19771 questions
id.length==0 || id==If you check id.length==0 || id== in javascript like this, right?But doesn't both right and left mean the same thing?If lngth is 0, of course nothing has been entered, so I think i...
# index.html<!DOCTYPE html><html lang=en><head> <meta charset=UTF-8> <title>Title</title></head><body><form action={%url 'index'%} method=POST> {%...
If you try to start the runserver in this state, an error will occur.If there is a solution, please take care of it.error messages:AttributeError: module 'bootstrap_datepicker_plus' has no attribute '...
/* * Iterator Example * Example of deleting data called days, months, and days in a list * There are hasnext, next, and remove in the literator. There's a method that does those functions. */pac...
An error occurred when sklearn tried to fit the decision tree algorithm by separating the training data from the test data.I don't know how to solve it, so please point it out if you like.import numpy...
What are the principles of media converters such as psd and pdf being PNG conversion, and mov being mp4 in videos?I often find free converters full of advertisements online, but I wonder if they are t...
It is as the title suggests.When an element that gives a pointerdown event disappears after the event fires, even if the focus() method forces other elements to focus, it will fall out.This does not h...
Generic class inheritance doesn't work out as expected.The implementation itself has been completed, but I am looking for a way to simplify the code.When I searched, I couldn't translate the method I ...
I make Othello with javascript.When the user clicks the p-tag, the location of the clicked board is passed to run().I prepared NPCs that players type randomly after typing, but I wanted to visually pa...
Please forgive me if there are some things that may not be achieved because I am a beginner.If you print, you will see two lists as follows: print(list1)[['A', 'B', 'C', ['B', 'C', ['C', 'D']]]print(l...
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