on enter key javascript code example

Example 1: hit enter button lick in js

<form>
    <input id="myInput" placeholder="Some text.." value="">
    <input type="submit" id="myBtn" value="Submit">
</form>

<script>
var input = document.getElementById("myInput");
input.addEventListener("keyup", function(event) {
    if (event.keyCode === 13) {
        event.preventDefault();
        document.getElementById("myBtn").click();
    }
});
</script>

Example 2: html button press enter off

Explicit Prevention:

<form>
    <label for="name">Name:</label>
  	//Not able to press `Enter`
    <input type="text" name="name" onkeypress="ExplicitPrevention(event)">
  	//Able to press `Enter`
    <input type="submit" value="Submit">
</form>

<script>
    const ExplicitPrevention = function (event) {
      	var keyPressed = event.keyCode || event.which;
      	if (keyPressed === 13) {
          	alert("Test: You pressed the Enter key!!");
        	event.preventDefault();
      	}
    }
</script>

//Also check: https://www.tjvantoll.com/2013/01/01/enter-should-submit-forms-stop-messing-with-that/
//and: https://www.geeksforgeeks.org/how-to-disable-form-submit-on-enter-button-using-jquery/