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Determining whether jQuery has not found any element
...t(0) !== undefined
$('#my_selector')[0] !== undefined
This is the basic, now do whatever you want.
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How to handle initializing and rendering subviews in Backbone.js?
...its subviews, and each one of them has different problems. I'm curious to know if there is a better way that solves all of the problems:
...
Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
...
I hear Matlab has lazy evaluation now. If not, we do have the technology to implement them.
– Dmitry
Dec 11 '16 at 21:57
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Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...
...o being compared to true and is thus also considered to be equal to true.
Now, the "WHY?!?!" question is explained by the fact that Javascript has its roots in the C-family of languages. In which any number, other than 0 is considered to be a valid true boolean. :-/
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Get the subdomain from a URL
...".co.uk" and
"pvt.k12.wy.us". The Public Suffix
List is a list of all known public
suffixes.
The Public Suffix List is an
initiative of the Mozilla Foundation.
It is available for use in any
software, but was originally created
to meet the needs of browser
manufacturers. It allo...
How to check if a string contains a substring in Bash
...ash, and, of course Bash:
stringContain() { [ -z "${2##*$1*}" ]; }
Then now:
$ if stringContain 'o "M3' 'echo "My String"';then echo yes;else echo no;fi
no
$ if stringContain 'o "M' 'echo "My String"';then echo yes;else echo no;fi
yes
... Or if the submitted string could be empty, as pointed o...
How to reset radiobuttons in jQuery so that none is checked
...y value. You will see an alert");
}
Note 2: As of jQuery 1.6.0, there are now two similar methods, .attr and .prop that do two related but slightly different things. If in this particular case, the advice provide above works if you use 1.6.1+. The above will not work with 1.6.0, if you are using 1....
Which terminal command to get just IP address and nothing else?
... This is the best answer. ifconfig is deprecated several years now on most os's.
– pozcircuitboy
Jun 19 '19 at 20:39
2
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Random date in C#
...he adviced - put the variable out of the method and put all in class. Plus now the time is random too. Here is the result.
class RandomDateTime
{
DateTime start;
Random gen;
int range;
public RandomDateTime()
{
start = new DateTime(1995, 1, 1);
gen = new Random(...
Get mouse wheel events in jQuery?
...ion() {
var supportOffset = window.pageYOffset !== undefined,
lastKnownPos = 0,
ticking = false,
scrollDir,
currYPos;
function doSomething(scrollPos, scrollDir) {
// Your code goes here...
console.log('scroll pos: ' + scrollPos + ' | scroll dir: ' + scrollDir);
...