title: Return true if there is a place to split the array so that the sum of the numbers on one side is equal to the sum of the numbers on the other side
body: <blockquote>
  <p>Given an array of numbers return true if there is a place to split the array so that the sum of the numbers on one side is equal to the sum of the numbers on the other side.</p>
  </blockquote>
  <p>Here's as far as I got. Please help:</p>
  <pre><code>function splitSum(arr) {
      if(arr.length % 2 === 0) {
          if ()
      }
  }
  </code></pre>