init input value submit code example

Example 1: intput field submit button

<label for="fname">First name:</label><br>
  <input type="text" id="fname" name="fname"><br>

Example 2: add submit to input

<!-- put this line of code inside of your input -->
 onchange="this.form.submit()

<!-- EXAMPLE -->

      <input type="checkbox" onchange="this.form.submit()">