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Remove all child elements of a DOM node in JavaScript
.../button>
Option 2 A: Looping to remove every lastChild:
An earlier edit to this answer used firstChild, but this is updated to use lastChild as in computer-science, in general, it's significantly faster to remove the last element of a collection than it is to remove the first element (de...
Difference between core and processor
...Us. For optimization purposes, a core can also hold on-core caches with copies of frequently used memory chunks.
A CPU may have one or more cores to perform tasks at a given time. These tasks are usually software processes and threads that the OS schedules. Note that the OS may have many threads t...
Detecting input change in jQuery?
...he input event. This event will fire when the user is typing into a text field, pasting, undoing, basically anytime the value changed from one value to another.
In jQuery do that like this
$('#someInput').bind('input', function() {
$(this).val() // get the current value of the input field.
}...
How do I count a JavaScript object's attributes? [duplicate]
...key1": "value1", "key2": "value2", "key3": "value3"};
Object.prototype.foobie = 'bletch'; // add property to foo that won't be counted
var count = 0;
for (var k in foo) {
if (foo.hasOwnProperty(k)) {
++count;
}
}
alert("Found " + count + " properties specific to foo");
The second l...
foreach with index [duplicate]
...s extension method around for this:
public static void Each<T>(this IEnumerable<T> ie, Action<T, int> action)
{
var i = 0;
foreach (var e in ie) action(e, i++);
}
And use it like so:
var strings = new List<string>();
strings.Each((str, n) =>
{
// hooray
});...
HTML / CSS How to add image icon to input type=“button”?
...g-<left|right>: <width of image>px;
It's usually a little easier to use a button with an img inside:
<button type="submit"><img> Text</button>
However the browser implementations of button for submitting are inconsistent, as well as the fact that all button values ...
Hide text using css
... It still shows the text very small in a more browsers than just IE7, this is not a complete cross browser solution.
– macguru2000
Oct 25 '12 at 23:47
8
...
Align labels in form next to input
...oly grail of such layouts, where no column or content widths must be specified, and everything fits perfectly into the available space, automatically.
– jeff-h
Nov 29 '19 at 7:26
...
anchor jumping by using javascript
...d set the scroll position to it. But this is so complicated.
Here is a lazier way to do that:
function jump(h){
var url = location.href; //Save down the URL without hash.
location.href = "#"+h; //Go to the target element.
history.replaceState(null,null,url...
How do I escape ampersands in batch files?
...not need to be escaped
An example:
start http://www.google.com/search?client=opera^&rls=en^&q=escape+ampersand%20and%20percentage+in+cmd^&sourceid=opera^&ie=utf-8^&oe=utf-8
From a batch file
& is escaped like this: ^& (based on @Wael Dalloul's answer)
% is escaped ...