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Animate scroll to ID on page load
Im tring to animate the scroll to a particular ID on page load. I have done lots of research and came across this:
6 Answer...
Why would one use nested classes in C++?
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Nested classes are cool for hiding implementation details.
List:
class List
{
public:
List(): head(nullptr), tail(nullptr) {}
private:
class Node
{
public:
int data;
No...
How to validate an OAuth 2.0 access token for a resource server?
...protected resource with an OAuth 2.0 access token, how does this server validate the token? The OAuth 2.0 refresh token protocol?
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Show an image preview before upload
...bute of an image tag to a data URL:
The html code:
<input type="file" id="files" />
<img id="image" />
The JavaScript code:
document.getElementById("files").onchange = function () {
var reader = new FileReader();
reader.onload = function (e) {
// get loaded data and...
JavaScript validation for empty input field
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<script type="text/javascript">
function validateForm() {
var a = document.forms["Form"]["answer_a"].value;
var b = document.forms["Form"]["answer_b"].value;
var c = document.forms["Form"]["answer_c"].value;
var d = document.forms["Form"]["answer_d"...
SQLite UPSERT / UPDATE OR INSERT
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Why can't I use this on android? I tried db.execSQL("insert into bla(id,name) values (?,?) on conflict(id) do update set name=?"). Gives me a syntax error on the word "on"
– Bastian Voigt
Nov 23 '18 at 6:25
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Is there a way to access the “previous row” value in a SELECT statement?
...rder rows such that each one is distinct:
select rank() OVER (ORDER BY id) as 'Rank', value into temp1 from t
select t1.value - t2.value from temp1 t1, temp1 t2
where t1.Rank = t2.Rank - 1
drop table temp1
If you need to break ties, you can add as many columns as necessary to the ORDER BY.
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Set the selected index of a Dropdown using jQuery
...t selector is pretty slow. It will scan every DOM element looking for the ids. It will be less of a performance hit if you can assign a class to the element.
$(".myselect")
To answer your question though, there are a few ways to change the select elements value in jQuery
// sets selected index...
Proper way to return JSON using node or Express
...": "sqswqswqs",
"timestamp": "2019-11-29T12:46:21.633Z",
"_id": "5de1131d8f7be5395080f7b9",
"name": "topics test xqxq",
"thumbnail": "waterfall-or-agile-inforgraphics-thumbnail-1575031579309.jpg",
"category_id": "5de0fe0b4f76c22ebce2b70a",
"__v": 0
...
Postgres NOT in array
...sing Postgres' native array type, and trying to find the records where the ID is not in the array recipient IDs.
7 Answers...