Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <pre><code>return filename.split('.').pop(); </code></pre> <p>Keep it simple :) </p> <p><strong>Edit:</strong></p> <p>This is another non-regex solution that I believe is more efficient:</p> <pre><code>return filename.substring(filename.lastIndexOf('.')+1, filename.length) || filename; </code></pre> <p>There are some corner cases that are better handled by <a href="https://stackoverflow.com/a/12900504/1249581">VisioN's answer</a> below, particularly files with no extension (<code>.htaccess</code> etc included).</p> <p>It's very performant, and handles corner cases in an arguably better way by returning <code>""</code> instead of the full string when there's no dot or no string before the dot. It's a very well crafted solution, albeit tough to read. Stick it in your helpers lib and just use it.</p> <p><strong>Old Edit:</strong></p> <p>A safer implementation if you're going to run into files with no extension, or hidden files with no extension (see VisioN's comment to Tom's answer above) would be something along these lines</p> <pre><code>var a = filename.split("."); if( a.length === 1 || ( a[0] === "" &amp;&amp; a.length === 2 ) ) { return ""; } return a.pop(); // feel free to tack .toLowerCase() here if you want </code></pre> <p>If <code>a.length</code> is one, it's a visible file with no extension ie. <em>file</em></p> <p>If <code>a[0] === ""</code> and <code>a.length === 2</code> it's a hidden file with no extension ie. <em>.htaccess</em></p> <p>Hope this helps to clear up issues with the slightly more complex cases. In terms of performance, I believe this solution is <a href="https://stackoverflow.com/a/12900504/1249581">a little slower than regex</a> in most browsers. However, for most common purposes this code should be perfectly usable.</p>
    singulars
    1. This table or related slice is empty.
    1. POHow can I get file extensions with JavaScript?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USVisioN
    1. USwallacer
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI can't comment on the performance, but this one certainly looks clean! I'm using it. +1
      singulars
      1. PO
      1. USpc1oad1etter
    2. CObut in this case the file name looks like filname.tes.test.jpg. Kindly consider the output. I hope it will be false.
      singulars
      1. PO
      1. USFero
    3. COin that case the output is "jpg"
      singulars
      1. PO
      1. USwallacer
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload