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jQuery get the image src
...onsole.log('for relative image url ' + $('#imageId').attr('src'));
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<img id='imageId' src='images/image1.jpg' height='50px' width='50px'/>
<input type='button' onclick='showImgUrl()' ...
what is the difference between a portlet and a servlet?
...HTML code that contains tags such
as body, frame, frameset, head, html, or title.
A Portlet unlike a servlet doesn’t have URL attached to it so it
cannot be accessed directly. Access is only through the portal page
which holds the portlet.
Portlets can be provided with controls to manipulate its...
Boolean operators && and ||
...rror: object 'a' not found
Finally, see section 8.2.17 in The R Inferno, titled "and and andand".
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Suppress command line output
...2>&1
and all will be better.
That works because stdout is file descriptor 1, and stderr is file descriptor 2 by convention. (0 is stdin, incidentally.) The 2>&1 copies output file descriptor 2 from the new value of 1, which was just redirected to the null device.
This syntax is (lo...
How to open every file in a folder?
I have a python script parse.py, which in the script open a file, say file1, and then do something maybe print out the total number of characters.
...
Eclipse interface icons very small on high resolution screen in Windows 8.1
...easier way to do this! Its just a program and you shouldn't have to modify scripts, or install third party tools. The issue is related to High DPI scaling as mentioned above but what I think a lot of you are missing is that you can't directly modify compatibility settings on the launcher itself. The...
How to convert a SVG to a PNG with ImageMagick?
...ike -resize 200 for width or -resize x200 for height. See: imagemagick.org/script/command-line-processing.php#geometry for exhaustive ImageMagick geometry options.
– John
Jan 11 '15 at 22:45
...
back button callback in navigationController in iOS
...ent handler
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@”back”
style:UIBarButtonItemStyleBordered
target:self
action:@selector(handleBack:)];
self.navigationItem.leftBarButtonItem = backButton;
[backButton release];
}
- (void) handleBack:(id)sender
{
// pop to root vi...
How to query as GROUP BY in django?
...ass BookQuerySet(QuerySet, GroupByMixin):
pass
class Book(Model):
title = TextField(...)
author = ForeignKey(User, ...)
shop = ForeignKey(Shop, ...)
price = DecimalField(...)
class GroupedBookListView(PaginationMixin, ListView):
template_name = 'book/books.html'
model ...
Add a common Legend for combined ggplots
...or flexdashboard) with renderPlot()? It works perfectly fine in a normal R script with normal plots. But when I do the exact same thing with plots made with renderPlot() in my flexdashboard, nothing appears.
– Tingolfin
Jan 26 '18 at 14:14
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