change color of input if submit clicked and input is empty code example

Example: change color of input if submit clicked and input is empty

HTML :
Text <input type="text">
<button>Click Me</button>
--------------------------
JQuery :
$("button").on("click",function(){
    if($("[type='text']").val() == null){
        $(this).css("border","2px solid red");
    } 
});