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jQuery UI Slider Missing BG

I'm using a range slider with jQuery UI but when I move the slider, the background line does not show up so it's hard to tell where it is at. How do I highlight the background line only for the selected portion?
jsfiddle is below.
https://jsfiddle.net/zbmt5qrn/
/* INTEREST RATE SLIDER */
$("#interestRange").slider({
min: 0,
max: 100,
step: 1,
values: [10],
slide: function(event, ui) {
for (var i = 0; i < ui.values.length; ++i) {
$("input.interestValue[data-index=" + i + "]").val(ui.values[i]);
}
}
});
$("input.interestValue").change(function() {
var $this = $(this);
$("#interestValue").slider("values", $this.data("index"), $this.val());
});
function handleInterestChange(input) {
if (input.value < 0) input.value = 0;
if (input.value > 24) input.value = 24;
}
var items =[ '8%','24%'];
var oneBig = 100 / (items.length - 1);
$.each(items, function(key,value){
var w = oneBig;
if(key === 0 || key === items.length-1)
w = oneBig/2;
$("#interestLabel").append("<label style='width: "+w+"%'>"+value+"</laben>");
});

I am removing the code about '8%/24%' because it does not seem to be relevant to this question.
There are a couple ways to set the background. You could insert a new element inside #interestRange and change its width based on the slider value. But if you do not need to worry about supporting outdated browsers, it would be much easier to use apply a linear-gradient to the background of #interestRange.
const sliderMin = 0
const sliderMax = 100
const sliderDefaultValue = 10
function setSliderBackground(value){
const sliderRange = sliderMax - sliderMin
const sliderPercent = Math.floor(100 * (value / sliderRange))
$("#interestRange").css({
background: `linear-gradient(90deg, #0000ff ${sliderPercent}%, #ffffff ${sliderPercent}%)`
})
}
function setSliderValue(value){
$("#interestRange").slider("value", value);
}
function setInputValue(value){
$("#interestValue").val(value)
}
$(document).ready(()=>{
$("#interestRange").slider({
min: sliderMin,
max: sliderMax,
step: 1,
// Handle when the user moves the slider
slide: (event, ui)=>{
const sliderValue = ui.value
setInputValue(sliderValue)
setSliderBackground(sliderValue)
}
})
// Handle when the user types in a value
$("#interestValue").change(()=>{
const typedValue = $("#interestValue").val()
setSliderValue(typedValue)
setSliderBackground(typedValue)
})
// Stuff to do when the page loads
setSliderValue(sliderDefaultValue)
setInputValue(sliderDefaultValue)
setSliderBackground(sliderDefaultValue)
})
<link href="https://code.jquery.com/ui/1.12.0-rc.2/themes/smoothness/jquery-ui.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.min.js"></script>
<p>Interest Rate:</p>
<div>
<div id="interestRange"></div>
<div id="interestLabel"></div>
</div>
<div>
<input type="number" id="interestValue" />
</div>

Can't set value of JQuery UI Slider

I have 3 Sliders in one JQuery Dialog, i want them to have a maximum value, but the maximum is not only for one slider it is for the sum of all of them. My script runs fine in google chrome debuger the only problem is that the value of the slider is not updated in $(this).slider("value", (sliderMax - sum));
$(".slider").each(function() {
var id = $(this).attr("id");
id = id.replace("Slider", "Value");
var sliderMax = 27;
$(this).slider({
range : "min",
min : 0,
max : sliderMax,
value : $("#" + id).attr("value"),
slide : function(event, ui) {
var sum = 0;
$(".sliderValue").each(function() {
if ($(this).attr("id") != id) {
sum += parseInt($(this).attr("value"));
}
});
if ((sum + $(this).slider("value")) > sliderMax){
$(this).slider("value", (sliderMax - sum));
}
$("#" + id).val(ui.value);
}
});
});
pls help me.

Ok finaly i found the solution:
if ((sum + ui.value) > sliderMax){
return false;
}

It is because of params of parseInt and value:... parseInt returns fake value when the string provided as parameter doesn't contain a number! please define the value variable outside the options as follows
$(".slider").each(function() {
var id = $(this).attr("id");
id = id.replace("Slider", "Value");
var sliderMax = 27;
var _value=$("#" + id).attr("value");
$(this).slider({
range : "min",
min : 0,
max : sliderMax,
value :value,
slide : function(event, ui) {
var sum = 0;
$(".sliderValue").each(function() {
if ($(this).attr("id") != id) {
var valueString=$(this).attr("value");
sum += parseInt(valueString);
}
});
if ((sum + $(this).slider("value")) > sliderMax){
$(this).slider("value", (sliderMax - sum));
}
$("#" + id).val(ui.value);
}
});
});
EDITS:
copied your solution to help readers
if ((sum + ui.value) > sliderMax){
return false;
}

How do i update a label when input box has new value

I am trying to get a label to update when a user enters a value into a text box. I have managed to get the label to update when the slider bar value is changed by the user but i dont have the skill to get it to update when the text box changes.
I tried to write some code but it does not look right at all, can sombody lend me a hand?
Code i tried
$("#MonthlyRent").text({
textchange: function (event, ui) {
update(2, ui.value + '%'); //changed
}
});
Function to catch change
$(document).ready(function () {
$("#slider").slider({
range: "min",
animate: true,
value: 1,
min: 0,
max: 100,
step: 1,
slide: function (event, ui) {
update(1, ui.value + '%'); //changed
}
});
$("#slider2").slider({
range: "min",
animate: true,
value: 1,
min: 0,
max: 100,
step: 1,
slide: function (event, ui) {
update(2, ui.value + '%'); //changed
}
});
$("#MonthlyRent").text({
slide: function (event, ui) {
update(2, ui.value + '%'); //changed
}
});
//Added, set initial value.
$("#amount").val(0);
$("#duration").val(0);
$("#amount-label").text(0);
$("#duration-label").text(0);
$("MonthlyRent").text(0);
update();
});
update function
function update(slider, val) {
//changed. Now, directly take value from ui.value. if not set (initial, will use current value.)
var $amount = slider == 1 ? val : $("#amount").val();
var $duration = slider == 2 ? val : $("#duration").val();
var $rent = $("#MonthlyRent").val();
var $amount2 = $amount.replace('%', '');
/* commented
$amount = $( "#slider" ).slider( "value" );
$duration = $( "#slider2" ).slider( "value" );
*/
$total = "£" + ($amount2 + $rent);
$("#amount").val($amount);
$("#amount-label").text($amount);
$("#duration").val($duration);
$("#duration-label").text($duration);
$("#total").val($total);
$("#total-label").text($total);
$('#slider a').html('<label><span class="glyphicon glyphicon-chevron-left"></span> ' + $amount + ' <span class="glyphicon glyphicon-chevron-right"></span></label>');
$('#slider2 a').html('<label><span class="glyphicon glyphicon-chevron-left"></span> ' + $duration + ' <span class="glyphicon glyphicon-chevron-right"></span></label>');
}

Use the event change or keyup:
$('#mytextinput').on('change keyup', function (e) { /* You stuff here. */ })
Without HTML code, I guessed your input was something like <input type="text" id="mytextinput" />, but if it is not you should give more information.

To detect a change on a textbox use the following
http://jsfiddle.net/SrhYh/
$('#example').change(function() {
update();
});
function update() {
$('#result').text($('#example').val());
}
as an alternative listen to keyup
$('#example').keyup(function() {
update();
});
function update() {
$('#result').text($('#example').val());
}
http://jsfiddle.net/SrhYh/1/

How to trigger change event of slider on button click

I have a jQuery slider. I have two buttons i.e ZoomIn and ZoomOut. I want to slide the slider on these button click. Like by clicking ZoomIn it should slide towards right and by clicking ZoomOut it should slide towards left, and should call their respective slide function/event too.
Working Demo Here
$(document).ready(function () {
$("#zoomSlider").slider({
min: -3.32,
max: 4.00,
step: 0.01,
value: 0.1,
animate: false,
"slide": function (event, ui) {
$("#zoom").val(ui.value + "%");
}
});
$("#zoom").val($("#zoomSlider").slider("value") + "%");
});
Updated
I also need a function to be called when slider changes. That function take two parameters 1)event 2)ui, how to get those parameteters when button click ? like :
$('#zoomIn').on('click', function () {
if (counter < 4.00) {//if counter less than max value
counter += .1;//increment counter
$slider.slider("value", counter)
$("#zoom").val($slider.slider("value") + "%");
myFunction(event, ui);
}
});

Please try this:
$(document).ready(function(){
$("#zoomIn").click(function (){
var current = $( "#zoom" ).val().slice(0,-1);
var new_position = (parseFloat(current)+0.1) ;
$("#zoom").val( new_position +"%");
$("#zoomSlider").slider('value',new_position);
$( "#zoom" ).val( $( "#zoomSlider" ).slider( "value" )+"%" );});
$("#zoomOut").click(function (){
var current = $( "#zoom" ).val().slice(0,-1);
var new_position_out = (parseFloat(current)-0.1) ;
$("#zoom").val( new_position_out +"%");
$("#zoomSlider").slider('value',new_position_out);
$( "#zoom" ).val( $( "#zoomSlider" ).slider( "value" )+"%" );});
});
Demo

Try
$(document).ready(function () {
var counter = 0, //initialize counter
$slider = $("#zoomSlider");
$slider.slider({
min: -3.32,
max: 4.00,
step: 0.01,
value: 0.1,
animate: false,
"slide": function (event, ui) {
$("#zoom").val(ui.value + "%");
counter = ui.value; //change counter value if user slides
}
});
$("#zoom").val($slider.slider("value") + "%");
counter = $slider.slider("value"); // set slider value in counter
$('#zoomIn').on('click', function () {
if (counter < 4.00) { //if counter less than max value
counter += .1; //increment counter
$slider.slider("value", counter)
$("#zoom").val($slider.slider("value") + "%");
}
});
$('#zoomOut').on('click', function () {
if (counter > -3.32) { //if counter greater than min value
counter -= .1; //decrement counter
$slider.slider("value", counter)
$("#zoom").val($slider.slider("value") + "%");
}
});
});
Demo http://jsfiddle.net/rbW35/5/

Example similar to what you want exists in official documentation. Slide event is only for mouse manipulation on slider, use change to capture slider changes. Here is fiddle
$(document).ready(function () {
var slider = $("#zoomSlider"),
counter = $("#zoom");
slider.slider({
min: -3.32,
max: 4.00,
step: 0.01,
value: 0.1,
animate: false,
change: function (event, ui) {
counter.val(ui.value.toFixed(2) + "%");
}
});
counter.val(slider.slider("value").toFixed(2) + "%");
$('[type="button"]').on('click', function (event) {
var el = $(event.currentTarget),
mult = el.data().negative ? 1 : -1;
slider.slider("value", slider.slider("value") + slider.slider("option", "step") * mult);
});
});

jsFiddle Example
We first get the current value of the slider. Then, we set the slider value to the current value minus one.
$('#zoomOut').click(function() {
var current_value = $('#zoomSlider').slider('option','value');
$("#zoomSlider").slider("value", current_value-=1);
});
If you want the have the slider animate as it's changing value, you can change the "animate" parameter to "true" in the creation of the slider.

Jquery ui slider move to the next value

Here's a sample image of what i'm trying to accomplish
Say I click from 150 value the handle should only move to 50 and not jump to 150. I click again it move from 50 to 100.
The other way around, say the handle is on value 150 then i click on value 5, it should not jump directly to 5 it should move from 150 to 100.
How can I do that?
Here's my code:
var valMap = [5, 10, 20, 50, 100, 150];
value = 0;
var slider = $("#slider").slider({
disabled: false,
animate: true,
min: 0,
max: valMap.length - 1,
slide: function (event, ui) {
slider.slider("option", "animate", "slow");
},
change: function () {
var Slideval = $(this).slider('value');
console.log(Slideval, value)
if(value < Slideval) {
console.log("incremented")
} else if(value > Slideval) {
console.log("decremented")
}
value = Slideval;
}
});
Here's a sample jsfiddle: http://jsfiddle.net/endl3ss/jNwww/21/

I don't know the slider too much, but here is a working solution based on your specification:
http://jsfiddle.net/5xMMz/11/
and here is the full code for reference
var valMap = [5, 10, 20, 50, 100, 150,500,1000,5000];
value= 0;
var lastSlideValue = 0;
var internalSlideCalling = false;
var slider = $("#slider").slider({
disabled : false,
animate : true,
min : 0,
max : valMap.length - 1,
slide : function(event, ui) {
slider.slider("option", "animate", "slow");
},
change: function(){
var Slideval = $(this).slider('value');
if (!internalSlideCalling)
{
if (Slideval>lastSlideValue && lastSlideValue < $(this).slider('option','max'))
{
Slideval = lastSlideValue+1;
}
else if (lastSlideValue > $(this).slider('option','min'))
{
Slideval = lastSlideValue-1;
}
lastSlideValue = Slideval;
}
console.log(Slideval, value)
if(value < Slideval) {
console.log("incremented")
} else if(value > Slideval){
console.log("decremented")
}
value = Slideval;
if (!internalSlideCalling){
internalSlideCalling = true;
$(this).slider('value',Slideval);
}
else
internalSlideCalling = false;
}
});
$("#slider").slider('values',valMap);

Then you can use event which will raise when we move slider and then set the value for slider.We can manually set the slider value.
This is event code
slide: function( event, ui ) {
// code
},
$('#id').slider("value",value); //using this we can set the slider value

Use
$("#slider").slider({
step: 50
})
Here is the link for more information - http://jqueryui.com/slider/#steps