title: Updating existing object values using best way
body: <p>I want to update my object values with some predefined value like 5.</p>
  
  <p>Here is my object,</p>
  
  <pre><code>let data = {"a":1,"b":2,"c":3,"d":5}
  </code></pre>
  
  <p>Expected Output;</p>
  
  <pre><code>let data = {"a":5,"b":10,"c":15,"d":25}
  </code></pre>
  
  <p>Here is my attempt:</p>
  
  <pre><code>Object.keys(data).map(key =&gt; data[key] *= 5 )
  </code></pre>