Test only JQuery
by kwabs Ohh
HTML
<select id="sel">
<option value="0"> Value 0</option>
<option value="1"> Value 1</option>
<option value="2"> Value 2</option>
</select>
<button>
Click
</button>JavaScript
var prevVal, currVal;
$('#sel').on("focus",function(){
prevVal = $ (this).val();
})
$('button').on("click",function(){
})
$('#sel').on("change",function(){
currVal = $(this).val();
console.log("Previous Value: " +prevVal + " Current Value: " + currVal);
prevVal =currVal;
})