booker | Book-reader Demo App | Learning library

I have a text input field, where I want to display 2 error messages on eventListener "input", (as the user types).

1. Display "Please enter a first name", if the field has not been completed.
2. Only display "Please enter a valid first name", if the field has been completed/when the user is typing, but includes numbers, (when it shouldn't).

I've kind of got this half working.

And the problem I have, is that my validation isn't working properly.

If I enter valid text, my second error message appears. If I remove the valid text, both error messages appear.

I think the first error message is working fine.

I just only want the second error message to appear as the user types, (not when they have removed the text).

What's the best way to achieve this?

Thanks!

What's the best way to format logic like this, (using JavaScript only, not jQuery).

I am trying to use Beautiful Soup to scrape the first 3 Columns from a table in this Wikipedia Page.

I implemented the solution found here.

I am creating a project similar to a house booking system, with a few particularities (you publish the house but you can rent the rooms individually, and you can set when you are on holidays and the house is not available) in Django (rest-framework, so only API for now). The house model can be simplified to:

I am working on a new Python script to parse XML out and am having troubles navigating to the right index. The script gets data from a .csv and converts the XML per row into a string, and I need to extract from that string. All the code I have tried comes up empty. There are only 4 pieces of information I need (marked by ****). Under 'Hotel Reservation ID' I am trying to grab ResID_Value and ResID_Source for both entries. Under 'TimeSpan' I am trying to get both 'Start' and 'End' but am having no luck. I have tried using indexes and navigating using root/OTA_HotelResModifyRQ/HotelResModifies/HotelResModify. Here is the XML:

I have two relational tables, and I would like to filter data using IF condition. The problem is that using LEFT JOIN I got records that cannot be grouped.

The tables that I have are:

calendar

bookers

The first table consists of lessons that can be booked by more people, and the second table contains data who booked each lesson. The IF condition that I would like to implement is: return '2' if lesson is booked by specific user, return '1' if lesson is booked, but by another user, and return '0' if lesson is not booked.

What I would like to get according to above tables is given in the figure below.

Expected result

But, when I use LEFT JOIN to link those tables, I got record for every user that booked specific lesson.

I am pretty new to Regex. I have transcript data that look something like:

I am looking to implement some list comprehension using both a for loop and an if statement with an elif statement.

Some background: I am importing data from sports-ref regarding basketball players. I wanted to create a list of all players that average at least 20 points per game this year, but I only want one instance of each player. For example James Harden has averaged more 20 or more points for multiple teams this season, and BBALLREF has a separate entry in his table for each team, and an additional one for the total from both teams. For my purposes I only need the total and am not interested in the data broken down by team. I have implemented list comprehension to compose the list of only 20 point scorers, but not such that it removes multiple instances of the same player and leaves only the total for said player.

Here is the code that reproduces the appropriate pandas dataframe:

this is my code

I'm trying to add a class to a select tag so a drop down menu can inherit some css styling but I can't get the style to apply. Am I formatting the class incorrectly?

Here's my code: