This question already has answers here:
Getting an empty JQuery object
(4 answers)
Closed 8 years ago.
Is there an elegant way to create an empty jquery element (versus null) ?
$myEmptyElement = $("#ThisIdDoesNotExist234343");
The rational is not checking later on for null.
Later we do :
$myEmptyElement.destroy();
Sure:
var $emptyElement = $();
Why would you want one, though?
A simple example would be:
var $emptyElement = $();
One way:
var $emptyElement = new $;
Related
This question already has answers here:
Select multiple jQuery objects with .add()
(3 answers)
Closed 5 years ago.
Here is my code:
var $btnNone = $('#btn-none');
var $btn1234 = $('#btn-1, #btn-2, #btn-3, #btn-4');
// This selector works fine
var $btnReview1234None = $('#btn-1, #btn-2, #btn-3, #btn-4, #btn-none')
// HOW TO MAKE THIS SELECTOR WORK.
// This selector ignores $btnNone but respects $btn1234.
// This listens only first item in the selector
var $btnReview1234None = $($btn1234, $btnNone);
$btn1234None.click(function(){
alert('Lorem')
});
The issue is because $($btn1234, $btnNone) will be treated as a contextual selector, ie. jQuery will search the DOM to find the $btn1234 element within $btnNone.
To fix this you could provide an array of both elements to the selector:
var $btnReview1234None = $([$btn1234, $btnNone]);
Or you could use add():
var $btnReview1234None = $btn1234.add($btnNone);
This question already has answers here:
How can I get query string values in JavaScript?
(73 answers)
Closed 7 years ago.
I want to pass one value through ajax by taking the values from jQuery. But I am using link so I have problems taking the value. I tried the following,
<a id="addpa" class="ActionPopup" href="http://localhost:49951/admin/assignhome/Add?sPId=7">Add</a>
Jquery Code:
var spId = $("#addpa").prop("href"); // Here i am getting a whole Url
var thequerystring = getParameterByName("sPId");
The result is showing undefined. How to take the value of sPId? Give me ideas..
How to take the value of sPId?
Try using String.prototype.split() , Array.prototype.pop()
var spId = $("#addpa").prop("href").split(/=/).pop();
This question already has answers here:
Swap value of two properties on object(s)
(3 answers)
Closed 8 years ago.
I have the following JSON. I need to swap SortId
Like I have this,
[{"CategoryId":1,"Name":"Worktable","SortId":1}
,{"CategoryId":2,"Name":"Bf ","SortId":2}]
After swaping their 'SortId' I need
[{"CategoryId":1,"Name":"Worktable","SortId":2}
,{"CategoryId":2,"Name":"Bf ","SortId":1}]
Please tell me how to do it through JavaScript.
var tmp = a[0].SortId;
a[0].SortId = a[1].SortId;
a[1].SortId = tmp;
jsFiddle
This question already has answers here:
Get array of text values using selector instead of iterating?
(7 answers)
Closed 9 years ago.
I have html with multiple things classed .text. I the perform
console.log($(whatever).find('.foo').text());
The result is a textstring with all the contents in it. Can I save it to an array instead somehow?
You can use the map method to get this done
var textArray = $(whatever).find('.foo').map(function() {
return $(this).text();
}).get();
This will get you an array.. If you want to display it as a string then just use join along with it.
Check Fiddle
var arr = [];
$(whatever).find('.foo').each(function() {
arr.push($(this).text());
});
This question already has answers here:
JavaScript DOM remove element
(4 answers)
Closed 8 years ago.
Ok I've been so spoiled with Jquery that I don't even know how to remove an element anymore with plain Javascript.
So I have this which I would like to remove with Javascript.
Any help appreciated.
Try this
function RemoveElement(elemID) {
var elem = document.getElementById(elemID);
if (elem.parentNode) {
elem.parentNode.removeChild(elem);
}
}
Node.removeChild is the method, see documentation here: https://developer.mozilla.org/En/DOM/Node.removeChild
Example:
var parent = document.getElementById("mydiv");
var child = document.getElementById("other");
parent.removeChild(child);
like:
container.removeChild(child);