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Find by key deep in a nested array

Let's say I have an object: [ { 'title': "some title" 'channel_id':'123we' 'options': [ { 'channel_id':'abc'

2026-01-04 07:01:20Ask
JavaScript
How to center a button within a div?

I have a div that's width is 100%. I'd like to center a button within it, how might I do this? hello

2025-12-06 08:22:13Ask
CSS
Explore the functionality of the "next" function in Express middleware and its role in redirecting to another function.

I'm new to Nodejs and working on Expressjs and now I'm working on "middleware functions" for a specific route and I want to know "what does next do", means after verifying what the "next" function can do? If we want to move/redirect to another function then how do we do that? What is "checkAuthentication"? This is my current code constexpress=require('express');constapp=express();//Custo

2024-04-02 21:02:16Ask
JavaScript
Reload FullCalendar V5 event after updating selection options

I'm using FullCalendar with a database that contains event information, besides the normal information in the database I have a column for doctors and another for city, so I'm using MVCphpmysql to work my fullcalendar5. I made a lot of changes to the calendar and it's working. I've added two selections at the top of the calendar, outside the calendar, what I like is that when I change the selection (e.g. select a doctor) the calendar has a refetchEvents() and of course only shows the events from those doctors, when I add When it is left blank, select

2024-03-27 11:51:32Ask
PHP
Using variables within strings for SQL queries using python

I want to see all the data of a specific table of sql database world entered by the user, the code below will give me the required output for the city table, but I want the table name to be entered by the user and want to make my code work for all cases. fromsqlite3importconnectimportmysql.connectormydb=mysql.connector.connect(host="localhost",user="root&quot

2024-03-22 12:35:15Ask
MySQL
Get a pair of records from group by clause

I have some tables from this table and I am getting records using string_agg(a2.sampl_no,',') assampl_nos and groupby clauses are working fine but I want to have at most 4 sample_no aggregates per row. Suppose I get string_aggas(0001,0002,0003,0004,0005,0006) in a row from database but I want this (0001,0002,0003,0004)(0006,0007). Help me solve this

2024-02-04 00:15:13Ask
PHP
PHP - Fatal Error: Uncaught Error: Attempt to assign property on null and warning for reading property

I'm coding in PHP and I'm getting some errors, it's also skipping my else statement <?php//putyourcodehere//$select_query="Select*from`user_table`whereusername='$user_username'";//$result =mysqli_query($con,$select_query);$sql="Select*f

2024-01-06 21:48:58Ask
PHP