大约有 30,000 项符合查询结果（耗时：0.0274秒） [XML]
Regular Expression for alphanumeric and underscores
...ppreciate the readability of the full POSIX character class names ( http://www.zytrax.com/tech/web/regex.htm#special ), so I'd say:
^[[:alnum:]_]+$
However, while the documentation at the above links states that \w will "Match any character in the range 0 - 9, A - Z and a - z (equivalent of POSI...
How to get a DOM Element from a JQuery Selector
...UPDATE: Based on a comment:
Here is a post with a nice explanation: http://www.mail-archive.com/jquery-en@googlegroups.com/msg04461.html
$(this).attr("checked") ? $(this).val() : 0
This will return the value if it's checked, or 0 if it's not.
$(this).val() is just reaching into the dom and getti...
How to implement a many-to-many relationship in PostgreSQL?
...ables using serial primary key columns
Auto increment table column
https://www.2ndquadrant.com/en/blog/postgresql-10-identity-columns/
I highly recommend that, because the name of a product is hardly unique (not a good "natural key"). Also, enforcing uniqueness and referencing the column in foreign...
How to send a JSON object using html form data
...th XMLHttpRequest
You'd probably be better off sticking to application/x-www-form-urlencoded data and processing that on the server instead of JSON. Your form doesn't have any complicated hierarchy that would benefit from a JSON data structure.
Update in response to major rewrite of the questi...
SVN+SSH, not having to do ssh-add every time? (Mac OS)
...-add nor enter your passphrase again.
Answer taken from this site:
http://www-uxsup.csx.cam.ac.uk/~aia21/osx/leopard-ssh.html
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gunicorn autoreload on source change
...to sudoers. Allow it to run sudo supervisorctl without password. https://www.cyberciti.biz/faq/linux-unix-running-sudo-command-without-a-password/
From my local / development server, I set up git remote that allows me to push to the production server
git remote add production ssh://user_name@pro...
How to display PDF file in HTML?
...y for chrome browser « Chrome PDF viewer using plugin. pluginspage=http://www.adobe.com/products/acrobat/readstep2.html.
<embed type="application/pdf"
src="http://www.oracle.com/events/global/en/java-outreach/resources/java-a-beginners-guide-1720064.pdf"
width="100%" height="500" alt="pdf" p...
Can I arrange repositories into folders on Github?
...b) with your project structure (like https://mvnrepository.com/ or https://www.npmjs.com/).
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Setting Django up to use MySQL
...
As all said above, you can easily install xampp first from https://www.apachefriends.org/download.html
Then follow the instructions as:
Install and run xampp from http://www.unixmen.com/install-xampp-stack-ubuntu-14-04/, then start Apache Web Server and MySQL Database from the GUI.
You can...
The character encoding of the HTML document was not declared
...file:
<!DOCTYPE html PUBLIC"-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>insert page</title>...