IndexOf in a function
<p>How can I return the index position of <code>"needle"</code> in this array? </p>

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<pre class="snippet-code-js lang-js prettyprint-override"><code>function findNeedle(haystack) {
  return findNeedle.indexOf('needle');
}

findNeedle(['3', '123124234', undefined, 'needle', 'world', 'hay', 2, '3', true, false]);</code></pre>
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