vue实现滑块拖拽校验功能的全过程-662P.COM

vue验证滑块功能,在生活中很多地方都可以见到,使用起来非常方便,这篇文章主要给大家介绍了关于vue实现滑块拖拽校验功能的相关资料,需要的朋友可以参考下

效果图

定义骨架，写html和css

html部分

<template>

<div class="drag-wrapper" ref="dragDiv">

<div class="drag_bg"></div>

<div class="drag_text f14">{{ confirmWords }}</div>

<div ref="moveDiv"

@mousedown="mousedownFn($event)"

:class="{'handler_ok_bg': confirmSuccess}"

class="handler handler_bg"></div>

</div>

</template>

css部分: 由于担心图片源的问题，所以写成了base64的图片

<style scoped>

.drag{

position: relative;

background-color: #e8e8e8;

width: 100%;

height: 40px;

line-height: 40px;

text-align: center;

}

.handler{

width: 40px;

height: 40px;

border: 1px solid #ccc;

cursor: move;

position: absolute;top: 0px;left: 0px;

}

.handler_bg{

background: #fff url("data:image/png;base64,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") no-repeat center;

}

.handler_ok_bg{

background: #fff url("data:image/png;base64,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") no-repeat center;

}

.drag_bg{

background-color: #7ac23c;

height: 40px;

width: 0px;

}

.drag_text{

position: absolute;

top: 0px;

width: 100%;text-align: center;

-moz-user-select: none;

-webkit-user-select: none;

user-select: none;

-o-user-select:none;

-ms-user-select:none;

}

</style>

实现滑动拖拽校验

定义参数

data() {

return {

beginClientX:0, // 距离屏幕左端距离

mouseMoveStata:false, // 触发拖动状态判断

maxwidth:'', // 拖动最大宽度，依据滑块宽度算出来的

confirmWords:'拖动滑块验证', // 滑块文字

confirmSuccess:false // 验证成功判断

}

1. 在mounted里面，根据滑块宽度计算可拖动最大宽度以及监听手指的触摸和离开事件

mounted() {

// 根据滑块宽度计算可拖动最大宽度

this.maxwidth = this.$refs.dragDiv.clientWidth - this.$refs.moveDiv.clientWidth

// 监听手指的触摸事件

document.getElementsByTagName('html')[0].addEventListener('mousemove', this.mouseMoveFn)

// 监听手指离开事件

document.getElementsByTagName('html')[0].addEventListener('mouseup', this.moseUpFn)

}

2. 编写手指滑动的事件和手指离开的事件

mousemove事件

首先判断是否触发拖动状态,然后计算拖动的距离和模块距离，实时赋值

//验证成功函数

mouseMoveFn(e){

if(this.mouseMoveStata){

let width = e.clientX - this.beginClientX

if(width > 0 && width <= this.maxwidth) {

document.getElementsByClassName('handler')[0].style.left = width + 'px'

document.getElementsByClassName('drag_bg')[0].style.width = width + 'px'

}else if(width > this.maxwidth) this.successFunction()

}

},

mouseup事件

把拖动状态改成false，并且把滑块移到对应的手指落下位置上

moseUpFn(e) {

this.mouseMoveState = !1 // 修改状态

const width = e.clientX - this.beginClientX // 计算获取宽度

if(width < this.maxwidth) { // 当宽度小于模块的宽度时，赋值

document.getElementsByClassName('handler')[0].style.left = 0 + 'px'

document.getElementsByClassName('drag_bg')[0].style.width = 0 + 'px'

}

在上面html部分的handler块里，定义了mousedown事件(mousedownFn($event))

需要阻止文件选中等浏览器默认行为，并把触发拖动状态这个阈值打开，记录手指移动的距离

mousedownFn:function (e) {

e.preventDefault && e.preventDefault() // 阻止文字选中等浏览器默认事件

this.mouseMoveStata = true // 把触发拖动状态这个阈值打开

this.beginClientX = e.clientX // 记录手指移动的距离

},

至此，功能就完成了。。

完整的JS代码如下

<script>

export default {

data(){

return {

beginClientX:0, /*距离屏幕左端距离*/

mouseMoveStata:false, /*触发拖动状态判断*/

maxwidth:'', /*拖动最大宽度，依据滑块宽度算出来的*/

confirmWords:'拖动滑块验证', /*滑块文字*/

confirmSuccess:false /*验证成功判断*/

}

},

mounted(){

this.maxwidth = this.$refs.dragDiv.clientWidth - this.$refs.moveDiv.clientWidth

document.getElementsByTagName('html')[0].addEventListener('mousemove',this.mouseMoveFn)

document.getElementsByTagName('html')[0].addEventListener('mouseup',this.moseUpFn)

},

methods: {

mousedownFn:function (e) {

if(!this.confirmSuccess){

e.preventDefault && e.preventDefault() //阻止文字选中等浏览器默认事件

this.mouseMoveStata = true

this.beginClientX = e.clientX

}

},

//mousedoen 事件

successFunction(){

this.confirmSuccess = true

this.confirmWords = '验证通过'

this.$emit('onValidation', true)

if(window.addEventListener){

document.getElementsByTagName('html')[0].removeEventListener('mousemove',this.mouseMoveFn)

document.getElementsByTagName('html')[0].removeEventListener('mouseup',this.moseUpFn)

}else document.getElementsByTagName('html')[0].removeEventListener('mouseup',()=>{})

document.getElementsByClassName('drag_text')[0].style.color = '#fff'

document.getElementsByClassName('handler')[0].style.left = this.maxwidth + 'px'

document.getElementsByClassName('drag_bg')[0].style.width = this.maxwidth + 'px'

},

//验证成功函数

mouseMoveFn(e){

if(this.mouseMoveStata){

let width = e.clientX - this.beginClientX

if(width > 0 && width <= this.maxwidth) {

document.getElementsByClassName('handler')[0].style.left = width + 'px'

document.getElementsByClassName('drag_bg')[0].style.width = width + 'px'

}else if(width > this.maxwidth) this.successFunction()

}

},

//mousemove事件

moseUpFn(e){

this.mouseMoveStata = false

var width = e.clientX - this.beginClientX

if(width<this.maxwidth){

document.getElementsByClassName('handler')[0].style.left = 0 + 'px'

document.getElementsByClassName('drag_bg')[0].style.width = 0 + 'px'

}

</script>

javascript

效果图

定义骨架，写html和css

实现滑动拖拽校验

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