What will be logged to the console? var a = ['dog', 'cat', 'hen'];a[100] = 'fox';console.log(a.length);

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What will be logged to the console? <pre><code>var a = ['dog', 'cat', 'hen'];a[100] = 'fox';console.log(a.length);</code></pre> - 面试真题

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What will be logged to the console? <pre><code>var a = ['dog', 'cat', 'hen'];a[100] = 'fox';console.log(a.length);</code></pre>

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What will be logged to the console? <pre><code>var a = [&#x27;dog&#x27;, &#x27;cat&#x27;, &#x27;hen&#x27;];a[100] = &#x27;fox&#x27;;console.log(a.length);</code></pre>

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What will be logged to the console? <pre><code>var a = ['dog', 'cat', 'hen'];a[100] = 'fox';console.log(a.length);</code></pre>