var thumbsize = 14;
function draw(slider,splitvalue) {
/* set function vars */
var min = slider.querySelector('.min');
var max = slider.querySelector('.max');
var lower = slider.querySelector('.lower');
var upper = slider.querySelector('.upper');
var legend = slider.querySelector('.legend');
var thumbsize = parseInt(slider.getAttribute('data-thumbsize'));
var rangewidth = parseInt(slider.getAttribute('data-rangewidth'));
var rangemin = parseInt(slider.getAttribute('data-rangemin'));
var rangemax = parseInt(slider.getAttribute('data-rangemax'));
/* set min and max attributes */
min.setAttribute('max',splitvalue);
max.setAttribute('min',splitvalue);
/* set css */
min.style.width = parseInt(thumbsize + ((splitvalue - rangemin)/(rangemax - rangemin))*(rangewidth - (2*thumbsize)))+'px';
max.style.width = parseInt(thumbsize + ((rangemax - splitvalue)/(rangemax - rangemin))*(rangewidth - (2*thumbsize)))+'px';
min.style.left = '0px';
max.style.left = parseInt(min.style.width)+'px';
min.style.top = lower.offsetHeight+'px';
max.style.top = lower.offsetHeight+'px';
legend.style.marginTop = min.offsetHeight+'px';
slider.style.height = (lower.offsetHeight + min.offsetHeight + legend.offsetHeight)+'px';
/* correct for 1 off at the end */
if(max.value>(rangemax - 1)) max.setAttribute('data-value',rangemax);
/* write value and labels */
max.value = max.getAttribute('data-value');
min.value = min.getAttribute('data-value');
lower.innerHTML = min.getAttribute('data-value');
upper.innerHTML = max.getAttribute('data-value');
}
function init(slider) {
/* set function vars */
var min = slider.querySelector('.min');
var max = slider.querySelector('.max');
var rangemin = parseInt(min.getAttribute('min'));
var rangemax = parseInt(max.getAttribute('max'));
var avgvalue = (rangemin + rangemax)/2;
var legendnum = slider.getAttribute('data-legendnum');
/* set data-values */
min.setAttribute('data-value',rangemin);
max.setAttribute('data-value',rangemax);
/* set data vars */
slider.setAttribute('data-rangemin',rangemin);
slider.setAttribute('data-rangemax',rangemax);
slider.setAttribute('data-thumbsize',thumbsize);
slider.setAttribute('data-rangewidth',slider.offsetWidth);
/* write labels */
var lower = document.createElement('span');
var upper = document.createElement('span');
lower.classList.add('lower','value');
upper.classList.add('upper','value');
lower.appendChild(document.createTextNode(rangemin));
upper.appendChild(document.createTextNode(rangemax));
slider.insertBefore(lower,min.previousElementSibling);
slider.insertBefore(upper,min.previousElementSibling);
/* write legend */
var legend = document.createElement('div');
legend.classList.add('legend');
var legendvalues = [];
for (var i = 0; i < legendnum; i++) {
legendvalues[i] = document.createElement('div');
var val = Math.round(rangemin+(i/(legendnum-1))*(rangemax - rangemin));
legendvalues[i].appendChild(document.createTextNode(val));
legend.appendChild(legendvalues[i]);
}
slider.appendChild(legend);
/* draw */
draw(slider,avgvalue);
/* events */
min.addEventListener("input", function() {update(min);});
max.addEventListener("input", function() {update(max);});
}
function update(el){
/* set function vars */
var slider = el.parentElement;
var min = slider.querySelector('#min');
var max = slider.querySelector('#max');
var minvalue = Math.floor(min.value);
var maxvalue = Math.floor(max.value);
/* set inactive values before draw */
min.setAttribute('data-value',minvalue);
max.setAttribute('data-value',maxvalue);
var avgvalue = (minvalue + maxvalue)/2;
/* draw */
draw(slider,avgvalue);
}
var sliders = document.querySelectorAll('.min-max-slider');
sliders.forEach( function(slider) {
init(slider);
});
* {padding: 0; margin: 0;}
body {padding: 40px;}
.min-max-slider {position: relative; width: 200px; text-align: center; margin-bottom: 50px;}
.min-max-slider > label {display: none;}
span.value {height: 1.7em; font-weight: bold; display: inline-block;}
span.value.lower::before {content: "€"; display: inline-block;}
span.value.upper::before {content: "- €"; display: inline-block; margin-left: 0.4em;}
.min-max-slider > .legend {display: flex; justify-content: space-between;}
.min-max-slider > .legend > * {font-size: small; opacity: 0.25;}
.min-max-slider > input {cursor: pointer; position: absolute;}
/* webkit specific styling */
.min-max-slider > input {
-webkit-appearance: none;
outline: none!important;
background: transparent;
background-image: linear-gradient(to bottom, transparent 0%, transparent 30%, silver 30%, silver 60%, transparent 60%, transparent 100%);
}
.min-max-slider > input::-webkit-slider-thumb {
-webkit-appearance: none; /* Override default look */
appearance: none;
width: 14px; /* Set a specific slider handle width */
height: 14px; /* Slider handle height */
background: #eee; /* Green background */
cursor: pointer; /* Cursor on hover */
border: 1px solid gray;
border-radius: 100%;
}
.min-max-slider > input::-webkit-slider-runnable-track {cursor: pointer;}
<div class="min-max-slider" data-legendnum="2">
<label for="min">Minimum price</label>
<input id="min" class="min" name="min" type="range" step="1" min="0" max="3000" />
<label for="max">Maximum price</label>
<input id="max" class="max" name="max" type="range" step="1" min="0" max="3000" />
</div>