input type submit html

1
2 <form action="/action_page.php">
3  <label for="fname">First 
4  name:</label><br>
5  <input type="text" id="fname" name="fname" 
6  value="John"><br>
7  <label for="lname">Last name:</label><br>
8  
9  <input type="text" id="lname" name="lname" value="Doe"><br><br>
10  
11  <input type="submit" value="Submit">
12</form>
13 

1<button type="submit" form="form1" value="Submit">Submit</button>

1<input type="submit">

1<!-- put this line of code inside of your input -->
2 onchange="this.form.submit()
3
4<!-- EXAMPLE -->
5
6      <input type="checkbox" onchange="this.form.submit()">
7