abstract：<script type="text/javascript">var a = "8";var b =2;alert(typeof a);alert(typeof b);</script>輸出為：string number
<script type="text/javascript">
var a = "8";
var b =2;
alert(typeof a);
alert(typeof b);
</script>
輸出為：string number
Correcting teacher：韋小寶Correction time：2019-01-15 15:50:18
Teacher's summary：你這些的也太簡(jiǎn)單了吧 不過(guò)并沒(méi)有錯(cuò)誤 課后要記得多練習(xí) 繼續(xù)加油吧