微信小程序滑块验证实现方法
下面给大家介绍下微信小程序滑块验证的效果图及实例代码:
如图:
滑块验证组件
puzzleVerify
目录
index.wxml
<!-- 滑动验证弹窗 --> <view class="slide_model" wx:if="{{slidebel}}"> <view class="slide_wrapper"> <!-- 拼图图片部分 --> <view class="canvas_img" id="canvas_img"> <!-- 背景图片 --> <canvas style="width: {{canvas_width}}px; height: {{canvas_width * 13 / 28}}px;" canvas-id="firstCanvas" id="firstCanvas"></canvas> <!-- 被抠方块 --> <cover-view class="canvas_view" style="left:{{canfile_x}}px;top:{{canfile_y}}px;"></cover-view> <!-- 可移动空格 --> <cover-image class="canfile_image" style="top:{{canfile_y}}px;left:{{slide_clientX > canvas_width-50 ? canvas_width-50 : slide_clientX}}px;" src="{{canfile_image}}"></cover-image> </view> <!-- 滑块 --> <view class="canvas_slide"> <view class="canvas_width" style="width:{{slide_clientX > canvas_width-50?canvas_width-50:slide_clientX}}px;{{slide_status == 2?'background:#52CCBA;':''}}{{slide_status == 3?'background:#F57A7A;':''}}"> </view> <view class="canvas_kus" bindtouchstart="slide_start" bindtouchmove="slide_hmove" bindtouchend="slide_chend" style="left:{{slide_clientX > canvas_width-50?canvas_width-50:slide_clientX}}px; {{slide_status == 0?'color: #333;':''}} {{slide_status == 1?'background:#1991FA;':''}} {{slide_status == 2?'background:#52CCBA;':''}} {{slide_status == 3?'background:#F57A7A;':''}}"> <view wx:if="{{slide_status < 2}}" style="background-image: {{slide_status==0?'url(/imgs/puzzle-uncheck.png)':'url(/imgs/puzzle-uncheck2.png)'}}"> </view> <view wx:if="{{slide_status == 2}}"> <image src="/imgs/puzzle-checked.png" mode="aspectFit" style="width:40rpx;height:40rpx;margin-top:10px;"> </image> </view> <view wx:if="{{slide_status == 3}}"> <image src="/imgs/puzzle-fail.png" mode="aspectFit" style="width:40rpx;height:40rpx;margin-top:10px;"> </image> </view> </view> <view wx:if="{{slide_status == 0 || slide_status == 1}}">拖动左边滑块完成上方拼图</view> </view> <!-- 底部按钮 --> <view class="canvas_guil"> <image bindtap="visidlisd" class="footer-icon" src="/imgs/puzzle-close.png" style="width: 50rpx; height: 50rpx;"></image> <image bindtap="slide_tap" class="footer-icon" src="/imgs/puzzle-fresh.png" style="width: 48rpx; height: 48rpx;"></image> </view> </view> </view>
index.wxss
/* 拼图滑动验证 */ .slide_model { width: 100%; height: 100vh; z-index: 999; position: fixed; left: 0; top: 0; background: rgba(0, 0, 0, 0.4); display: flex; align-items: center; justify-content: center; } .slide_wrapper { float: left; z-index: 1; position: relative; width: 90%; background-color: #fff; } .canvas_img { width: 90%; min-height: 150px; position: relative; margin: 25rpx auto 0; } #firstCanvas { z-index: 1 !important; width: 100%; height: 100%; } /* 被抠的空格 */ .canvas_view { width: 50px; height: 50px; position: absolute; background: rgba(0, 0, 0, 0.6); z-index: 2; box-shadow: 0 0 5px 2px rgba(255, 255, 255, 0.5); } /* 移动的空格 */ .canfile_image { width: 50px; height: 50px; position: absolute; left: 0; z-index: 3; box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.8); box-sizing: border-box; } .canfile_image::before { content: ""; position: absolute; width: 100%; height: 100%; box-shadow: 0 0 8px 5px rgba(255, 255, 255, 0.8) inset; } .canvas_slide { width: 90%; height: 45px; background: #eee; text-align: center; line-height: 80rpx; margin: 0 auto; position: relative; font-size: 26rpx; } /* 滑条上滑块经过的部分 */ .canvas_width { position: absolute; left: 0; top: 0; height: 45px; background-color: #1991FA; width: 0; border-top: 1px solid #ddd; border-bottom: 1px solid #ddd; } /* 滑块 */ .canvas_kus { width: 48px; height: 45px; background-color: #fff; font-size: 36rpx; font-weight: 700; position: absolute; left: 0; top: 0; border: 1px solid #ddd; color: #fff; box-shadow: 0 0 10px rgba(0, 0, 0, 0.3); } .canvas_kus>view { width: 100%; height: 100%; background-position: center; background-size: 50% 40%; background-repeat: no-repeat; } /* 底部按钮位置 */ .canvas_guil { width: 100%; border-top: 1px solid #f4f4f4; height: 100rpx; display: flex; align-items: center; float: left; font-size: 30rpx; color: #666; } .canvas_guil>image { margin-left: 30rpx; }
index.js
Component({ /** * 组件的属性列表 */ properties: { sildeBlockCont: { //接受父组件值 type: String } }, /** * 组件的初始数据 */ data: { canvas_width: 0, slidebel: false, //滑动弹窗 canfile_image: '', //裁剪图片 canfile_x: '', //被抠方块的水平位置 canfile_y: '', //被抠方块的垂直位置 slide_clientX: 0, //移动位置 slide_status: 0, //0 停止操作 1 触发长按 2 正确 3 错误 }, /** * 组件的方法列表 */ methods: { // 弹窗 visidlisd(e) { var that = this this.setData({ slidebel: !this.data.slidebel }) if (this.data.slidebel) { if (this.data.canvas_width != 0) { this.slide_tap() return } wx.nextTick(() => { let query = this.createSelectorQuery() query.select('#canvas_img').boundingClientRect(function (rect) { that.setData({ canvas_width: rect.width }) that.slide_tap() }).exec() }) } }, // 画布 slide_tap(e) { var that = this var imgIndex = Math.round(Math.random() * 13 + 1) that.setData({ canfile_x: Math.round(Math.random() * (this.data.canvas_width - 120) + 60), canfile_y: Math.round(Math.random() * (this.data.canvas_width * 13 / 28 - 60)), canfile_image: '' }) setTimeout(function () { var context = wx.createCanvasContext('firstCanvas', that) context.width = that.data.canvas_width context.height = that.data.canvas_width * 13 / 28 // /imgs/puzzle-bg-${imgIndex}.jpg 为滑块背景图 从静态资源获取 如从接口获取可从that.properties.properties拿 context.drawImage(`/imgs/puzzle-bg-${imgIndex}.jpg`, 0, 0, context.width, context.height) context.draw(false, (() => { wx.canvasToTempFilePath({ x: that.data.canfile_x, y: that.data.canfile_y, width: 50, height: 50, canvasId: 'firstCanvas', success: function (res) { that.setData({ canfile_image: res.tempFilePath }) } }, that); })) }, 50) }, // 滑动开始 slide_start(e) { this.setData({ slide_status: 1 }) }, // 滑动中 slide_hmove(e) { this.setData({ slide_clientX: (e.touches[0].clientX - 60) < 1 ? 0 : (e.touches[0].clientX - 60) }) }, //滑动结束 slide_chend(e) { var that = this var cliextX; var maxX = this.data.canvas_width - 60 if (that.data.slide_clientX < 1) { that.data.slide_status = 0 return false } if (that.data.slide_clientX > maxX) { cliextX = maxX } else { cliextX = that.data.slide_clientX } if (((that.data.canfile_x + 5) > cliextX) && ((that.data.canfile_x - 5) < cliextX)) { that.setData({ slide_status: 2, slide_clientX: that.data.canfile_x, }) setTimeout(function () { that.setData({ slidebel: false, }) }, 500) wx.showToast({ icon: 'success', title: '验证成功', }) that.triggerEvent('puzzleVerify') } else { that.setData({ slide_status: 3, }) } setTimeout(function () { that.setData({ slide_status: 0, slide_clientX: 0, }) }, 500) }, }, lifetimes: { created() { // 在组件实例刚刚被创建时执行 }, ready() { // 在组件在视图层布局完成后执行 // console.log(this.properties.sildeBlockCont); }, } })
index.json
{ "component": true, "usingComponents": {} }
父组件调用滑块
json
"usingComponents": { "puzzleVerify": "/components/puzzleVerify/index" }
wxml
<button bindtap="getCode"></button> <puzzleVerify id="puzzleVerify" bind:puzzleVerify="countDown" sildeBlockCont="{{sildeBlockCont}}"></puzzleVerify>
js
data: { sildeBlockCont: '', //滑块背景图 }, onReady: function () { this.puzzleVerify = this.selectComponent("#puzzleVerify") }, getCode() { this.puzzleVerify.visidlisd() }, // 滑块验证成功操作 countDown() {}
滑块含有静态图片,完整代码和静态图片资源已上传链接: 微信小程序滑块验证源码.
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