title: How to clear an item value in puppeteer
body: <p>I have an iFrame with several items and i want to update a record.</p>
  
  <pre><code>const frame = await page.frames()[1];
  const P1_CUSTOM_NAME = await frame.$('#P1_CUSTOM_NAME');
  await P1_CUSTOM_NAME.type('MyFavoritCustomer', {delay: 20});
  </code></pre>
  
  <p>This will not overwrite the field <code>P1_CUSTOM_NAME</code>. Unfortunately it appends the value <code>'MyFavoritCustomer'</code>.</p>
  
  <p>Any suggestions how i can clear an item value?</p>