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Convert blob URL to normal URL
...t be available on other pages, it will not be available in other browsers, and it will not be available from other computers.
Therefore it does not make sense, in general, to convert a Blob URL to a "normal" URL. If you wanted an ordinary URL, you would have to send the data from the browser to a s...
Find mouse position relative to element
..., one of them with the event attached to it, it can be confusing to understand what your browser sees as the parent. Here, you can specify which parent.
You take the mouse position, and then subtract it from the parent element's offset position.
var x = evt.pageX - $('#element').offset().left;
var y...
Email validation using jQuery
I'm new to jQuery and was wondering how to use it to validate email addresses.
35 Answers
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SVG fill color transparency / alpha?
...attribute; fill-opacity: This attribute takes a decimal number between 0.0 and 1.0, inclusive; where 0.0 is completely transparent.
For example:
<rect ... fill="#044B94" fill-opacity="0.4"/>
Additionally you have the following:
stroke-opacity attribute for the stroke
opacity for the enti...
Convert generator object to list for debugging [duplicate]
When I'm debugging in Python using IPython, I sometimes hit a break-point and I want to examine a variable that is currently a generator. The simplest way I can think of doing this is converting it to a list, but I'm not clear on what's an easy way of doing this in one line in ipdb , since I'm so n...
What's the meaning of exception code “EXC_I386_GPFLT”?
...ut of memory bounds, but it could be that your code is going out of bounds and causing bad code/data to be used in a way that makes for an protection violation of some sort.
Unfortunately it can be hard to figure out exactly what the problem is without more context, there are 27 different causes l...
$.focus() not working
... focus from the dev console. If you run the following code in your console and then quickly click in your browser window after, you will see it focus the search box:
setTimeout(function() { $('input[name="q"]').focus() }, 3000);
As for your other one, the one thing that has given me trouble in th...
Fade Effect on Link Hover?
...it's a lot easier than messing with JS, browser support is reasonably good and it's merely cosmetic so it doesn't matter if it doesn't work.
Something like this gets the job done:
a {
color:blue;
/* First we need to help some browsers along for this to work.
Just because a vendor prefix i...
Can dplyr package be used for conditional mutating?
... TRUE ~ NA_real_))
Added - arithmetic/na_if If the values are numeric and the conditions (except for the default value of NA at the end) are mutually exclusive, as is the case in the question, then we can use an arithmetic expression such that each term is multiplied by the desired result using...
django MultiValueDictKeyError error, how do I deal with it
...
Use the MultiValueDict's get method. This is also present on standard dicts and is a way to fetch a value while providing a default if it does not exist.
is_private = request.POST.get('is_private', False)
Generally,
my_var = dict.get(<key>, <default>)
...