javascript 在 FBJS/Facebook 中使用 getElementById().getValue 的问题！
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problem with using getElementById().getValue in FBJS/Facebook !
提问by Ahsan
I am using this code to generate hidden HTML code in Facebook :
我正在使用此代码在 Facebook 中生成隐藏的 HTML 代码：
echo "<div id=\"y257y\" style=\"display:none;\">".$fdesc."</div>";
And, I am trying to get this element back in JS using the following code
而且，我正在尝试使用以下代码在 JS 中获取此元素
newVal=document.getElementById('y257y').getValue();
But, I am getting an error: Undefined
但是，我收到一个错误：未定义
Can anyone kindly help me out ?
任何人都可以帮助我吗？
Thanks.
谢谢。
- ahsan
- 阿山
回答by rsp
Instead of:
代替：
newVal = document.getElementById('y257y').getValue();
try using:
尝试使用：
newVal = document.getElementById('y257y').innerHTML;
Are you using any JavaScript library, like jQuery or Prototype? If you're using jQuery:
您是否使用任何 JavaScript 库，例如 jQuery 或 Prototype？如果您使用 jQuery：
newVal = $('#y257y').html();
Other suggestions:
其他建议：
Use hidden form element:
使用隐藏的表单元素：
echo "<input type=hidden id=y257y value=\"$fdesc\">";
and in JavaScript:
在 JavaScript 中：
newVal = document.getElementById('y257y').value;
Or just output a <script>tag:
或者只是输出一个<script>标签：
echo "<script>newVal = \"$fdesc\";</script>";
and there's no need to find the value in the DOM – it's already in JavaScript.
并且不需要在 DOM 中查找值——它已经在 JavaScript 中了。
回答by Tom Gruner
Try using a textarea? Since at least that may have a getValue method if you are really lucky:
尝试使用文本区域？如果你真的很幸运，至少它可能有一个 getValue 方法：
$fdesc = str_replace('<', '<', $fdesc);
$fdesc = str_replace('>', '>', $fdesc);
echo "<textarea id=\"y257y\" style=\"display:none;\">".$fdesc."</textarea>";
newVal=document.getElementById('y257y').getValue();
newVal = newVal.replace(">", ">")
newVal = newVal.replace("<", "<")
But something tells me that is not going to work for you, facebook may not like it. Seems easier just to do this:
但是有些东西告诉我这对您不起作用，Facebook 可能不喜欢它。这样做似乎更容易：
$fdesc = <<<EOD
<div>Here is your html</div>
<p>And some more </p>
EOD;
$fdesc = str_replace("'", "\'", $fdesc); //Escape single quotes
$fdesc = str_replace("\n", "";', $fdesc); //Get rid of line breaks
echo "var fdesc = '$fdesk';";
