javascript 在外部 JS 文件中传递 PHP 变量
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Passing a PHP Variable in external JS file
提问by Petra
I've read lots of thread on here but I am still unable to get a variable passed from PHP to an external JS file and wondered if someone could assist?
我在这里阅读了很多线程，但我仍然无法将变量从 PHP 传递到外部 JS 文件，想知道是否有人可以提供帮助？
In my PHP file I have the following;
在我的 PHP 文件中，我有以下内容；
<script type="text/javascript">
var pass_this_variable = <?php $company['website']; ?>;
</script>
<script type="text/javascript" src="/js/track.js"></script>
In the JS file I have the following;
在 JS 文件中，我有以下内容；
document.write('<IFRAME SRC="$company['website']" WIDTH="300" HEIGHT="400"></IFRAME>');
What I am trying to achieve is an IFRAME be opened and populated with what is contained within $company['website']. I know I can just use IFRAME directly in the PHP file, but this isn't what I have been tasked with for my homework. When I do use IFRAME directly in the PHP file it works fine, and if I specify a static URL in the JS file such as http://www.google.comthis also works fine.
我想要实现的是打开一个 IFRAME，并填充 $company['website'] 中包含的内容。我知道我可以直接在 PHP 文件中使用 IFRAME，但这不是我的家庭作业的任务。当我直接在 PHP 文件中使用 IFRAME 时，它工作正常，如果我在 JS 文件（例如http://www.google.com）中指定静态 URL，这也可以正常工作。
Can anyone assist? Thanks
任何人都可以提供帮助吗？谢谢
EDIT:
编辑：
Thanks for the answers so far, however I'm still unable to get it working :(
感谢到目前为止的答案，但是我仍然无法让它工作:(
The frame that I have in track.php (or track.js) won't load the url thats specified in $company['website'], yet if I change it to http://www.google.comits working fine. For some reason the $company['website']value isn't being passed :(
我在 track.php（或 track.js）中的框架不会加载 中指定的 url $company['website']，但如果我将其更改为http://www.google.com，它就可以正常工作。由于某种原因，该$company['website']值没有被传递:(
回答by Ibu
if you want your external javascript to be dynamic you can make it a php file and give the correct header, example:
如果您希望您的外部 javascript 是动态的，您可以将其设为 php 文件并提供正确的标题，例如：
<script type="text/javascript" src="/js/track.php"></script>
track.php
跟踪文件
<?php
// javascript generator
Header("content-type: application/x-javascript");
?>
document.write('<IFRAME SRC="<?php echo $company['website'] ?>" WIDTH="300" HEIGHT="400"></IFRAME>');
回答by AndersTornkvist
PHP file (don't forget echo and quoting):
PHP 文件（不要忘记回显和引用）：
<script type="text/javascript">
var pass_this_variable = '<?php echo $company['website']; ?>';
</script>
<script type="text/javascript" src="/js/track.js"></script>
JS file (use pass_this_variable instead):
JS 文件（使用 pass_this_variable 代替）：
document.write('<IFRAME SRC="'+pass_this_variable+'" WIDTH="300" HEIGHT="400"></IFRAME>');
回答by Naim Zard
You should fix this line:
var pass_this_variable = <?php echo $company['website']; ?>;
你应该修复这一行：
var pass_this_variable = <?php echo $company['website']; ?>;
Adding echoand it should work
添加echo它应该可以工作
回答by Vasanthan.R.P
Call a PHP file inside the JavaScript source. You can find the tutorial here:
在 JavaScript 源代码中调用 PHP 文件。你可以在这里找到教程：
http://www.javascriptkit.com/javatutors/externalphp.shtml.
http://www.javascriptkit.com/javatutors/externalphp.shtml。
So your code will be like this:
所以你的代码会是这样的：
<script type="text/javascript" src="track.php?company=<?php echo $company['website']; ?>"></script>
In the PHP file you can fetch the value through $_GETvariable and use it in the iframe. Make sure to sanitize the input.
在 PHP 文件中，您可以通过$_GET变量获取值并在iframe 中使用它。确保对输入进行消毒。
回答by Omer Aslam
JavaScript provides you the functionality of ajax for the purpose of reading the PHP or text files. Why don't you create the HTML iframeinside a PHP file with your variables parsed and then take back the response and "throw" it inside a div.
JavaScript 为您提供 ajax 功能，用于读取 PHP 或文本文件。为什么不在iframePHP 文件中创建 HTML并解析变量，然后收回响应并将其“抛出”到 div 中。
回答by MIlan Modh
The code for your PHP file:
PHP 文件的代码：
$cmp = $company['website'];
echo '<input type="hidden" id="cmp1" name="cmp1" value="' . $cmp . '" />';
The code for your JavaScript (.js) file to get the PHP file value:
用于获取 PHP 文件值的 JavaScript (.js) 文件代码：
var company = document.getElementById('cmp').value;
