JQuery Click Event

JQuery Click Event

HTML

<button id="btnSave">Save Click</button>
<input type="text" id="txt">

JavaScript

$(document).ready(function () {

        $("#btnSave").click(
            function () {
                AlertSave();
            }            
        );
    });

function AlertSave() {
	 if($('#txt').val() == '0'){
      alert('should not be 0')
    }
}