JSFiddle - React, Tailwind, and code Playground

HTML

<body id="pageApiary">
<div id="topPanel">
	<span id="submit" class="topBtn">
        <img src="http://fpierrat.fr/bee/pic/ico_save_grey.png" />
    </span>
</div>
<div id="container" class="withTopPanel">
	<div id="editDiv">
		<form id="editForm" >
			<label>a: </label>
            <input type="text" name="a" value="a" /><br />
			<label>b: </label>
            <input type="text" name="address" value="b" /><br />
            <textarea name="comment">comment</textarea>
		</form>
	</div>
</div><!-- #container -->
</body>

JavaScript

function formSubmit() {
	console.log('submit');
	//ajaxPostForm("editForm", postCallback);
}

function setSaveIcon() {
	console.log('change');
	$('#submit').html("<img src='http://fpierrat.fr/bee/pic/ico_save.png' />");
}
$(document).ready( function(){
    $('input').change( setSaveIcon );
    $('#submit').click( formSubmit );
});