Show tick positions in custom range input

Question

Please take a look at the following CodePen. There you can see my custom range input. I want the tick positions of the slider to be shown and for that I added the datalist:<

Answer 1

I know my answer is way way late, but I keep coming back here when I try to find doing the same thing. I did manage to display tickmarks using the following settings.

The code results in the following:

* {
  box-sizing: border-box;
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 25px;
  background: #D3D3D3;
  outline: none;
  opacity: 0.7;
  -webkit-transition: .2s;
  transition: opacity .2s;
}

.slider:hover {
  opacity: 1;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  background: #FF0000;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  background: #FF0000;
  cursor: pointer;
}

.sliderticks {
  display: flex;
  justify-content: space-between;
  padding: 0 10px;
}

.sliderticks p {
  position: relative;
  display: flex;
  justify-content: center;
  text-align: center;
  width: 1px;
  background: #D3D3D3;
  height: 10px;
  line-height: 40px;
  margin: 0 0 20px 0;
}

<div class="range">
  <input type="range" min="0" max="5" value="2" class="slider">
  <div class="sliderticks">
    <p>0</p>
    <p>1</p>
    <p>2</p>
    <p>3</p>
    <p>4</p>
    <p>5</p>
  </div>
</div>

Answer 2

document.querySelectorAll(".__range-step").forEach(function(ctrl) {
	var el = ctrl.querySelector('input');        
	var output = ctrl.querySelector('output'); 
	var newPoint, newPlace, offset;
	el.oninput =function(){ 
		// colorize step options
		ctrl.querySelectorAll("option").forEach(function(opt) {
			if(opt.value<=el.valueAsNumber)                
				opt.style.backgroundColor = '#48530d';
			else
				opt.style.backgroundColor = '#a4b162';
		});           
	};
	el.oninput();    
});

.__range input
{
  outline: none;
	-webkit-appearance: none;
	background-color: #aaa;
	height: 3px;
	width: 100%;
	margin: 10px auto;
}
input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 8px;
    cursor: pointer;
    box-shadow: 0px 0px 0px rgba(0, 0, 0, 0), 0px 0px 0px rgba(13, 13, 13, 0);
    background: #a4b162;
    border-radius: 0px;
    border: 1px solid rgba(0, 0, 0, 0);
}
input[type=range]::-webkit-slider-thumb {
    box-shadow: 0px 0px 0px #000000, 0px 0px 0px #0d0d0d;
    border: 1px solid #000000;
    height: 16px;
    width: 16px;
    border-radius: 0px;
    background: #48530d;
    cursor: pointer;
    -webkit-appearance: none;
    margin-top: -5px;
}

.__range-step{
	position: relative;                
}

.__range-max{
	float: right;
}
.__range-step datalist {
	position:relative;
	display: flex;
	justify-content: space-between;
	height: auto;
	bottom: 16px;
	/* disable text selection */
	-webkit-user-select: none; /* Safari */        
	-moz-user-select: none; /* Firefox */
	-ms-user-select: none; /* IE10+/Edge */                
	user-select: none; /* Standard */
	/* disable click events */
	pointer-events:none;  
}
.__range-step datalist option {
	width: 10px;
	height: 10px;
	min-height: 10px;
  padding:0;
  line-height: 40px;
}

.__range{
  margin:10px 40px;
}

<div class="__range">
      <input value="4" type="range" max="6" min="1" step="1" list="ticks1">
</div>

<div class="__range __range-step">
        <input value="4" type="range" max="6" min="1" step="1" list="ticks1">
        <datalist id="ticks1">
            <option>1</option>
            <option>2</option>
            <option>3</option>
            <option>4</option>
            <option>5</option>
            <option>6</option>
        </datalist>
</div>

Answer 3

-webkit-appearance: none;

The above removes platform-native styling (Chrome / Safari), which removes the ticks.

You can get more information here, but unfortunately, styling support for input ranges (particularly ticks) is still pretty terrible.