vue實現滑塊拖拽校驗功能的全過程
阿新 • • 發佈:2021-08-06
效果圖
定義骨架,寫html和
html部分
<template> <div class="drag-wrapper" ref="dragDiv"> <div class="drag_bg"></div> <div class="drag_text f14">{{ confirmWords }}</div> <!-- 移動的模組 --> <div ref="moveDiv" @mousedown="mousedownFn($event)" :class="{'handler_ok_bg': confirmSuccess}" class="handler handler_bg"></div> </div> </template>
css部分: 由於擔心圖片源的問題,所以寫成了base64的圖片
<style scoped> .drag{ position: relative; background-color: #e8e8e8; width: 100%; height: 40px; line-height: 40px; text-align: center; } .handler{ width: 40px; height: 40px; border: 1px solid #ccc; cursor: move; position: absolute;top: 0px;left: 0px; } .handler_bg{ background: #fff url("data:image/png;base64,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") no-repeat center; } .handler_ok_bg{ background: #fff url("data:image/png;base64,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.cppcns.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") no-repeat center; } .drag_bg{ background-color: #7ac23c; height: 40px; width: 0px; } .drag_text{ position: absolute; top: 0px; width: 100%;text-align: center; -moz-user-select: none; -webkit-user-select: none; user-select: none; -o-user-select:none; -ms-user-select:none; } </style>
實現滑動拖拽校驗
定義引數
data() { return { beginClientX:0,// 距離螢幕左端距離 mouseMoveStata:false,// 觸發拖動狀態 判斷 maxwidth:'',// 拖動最大寬度,依據滑塊寬度算出來的 confirmWords:'拖動滑塊驗證',// 滑塊文字 confirmSuccess:false // 驗證成功判斷 } }
1. 在mounted裡面,根據滑塊寬度計算可拖動最大寬度以及監聽手指的觸控和離開事件
mounted() {
// 根據滑塊寬度計算可拖動最大寬度
this.maxwidth = this.$refs.dragDiv.clientWidth - this.$refs.moveDiwww.cppcns.comv.clientWidth
// 監聽手指的觸控事件
document.getElementsByTagName('html')[0].addEventListener('mousemove',this.mouseMoveFn)
// 監聽手指離開事件
document.getElementsByTagName('html')[0].addEventListener('mouseup',this.moseUpFn)
}
2. 編寫手指滑動的事件和手指離開的事件
mousemove事件
首先判斷是否觸發拖動狀態,然後計算拖動的距離和模組距離,實時賦值
//驗證成功函式 mouseMoveFn(e){ if(this.mouseMoveStata){ let width = e.clientX - this.beginClientX if(width > 0 && width <= this.maxwidth) { document.getElementsByClassName('handler')[0].style.left = width + 'px' document.getElementsByClassName('drag_bg')[0].style.width = width + 'px' }else if(width > this.maxwidth) this.successFunction() } },
mouseup事件
把拖動狀態改成false,並且把滑塊移到對應的手指落下位置上
moseUpFn(e) { this.mouseMoveState = !1 // 修改狀態 const width = e.clientX - this.beginClientX // 計算獲取寬度 if(width < this.maxwidth) { // 當寬度小於模組的寬度時,賦值 document.getElementsByClassName('handler')[0].style.left = 0 + 'px' document.getElementsByClassName('drag_bg')[0].style.width = 0 + 'px' } }
在上面html部分的handler塊裡,定義了mousedown事件(mousedownFn($event))
需要阻止檔案選中等瀏覽器預設行為,並把觸發拖動狀態這個閾值開啟,記錄手指移動的距離
mousedownFn:function (e) { e.preventDefault && e.preventDefault() // 阻止文字選中等 瀏覽器預設事件 this.mouseMoveStata = true // 把觸發拖動狀態這個閾值開啟 this.beginClientX = e.clientX // 記錄手指移動的距離 },
至此,功能就完成了。。
完整的程式碼如下
<script> export default { data(){ return { beginClientX:0,/*距離螢幕左端距離*/ mouseMoveStata:false,/*觸發拖動狀態 判斷*/ maxwidth:'',/*拖動最大寬度,依據滑塊寬度算出來的*/ confirmWords:'拖動滑塊驗證',/*滑塊文字*/ confirmSuccess:false /*驗證成功判斷*/ } },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() //阻止文字選中等 瀏覽器預設事件 this.mouseMoveStata = true this.beginClientX = e.clientX } },//mousedoen 事件 successFunction(){ this.confirmSuccess = true this.confirmWords = '驗證通過' 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' },//驗證成功函式 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>
總結
到此這篇關於實現滑塊拖拽校驗功能的文章就介紹到這了,更多相關vue滑塊拖拽校驗內容請搜尋我們以前的文章或繼續瀏覽下面的相關文章希望大家以後多多支援我們!