How to automotacially change button status if file selected or textarea contains letters instead for button click?

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What I want to achieve is, when I enter a letter in the textarea or selecting an image with type='file' tag, then the button functionality or text should change automatically.

My problem is that, the change only will take action when I click on the button instead automatically.

What I have tried:

JSFiddle

Posted 20-Feb-19 0:42am

Galarist_00

Updated 20-Feb-19 0:54am

v3

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F-ES Sitecore · Accepted Answer · 2019-02-20T00:55:00

You're only running your check code on the submit click, you need to run it for other events you're interested in such as the textarea or file changing

$('#form').submit(function() {
	return validate();
});

$('#txtarea').keyup(function(){validate();});
$('#file').change(function(){validate();});

function validate()
{
  if ($.trim($("#txtarea").val()) !== "" || $.trim($("#file").val()) !== "") {
    $("#submit").html('proceed');
    return true;
  } else {
    //alert('something wrong');
    $("#submit").html('Not proceed');
    return false;
  }
}