var box=null; document.write(typeof box); </script> </head> <body> </body> </html>
?? ??
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>檢測數(shù)據(jù)類型</title>
<script type="text/javascript">
function box(){
}
document.write(typeof box);
</script>
</head>
<body>
</body>
</html>
??: box? ?????. ?? ?? box(){}???. ???? ?? ??? function
???.
