如何将JavaScript放入JavaScript中? [英] How to put php inside JavaScript?
问题描述
我尝试过(但不能正常工作):
<?php
$htmlString= 'testing';
?>
<html>
<body>
<script type="text/javascript">
var htmlString=<?php echo $htmlString; ?>;
alert(htmlString);
</script>
</body>
</html>
这是教程:
推荐答案
试试这个:
<?php $htmlString= 'testing'; ?>
<html>
<body>
<script type="text/javascript">
// notice the quotes around the ?php tag
var htmlString="<?php echo $htmlString; ?>";
alert(htmlString);
</script>
</body>
</html>
遇到类似这样的问题时,最好检查浏览器是否存在JavaScript错误。不同的浏览器有不同的显示方式,但寻找一个javascript控制台或类似的东西。另外,检查浏览器查看的页面来源。
When you run into problems like this one, a good idea is to check your browser for JavaScript errors. Different browsers have different ways of showing this, but look for a javascript console or something like that. Also, check the source of your page as viewed by the browser.
有时初学者对字符串中的引号感到困惑:在PHP部分中,您指定了'testing'
到 $ htmlString
。这会将一个字符串值放在该变量中,但该值中没有引号:它们仅用于解释器,因此他知道:哦,现在是一个字符串文字。
Sometimes beginners are confused about the quotes in the string: In the PHP part, you assigned 'testing'
to $htmlString
. This puts a string value inside that variable, but the value does not have the quotes in it: They are just for the interpreter, so he knows: oh, now comes a string literal.
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