一、template

<template>
    <div class="slider-container" ref="slider">
        <div class="slider-track" :style="{background: `linear-gradient(to right, #ccc ${ leftThumbValue }%, #D01117 ${ leftThumbValue }%, #D01117 ${ rightThumbValue }%, #ccc ${ rightThumbValue }%)`}"></div>
        <span class="slider-thumb" :style="{ left: leftThumbValue + '%' }" @mousedown="activateThumb('left')">
            {{ leftValue }}
        </span>
        <span class="slider-thumb" :style="{ left: rightThumbValue + '%' }" @mousedown="activateThumb('right')">
            {{ rightValue }}
        </span>
    </div>
</template>
  
<script lang="ts">
import { defineComponent, ref, computed } from 'vue';

export default defineComponent({
    name: 'DoubleSlider',
    props: {
        min: {
            type: Number,
            default: 0
        },
        max: {
            type: Number,
            default: 100
        },
        leftValue: {
            type: Number,
            default: 25
        },
        rightValue: {
            type: Number,
            default: 75
        }
    },
    setup(props, {emit}) {

        const slider = ref<HTMLElement | null>(null);

        const leftThumbValue = computed(() => {
            return ((props.leftValue - props.min) / (props.max - props.min)) * 100;
        });
        const rightThumbValue = computed(() => {
            return ((props.rightValue - props.min) / (props.max - props.min)) * 100;
        });

        const activateThumb = (thumb: 'left' | 'right') => {
            const onMouseMove = (event: MouseEvent) => {
                const sliderRect = slider.value!.getBoundingClientRect();
                const newLeftValue = ((event.clientX - sliderRect.left) / sliderRect.width) * 100;
                const newValue = Math.round((newLeftValue / 100) * (props.max - props.min) + props.min);
                if (thumb === 'left' && newValue < props.rightValue && newValue >= props.min) {
                    emit('change', { leftValue: newValue })
                } else if (thumb === 'right' && newValue > props.leftValue && newValue <= props.max) {
                    emit('change', { rightValue: newValue })
                }
            };

            const deactivateThumb = () => {
                document.removeEventListener('mousemove', onMouseMove);
                document.removeEventListener('mouseup', deactivateThumb);
            };

            document.addEventListener('mousemove', onMouseMove);
            document.addEventListener('mouseup', deactivateThumb);
        };

        return {
            leftThumbValue,
            rightThumbValue,
            activateThumb,
            slider,
        };
    }
});
</script>
  
<style lang="less" scoped>
@import './index.less';
</style>

二、样式

@import "@/common.less";
.slider-container {
  position: relative;
  width: 300px;
  padding: 0 15px;
}

.slider-track {
  position: absolute;
  height: 5px;
  border-radius: 5px;
  width: 100%;
  top: 0;
}

.slider-thumb {
  position: absolute;
  background-color: #E9302D;
  border: 0;
  color: #fff;
  display: inline-block;
  line-height: 1;
  padding: 4px 12px;
  top: -8px;
  font-size: 12px;
  margin-left: -12.5px;
  border-radius: 20px;
  cursor: pointer;
  user-select: none;
}

三、案例

 <Slider :min="600" :max="750" :left-value="leftValue" :right-value="rightValue" @change="changeSlider" />

image.png