Databases
StackOverflow2013
Postsdbo
POShould I use if-then-else or and or operator to check for empty values in Javascript
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POShould I use if-then-else or and or operator to check for empty values in Javascript
    primarykey
    data
    text
    <p>Today this question came up for the project I'm working on. The 'problem' is that I have some uncertainties in the data that is provided to me and on top of which I am building my application. This means it could be that some values sometimes are present but sometimes not. Because I want some consistency in my upper layers I wrote some 'sanitize' method that creates the consistency I want.</p> <p>But...what is better?:</p> <pre><code>var myNewData = {}; myNewData['somevalue'] = (myOldData.somevalue) ? myOldData.somevalue : ''; </code></pre> <p>or</p> <pre><code>var myNewData = {}; myNewData['somevalue'] = myOldData.somevalue || ''; </code></pre> <p>And...why is it better? Is it performance? Readability? Just curious.</p> <p>EDIT: To be clear. The 'somevalue' property does not necessarily had to be in the old data. Sometimes it is sometimes it is not.</p> <p>EDIT2: Of course, if I know that the value of my old data contains a non-character value (numeric, boolean, etc.) I will default to it's appropriate value (0, true, etc.).</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USBas Slagter
    1. USBas Slagter
    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. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POShould I use if-then-else or and or operator to check for empty values in Javascript
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

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