Try
html
<input type="text" id="box" data-clicked="1" value="1 = 0.00 " readonly><br>
<input type="text" id="box1" data-clicked="2" value="2 = 0.00 +" readonly><br>
<input type="text" id="box2" data-clicked="3" value="3 = 0.00 +" readonly><br>
<input type="text" id="box3" data-clicked="4" value="4 = 0.00 +" readonly><br>
<input type="text" id="box4" data-clicked="5" value="5 = 0.00 +" readonly><br>
<input type="text" id="box5" data-clicked="6" value="6 = 0.00 +" readonly><br>
js
$(document).ready(function() {
var slider = $("#slider");
var boxes = $("[data-clicked]");
$(boxes).on("click", function(e) {
$(boxes).removeClass("clicked");
$(e.target).addClass("clicked");
});
$(slider).on("change", $(boxes), function(e) {
$(".clicked")
.val( $(".clicked").data("clicked")+ " = " + $(slider).val() );
});
});