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How to check 'undefined' value in jQuery
How we can add a check for an undefined variable, like:
11 Answers
11
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I don't remember my android debug.keystore password
How can i see my debug.keystore password?
I entered my password 3 or 4 month ago and now i don't remember.
4 Answers
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How to pick just one item from a generator?
I have a generator function like the following:
7 Answers
7
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How to change the default collation of a table?
...t UTF-8. – Rich Remer Mar 28 '18 at 23:41
and
That seems quite important, glad I read the comments and thanks @RichRemer . Nikki , I think you should edit that in your answer considering how many views this gets. See here https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-utf8.html and...
Multiple returns from a function
...y and return it; create a conditional to return a dynamic variable, etc.
For instance, this function would return $var2
function wtf($blahblah = true) {
$var1 = "ONe";
$var2 = "tWo";
if($blahblah === true) {
return $var2;
}
return $var1;
}
In application:
echo wtf();
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Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreat
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I more often have p7zip installed instead of zip and in this case it's important to specify file format: 7z d -tzip file.jar dir/unwanted_file.txt
– lapo
Jul 31 '13 at 10:02
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Parsing query strings on Android
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Since Android M things have got more complicated. The answer of android.net.URI.getQueryParameter() has a bug which breaks spaces before JellyBean.
Apache URLEncodedUtils.parse() worked, but was deprecated in L, and removed in M.
So the best answer now is ...
Add table row in jQuery
...roach you suggest is not guaranteed to give you the result you're looking for - what if you had a tbody for example:
<table id="myTable">
<tbody>
<tr>...</tr>
<tr>...</tr>
</tbody>
</table>
You would end up with the following:
<table...
Tying in to Django Admin's Model History
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The admin history is just an app like any other Django app, with the exception being special placement on the admin site.
The model is in django.contrib.admin.models.LogEntry.
When a user makes a change, add to the log like this (stolen ...
How to do if-else in Thymeleaf?
...: the th:switch and th:case attributes introduced in Thymeleaf 2.0.
They work as you'd expect, using * for the default case:
<div th:switch="${user.role}">
<p th:case="'admin'">User is an administrator</p>
<p th:case="#{roles.manager}">User is a manager</p>
<...