title: How to test svelte input attribute agains multiple options
body: <p>i have store value and two sets of data:</p>
  <pre><code>$selectedColor
  
  const productColor = {
     options: [
        {id:0, title: 'white'},
        {id:1, title: 'black'},
        {id:2, title: 'red'},
        {id:3, title: 'yellow'}
     ],
  }
  
  
  const productType = {
     options: [
        {id:0, title: 'somethings', hiddenInColor: 'white'},
        {id:1, title: 'somethings', hiddenInColor: 'black'},
        {
           id:2, 
           title: 'somethings', 
           hiddenInColor: 
          //here should be black AND white
          //problem is I can't understand how to use nested json with disable attribute (see below) 
        }
     ],
  }
  </code></pre>
  <p>then i have populate  inputs (type: radio) for product type and color</p>
  <pre><code>{#each productType.options as option (option.id)}
              {#if activeTab !== option.hiddenIn}
                  &lt;li&gt;
                      &lt;label&gt;
                          &lt;input type=&quot;radio&quot; name=&quot;name&quot; 
                              value={option.id} 
                              on:change={() =&gt; optionHasChanged(option.name, somethings)}
                              disabled={option.hiddenInColor == $selectedColor}
                              bind:group={defaultProductType}&gt;
                          {option.title}
                      &lt;/label&gt;
                  &lt;/li&gt;
              {/if}
          {/each}
  </code></pre>
  <p>I was trying to -&gt; disable input IF $selectedColor == hiddenInColor</p>
  <p>i did it like this -&gt;</p>
  <pre><code>disabled={option.hiddenInColor == $selectedColor}
  </code></pre>
  <p>and it works well. But... only when you testing it against 1 value</p>
  <p>i cant understand how to check more then 1 color at once.
  So basically, using my const productType -&gt;
  i would like to disable id:3 if $selectedColor == 'black' || 'white'</p>
  <p>any advices? Or maybe there is more compact solution to this? Thanks</p>