empty
length是8? empty哪兒來的啊
qq_慕勒8168853
2021-08-06
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length是8? empty哪兒來的啊
2021-08-06
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2021-08-06
<!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 = ['*','##',"***","&&","****","##*"];
? ?arr[7] = "**";
?//顯示數(shù)組長度
// alert(arr.length);
?
?//將數(shù)組內(nèi)容輸出，完成達(dá)到的效果。
document.write(arr[0]+'<br/>');
document.write(arr[7]+'<br/>');
document.write(arr[2]+'<br/>');
document.write(arr[4]+'<br/>');
</script>
</head>
<body>
</body>
</html>