vue开发拖拽进度条滑动组件

分享一个最近写的进度条滑动组件,以前都是用jq写,学会了vue,尝试着拿vue来写觉得非常简单,代码复用性很强!

效果图如下:

调用组件如下:

<slider :min=0 :max=100 v-model = "per"></slider>

<template>

<div class="slider" ref="slider">

<div class="process" :style="{width}"></div>

<div class="thunk" ref="trunk" :style="{left}">

<div class="block"></div>

<div class="tips">

<span>{{scale*100}}</span>

<i class="fas fa-caret-down" ></i>

</div>

</div>

</div>

</template>

<script>

/*

* min 进度条最小值

* max 进度条最大值

* v-model 对当前值进行双向绑定实时显示拖拽进度

* */

export default{

props:['min','max','value'],

data(){

return{

slider:null, //滚动条DOM元素

thunk:null, //拖拽DOM元素

per:this.value, //当前值

}

},

//渲染到页面的时候

mounted () {

this.slider = this.$refs.slider;

this.thunk = this.$refs.trunk;

var _this = this;

this.thunk.onmousedown = function (e) {

var width = parseInt(_this.width);

var disX = e.clientX;

document.onmousemove = function(e){

// value, left, width

// 当value变化的时候,会通过计算属性修改left,width

// 拖拽的时候获取的新width

var newWidth = e.clientX - disX + width;

// 拖拽的时候得到新的百分比

var scale = newWidth / _this.slider.offsetWidth;

_this.per = Math.ceil((_this.max - _this.min) * scale + _this.min);

_this.per = Math.max(_this.per,_this.min);

_this.per = Math.min(_this.per,_this.max);

}

document.onmouseup = function(){

document.onmousemove = document.onmouseup = null;

}

return false;

}

},

computed:{

// 设置一个百分比,提供计算slider进度宽度和trunk的left值

// 对应公式为 当前值-最小值/最大值-最小值 = slider进度width / slider总width

// trunk left = slider进度width + trunk宽度/2

scale(){

return (this.per - this.min) / (this.max - this.min);

},

width(){

if(this.slider){

return this.slider.offsetWidth * this.scale + 'px';

}else{

return 0 + 'px'

}

},

left(){

if(this.slider){

return this.slider.offsetWidth * this.scale - this.thunk.offsetWidth/2 + 'px';

}else{

return 0 + 'px'

}

}

},

}

</script>

<style>

.box{margin:100px auto 0;width:80%}

.clear:after{content:'';display:block;clear:both}

.slider{position:relative;margin:20px 0;width:400px;height:10px;background:#e4e7ed;border-radius:5px;cursor:pointer}

.slider .process{position:absolute;left:0;top:0;width:112px;height:10px;border-radius:5px;background:#409eff}

.slider .thunk{position:absolute;left:100px;top:-7px;width:20px;height:20px}

.slider .block{width:20px;height:20px;border-radius:50%;border:2px solid #409eff;background:rgba(255,255,255,1);transition:.2s all}

.slider .tips{position:absolute;left:-7px;bottom:30px;min-width:15px;text-align:center;padding:4px 8px;background:#000;border-radius:5px;height:24px;color:#fff}

.slider .tips i{position:absolute;margin-left:-5px;left:50%;bottom:-9px;font-size:16px;color:#000}

.slider .block:hover{transform:scale(1.1);opacity:.6}

</style>

以上是 vue开发拖拽进度条滑动组件 的全部内容, 来源链接: utcz.com/z/359906.html

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