如何为与当前值一起滑动的滑块制作标签？

<div class="slider-container">
  <input type="range" min="0" max="100" value="50" class="slider" id="myRange">
  <span class="label" id="sliderValue">50</span>
</div>

.slider-container {
  position: relative;
  width: 300px;
}
.slider {
  -webkit-appearance: none; /* 移除默认样式 */
  width: 100%;
  height: 15px;
  border-radius: 5px;
  background: #d3d3d3;
  outline: none;
  opacity: 0.7;
  -webkit-transition: .2s; /* 渐变效果 */
  transition: opacity .2s;
}
.slider:hover {
  opacity: 1;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: #4CAF50;
  cursor: pointer;
}
.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: #4CAF50;
  cursor: pointer;
}
.label {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: white;
  padding: 5px 10px;
  border-radius: 5px;
}

var slider = document.getElementById("myRange");
var label = document.getElementById("sliderValue");

slider.oninput = function() {
  label.innerHTML = this.value;
}