大神看看為什么我這數(shù)組的長(zhǎng)度顯示不出來(lái)看？
<!DOCTYPE ?HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>數(shù)組</title>
<script type="text/javascript">
?//創(chuàng)建數(shù)組
?var arr["1","gjyf","hfhgch","dsfxx","rfdtt"]
?
?//顯示數(shù)組長(zhǎng)度
?
alert(arr.length);?
//將數(shù)組內(nèi)容輸出，完成達(dá)到的效果。
?
</script>
</head>
<body>
</body>
</html>
2016-10-13
創(chuàng)建數(shù)組寫(xiě)錯(cuò)了，var arr = ["1","gjyf","hfhgch","dsfxx","rfdtt"]；
2016-10-13
確實(shí)是自己粗心了，看了好長(zhǎng)時(shí)間都沒(méi)有看出來(lái)
2016-10-13
剛才試了，還是不行，彈不出對(duì)話框
2016-10-13
是不是聲明變量之后也應(yīng)該加上個(gè)分號(hào)