How to get an Object by name from Datastructure in javascript : <p>I have the following Datastructur in Javascript</p>

<pre><code>  data: {…}
        0_0: {…}
            file: “xy.jpg”
            height: 256
            width: 256
            &lt;prototype&gt;: Object { … }
        0_256: {…}
            file: "xx.jpg"
            height: 256
            width: 256
        &lt;prototype&gt;: Object { … }
</code></pre>

<p>How can I get the data from "0_256"?</p>
