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我正在制作一个关于 JavaScript 的视频系列（我负责我们公司的网站，但没有接受过真正的网页设计培训）。无论如何，通过这些视频工作，我注意到我的嵌套语句的程序都没有工作。有没有人能看到我做错了什么？

<html>
<head>
<title>Using Nested "for" Loops</title>
<script language="Javascript" type="text/javascript">

for (var jsNotjava=0; jsNotjava<8; jsNotjava++) {
    document.write("JavaScript is not Java!<br>");
         for (var jsNotjava2=1; jsNotJava2<2; jsNotjava2++) {
        document.write("Are you with me so far?<br>");
    }
}

</script>
</head>
<body>
</body>
</html>
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1 回答 1

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Right now you're writing in the head of the document. Write in the body. You also have a case problem (in the inner loop, jsNotJava2 != jsNotjava2) :

<html>
<head>
<title>Using Nested "for" Loops</title>
</head>
<body>
<script language="Javascript" type="text/javascript">

for (var jsNotjava=0; jsNotjava<8; jsNotjava++) {
    document.write("JavaScript is not Java!<br>");
    for (var jsNotjava2=1; jsNotjava2<2; jsNotjava2++) {
        document.write("Are you with me so far?<br>");
    }
}

</script>
</body>
</html>

But you should try to go as fast as possible to the lessons not involving document.write, it's terrible practice most of the times.

于 2013-11-12T15:06:04.977 回答