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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 - $('#element').offset().left;
var y...
What is the difference between background and background-color
...'s the difference between specifying a background color using background and background-color ?
17 Answers
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How do I programmatically force an onchange event on an input?
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Create an Event object and pass it to the dispatchEvent method of the element:
var element = document.getElementById('just_an_example');
var event = new Event('change');
element.dispatchEvent(event);
This will trigger event listeners regardless ...
argparse store false if unspecified
...t value of False.
Likewise, store_false will default to True when the command-line argument is not present.
The source for this behavior is succinct and clear: http://hg.python.org/cpython/file/2.7/Lib/argparse.py#l861
The argparse docs aren't clear on the subject, so I'll update them now: http:...
Is this object-lifetime-extending-closure a C# compiler bug?
...ttention. I'll look into it. It is possible that it has already been found and fixed.
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Android 1.6: “android.view.WindowManager$BadTokenException: Unable to add window — token null is not
...he annoying part is the getApplicationContext() is verbatim from developer.android.com :(
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What is P99 latency?
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Imagine that you are collecting performance data of your service and the below table is the collection of results (the latency values are fictional to illustrate the idea).
Latency Number of requests
1s 5
2s 5
3s 10
4s 40
5s 20
6s 15
7s ...
How to specify font attributes for all elements on an html web page?
... When the browser sees the '*' it loops over all HTML elements in the page and apply the CSS to them. Even for elements where the rule doesn't make any sense. Depending on the size of the HTML this can slow the page rendering.
– Cesar Canassa
Oct 16 '10 at 7:37...
Two statements next to curly brace in an equation
How can I write an equation with one curly brace ( { ), and on the right-hand side next to the curly, two statements in two different lines?
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Check if element is visible in DOM
...ion isHidden(el) {
return (el.offsetParent === null)
}
On the other hand, if you do have position fixed elements that might get caught in this search, you will sadly (and slowly) have to use window.getComputedStyle(). The function in that case might be:
// Where el is the DOM element you'd l...