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jquery change class name
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You can set the class (regardless of what it was) by using .attr(), like this:
$("#td_id").attr('class', 'newClass');
If you want to add a class, use .addclass() instead, like this:
$("#td_id").addClass('newClass');
Or a short way to swap classes using .toggleClass():
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Delete a single record from Entity Framework?
... not necessary to query the object first, you can attach it to the context by its id.
Like this:
var employer = new Employ { Id = 1 };
ctx.Employ.Attach(employer);
ctx.Employ.Remove(employer);
ctx.SaveChanges();
Alternatively, you can set the attached entry's state to deleted :
var employer = ne...
Javascript Shorthand for getElementById
Is there any shorthand for the JavaScript document.getElementById? Or is there any way I can define one? It gets repetitive retyping that over and over .
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jQuery: select all elements of a given class, except for a particular Id
...jquery_ref_selectors.asp for more information on jQuery selectors.
Ignore by Exact ID:
$(".thisClass").not('[id="thisId"]').doAction();
Ignore ID's that contains the word "Id"
$(".thisClass").not('[id*="Id"]').doAction();
Ignore ID's that start with "my"
$(".thisClass").not('[id^="my"]').do...
SQLAlchemy: cascade delete
...ss, you can do so, but you will have to define the cascade on the backref (by creating the backref explicitly), like this:
parent = relationship(Parent, backref=backref("children", cascade="all,delete"))
(implying from sqlalchemy.orm import backref)
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Is it possible to GROUP BY multiple columns using MySQL?
Is it possible to GROUP BY more than one column in a MySQL SELECT query? For example:
7 Answers
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How do I link to part of a page? (hash?)
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On 12 March 2020, a draft has been added by WICG for Text Fragments, and now you can link to text on a page as if you were searching for it by adding the following to the hash
#:~:text=<Text To Link to>
Working example on Chrome Version 81.0.4044.138:
Click...
How do servlets work? Instantiation, sessions, shared variables and multithreading
... ServletConfig. Those servlets are initialized in the same order specified by that value (1 is 1st, 2 is 2nd, etc). If the same value is specified for more than one servlet, then each of those servlets is loaded in the same order as they appear in the web.xml, web-fragment.xml, or @WebServlet classl...
Pandas percentage of total with groupby
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Paul H's answer is right that you will have to make a second groupby object, but you can calculate the percentage in a simpler way -- just groupby the state_office and divide the sales column by its sum. Copying the beginning of Paul H's answer:
# From Paul H
import numpy as np
import pand...
What is the best way to auto-generate INSERT statements for a SQL Server table?
...nd while testing, we will need a bunch of dummy data. I've added that data by using MS Access to dump excel files into the relevant tables.
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