Answers for "javascript onclick function submit form"

html submit form onclick

var form = document.getElementById("form-id");

document.getElementById("your-id").addEventListener("click", function () {
  form.submit();
});

input type on click submit buttom show

<button type="button" onclick="my_button_click_handler">Click this button</button>
<script>
function my_button_click_handler()
{
alert('Button Clcked');
}
</script>