jQuery：未捕获的类型错误：无法读取未定义的属性“nodeType”
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jQuery: Uncaught TypeError: Cannot read property 'nodeType' of undefined
提问by Emerson Maningo
I use jQUery UI Position plugin: http://jqueryui.com/position/to position my icons on a web page. The selectors are grabbed from the database and outputted to JS using PHP in a $myselector variable. This is my current code:
我使用 jQUEry UI Position 插件：http: //jqueryui.com/position/在网页上定位我的图标。选择器从数据库中获取并使用 PHP 在 $myselector 变量中输出到 JS。这是我当前的代码：
var element_selector='<?php echo $myselector;?>';
$('#inline_docxdiv .Featured.Slider').position({
my: "center",
at: "right top",
of: $(element_selector)
});
//append icons,applicable to all
$(divname<?php echo $uniqueid;?>).append('<div id="inline_docxdiv" class="<?php echo $uniqueid;?>"><div id="helpericons_display"><a class="<?php echo $title_toolsetdisplayed;?>" id="questionmarkicon_inlinedoc" title="Display Explanation"><img src="<?php echo $helper_iconpng;?>"></a><a target="_blank" href="<?php echo admin_url().'post.php?post='.$id_toolsetdisplayed.'&action=edit';?>" class="<?php echo $title_toolsetdisplayed;?>" id="sourceicon_inlinedoc" title="View source"><img src="<?php echo $helpersource_iconpng;?>"></a></div></div>');
However the icons are not appended correctly and it returns an error in the console:
但是图标没有正确附加，它在控制台中返回一个错误：
Uncaught TypeError: Cannot read property 'nodeType' of undefined
未捕获的类型错误：无法读取未定义的属性“nodeType”
The strange thing is that if I hard-code the selector in the JS code (not outputted by PHP), everything works OK and no error returned in the console. This is the code where I hard-coded the element selector:
奇怪的是，如果我在 JS 代码中硬编码选择器（不是由 PHP 输出），一切正常，控制台中没有返回错误。这是我硬编码元素选择器的代码：
var element_selector='.idoc-featured-slider';
Is there a way to use PHP to output the selector and not encountering the error? Thanks for any help.
有没有办法使用PHP输出选择器而不遇到错误？谢谢你的帮助。
回答by Leif Nelson
I ran into a similar issue. I was getting the following error:
我遇到了类似的问题。我收到以下错误：
Uncaught TypeError: Cannot read property 'nodeType' of undefined
未捕获的类型错误：无法读取未定义的属性“nodeType”
With these dialog position configuration values:
使用这些对话框位置配置值：
position: {my: "center", at: "left top", of: "window"}
Per the jQuery UI documentation, the value of the "of" property is an object rather than a string. So, when I changed the position values to the following:
根据 jQuery UI 文档，“of”属性的值是一个对象而不是字符串。因此，当我将位置值更改为以下内容时：
position: {my: "center", at: "left top", of: window}
the error disappeared.
错误消失了。
回答by user2120978
The problem is due to the of:$()not working if the object/selector is not valid.
问题是由于of:$()对象/选择器无效时无法工作。
回答by Manan Patel
Normally this Kind of error happen while you don't apply Properties of methods like prop() E.g:$(#"id").prop().if you don't specified its properties than also this error occur.
通常，当您不应用 prop() 等方法$(#"id").prop()的属性时会发生这种错误，例如：如果您没有指定其属性，也会发生此错误。
回答by Brijesh Ray
In my case i just changed the following in my and the error [DataTables warning: table id=bootstrap-data-table2 - Requested unknown parameter '0' for row 0. For more information about this error, please see http://datatables.net/tn/4]was gone:
在我的情况下，我只是在我的和错误[DataTables 警告：table id=bootstrap-data-table2 - Requested unknown parameter '0' for row 0 中更改了以下内容。 有关此错误的更多信息，请参阅http://datatables .net/tn/4]不见了：
From:
从：
[enter image description here][1] <tbody>
@foreach (var item in Model.HRMS_Tbl_ExpenseClaimModelList)
{
<tr>
@if (item.Approved == "1")
{
<td>@item.Date</td>
<td>@item.Date</td>
<td>@item.Type</td>
<td>@item.Amount</td>
}
</tr>
}
</tbody>
TO:
<tbody>
@foreach (var item in Model.HRMS_Tbl_ExpenseClaimModelList)
{
if (item.Approved == "1")
{
<tr>
<td>@item.Date</td>
<td>@item.Date</td>
<td>@item.Type</td>
<td>@item.Amount</td>
</tr>
}
}
</tbody>
回答by RITZZYYY
Please check in your code if any tags is not closed or not. I tried the same and it worked correctly. Apparently , I had an extra tag
如果任何标签未关闭或未关闭，请检查您的代码。我尝试了相同的方法并且它工作正常。显然，我有一个额外的标签
