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Using an if statement to check if a div is empty
...SS:
.someDiv:empty {
display: none;
}
Unfortunately there is no CSS selector that selects the previous sibling element. There is only for the next sibling element: x ~ y
.someDiv:empty ~ .anotherDiv {
display: none;
}
Using jQuery
Checking text length of element with text() function
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jQuery: count number of rows in a table
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Use a selector that will select all the rows and take the length.
var rowCount = $('#myTable tr').length;
Note: this approach also counts all trs of every nested table!
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Separation of business logic and data access in django
...ActivateUserForm(forms.Form):
user_id = IntegerField(widget = UsernameSelectWidget, verbose_name="Select a user to activate")
# the username select widget is not a standard Django widget, I just made it up
def clean_user_id(self):
user_id = self.cleaned_data['user_id']
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Android Studio: Default project directory
... Settings > Project Opening > Default Directory
Open 'Preferences'
Select System Settings -> Project Opening
Set 'Default Directory' where you want.
It worked for me. I tried Android Studio 3.5.
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Moving UITabBarItem Image down?
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You can do it via storyboard too. Select your tabbaritem, go to size inspector and assign the appropriate insets.
*Demonstrated on Xcode, Version 7.3.1 (7D1014)
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
...ses a ThreePaneLayout to hold a pair of ListFragment widgets and a Button. Selecting something in the left fragment adds (or updates the contents of) the middle fragment. Selecting something in the middle fragment sets the caption of the Button, plus executes hideLeft() on the ThreePaneLayout. Press...
Most tricky/useful commands for gdb debugger [closed]
...n it in reverse
* reverse-finish -- Execute backward until just before the selected stack frame is called
* reverse-next ('rn') -- Step program backward, proceeding through subroutine calls.
* reverse-nexti ('rni') -- Step backward one instruction, but proceed through called subroutines.
* reverse-s...
How to upload, display and save images using node.js and express [closed]
.... This needs to be done using an "Upload" button, which prompts for a file-selection.
1 Answer
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Check/Uncheck checkbox with JavaScript (jQuery or vanilla)?
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You really don't need the array index if you are only selecting one element. But I guess if you want to be explicit. haha
– Rizowski
Apr 22 '15 at 18:46
6
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Comment the interface, implementation or both?
...mplementation with the comment from the interface when you right click and select "Document This" on the method.
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