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Show an image preview before upload
...oad the files. Part of the File API is the FileReader interface which lets web applications asynchronously read the contents of files .
Here's a quick example that makes use of the FileReader class to read an image as DataURL and renders a thumbnail by setting the src attribute of an image tag to a...
Getters \ setters for dummies
...r__() is another option. It's deprecated, but still widely used around the web and thus unlikely to disappear anytime soon. It works on all browsers except IE 10 and below. Though the other options also work well on non-IE, so this one isn't that useful.
var foo = { _bar : 123; }
foo.__defineGetter...
Javascript reduce on array of objects
...n check out the documentation at:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce
Hope this helps!
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Using an RDBMS as event sourcing storage
...g Young recommends a similar approach, as extensively documented on Greg's website.
The schema of his prototypical "Events" table reads:
Table Events
AggregateId [Guid],
Data [Blob],
SequenceNumber [Long],
Version [Int]
...
Send attachments with PHP Mail()?
...:newInstance()
->setSubject('Your subject')
->setFrom(array('webmaster@mysite.com' => 'Web Master'))
->setTo(array('receiver@example.com'))
->setBody('Here is the message itself')
->attach(Swift_Attachment::fromPath('myPDF.pdf'));
//send the message
$...
Remove .php extension with .htaccess
...or causing issues:
Trailing Slash Problem
Description:
Every webmaster can sing a song about the problem of the trailing
slash on URLs referencing directories. If they are missing, the server
dumps an error, because if you say /~quux/foo instead of /~quux/foo/
then the server sea...
list every font a user's browser can display
... font in a browser using JavaScript and CSS.
*
* Author : Lalit Patel
* Website: http://www.lalit.org/lab/javascript-css-font-detect/
* License: Apache Software License 2.0
* http://www.apache.org/licenses/LICENSE-2.0
* Version: 0.15 (21 Sep 2009)
* Changed comparision font ...
Log4Net, how to add a custom field to my logging
... You should be very careful when using the ThreadContext in a Web Application though since these tend to jump threads and the ThreadContext will not be moved along with it.
– Robba
Jan 26 '16 at 8:59
...
JavaScript dependency management: npm vs. bower vs. volo [closed]
... the same trend.
In my opinion, since there are tools like browserify and webmake out there, that help use node modules in the browser, there is not anymore a real need for bower or volo, unless they offer something else for you (a particular module existing only in their registries).
Both Volo an...
JOIN queries vs multiple queries
... otherwise if selecting a page of rows (like 20 or 50) as if for a typical web view grid, and comparing single LEFT JOIN to two queries - selecting 2 or 3 identifiers with some WHERE criteria and then running the other SELECT query with IN().
– JustAMartin
Sep ...