Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>The different behavior between what happens to <code>list</code> and <code>index</code> is explained well with these two answers:</p> <ul> <li><a href="https://stackoverflow.com/a/1534286/29995">The difference between simply reading and actually setting an object property</a></li> <li><a href="https://stackoverflow.com/a/261948/29995">How incrementing (++) is actually an assignment behind the scenes</a></li> </ul> <p>To summarize them:</p> <ul> <li><code>list</code> and <code>index</code> both exist on <code>MyView</code>'s prototype.</li> <li>After creating your <code>new MyView()</code>, <code>initialize()</code> operates in the context of the newly created instance (i.e. not the prototype).</li> <li>When you <code>push()</code> something onto <code>list</code>, you're pushing it onto the list object that's <strong>referenced</strong> by the prototype. You're not updating the reference to the list at all, just reading it.</li> <li>When you <code>index++</code>, this actually does an <strong>assignment</strong> (<code>this.index = this.index + 1</code>) behind the scenes. When you assign something to an object, it doesn't matter whether or not it exists on the prototype - you are <strong>assigning it to that particular instance</strong>. The prototype does not change.</li> </ul> <hr/> <p>For the behavior you're expecting, just set both properties in your <code>initialize</code> function:</p> <pre><code>window.MyView = Backbone.View.extend({ initialize: function () { this.index = 0; this.list = []; this.index++; this.list.push(this.index); } }); </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POUnexpected constructor / extend behavior in BackboneJS
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. USRob Hruska
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POUnexpected constructor / extend behavior in BackboneJS
      singulars
      1. PTQuestion
    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. COThat works very good. But then why (int)"index" variable acts like a object variable? It does not persist the value. While (array)"list" variable acts like a static one? What I suppose is that they both persist the value and the last return should be: this.index=1; this.list=[1];
      singulars
      1. PO
      1. USVilius Paulauskas
    2. CO@ViliusPau - Check out [this answer](http://stackoverflow.com/a/1534286/29995) - it's an *excellent* explanation.
      singulars
      1. PO
      1. USRob Hruska
 

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