Some silly jquery example

Long ago,  I needed to grab a text field value when the mouse is click on a button. Here you go:

<input type="text" value="hello value" id="hello" />
<input type="button" value="world value" id="world" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script>
$("#world").click(function() {
 var value_grabed = $("#hello").val();
 alert( value_grabed );
})
</script>