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這期內容當中小編將會給大家帶來有關小程序實現左右來回滾動字幕效果,文章內容豐富且以專業的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
wxml:
<!--pages/market/market.wxml--> <swiper indicator-dots="{{indicatorDots}}" autoplay="{{autoplay}}" interval="{{interval}}" duration="{{duration}}"> <block wx:for="{{imgUrls}}" wx:key="unique"> <swiper-item> <image src="{{item}}" class="slide-image"/> </swiper-item> </block> </swiper> <!--彈幕開關--> <view class="barrage-Switch" > <switch id="switch_" bindchange="barrageSwitch"/> <text>彈幕</text> </view> <!--彈幕輸入框--> <view class="barrage-inputText" > <view class="barrage-input"> <input bindblur="bind_shoot" value="{{bind_shootValue}}"/> </view> <view class="barrage-shoot"> <button class="shoot" size="mini" bindtap="shoot">發射</button> </view> </view> <!--彈幕上單文字--> <view class="barrage-fly" > <block wx:for="{{barrage_style}}" wx:key="unique"> <text class="barrage-textFly" >{{item.barrage_shootText}}</text> </block> </view>
wxss:
/* pages/market/market.wxss */ .slide-image{ width: 100%; } /* 彈幕選擇按鈕的操作*/ .barrage-Switch{ position: absolute; bottom: 10px; right: 10px; z-index: 2; } /* 彈幕輸入框的操作*/ .barrage-inputText{ position: absolute; display: flex; background-color: #BFBFBF; width: 100%; height: 40px; flex-direction: row; nav-index: 2; justify-content: center; align-items: center; bottom: 10%; } .barrage-input{ background-color: greenyellow; width: 60%; height: 30px; } .barrage-shoot{ margin-left: 10px; width: 25%; height: 30px; } .shoot{ width: 100%; color: black; } /*彈幕飛飛飛*/ .barrage-fly{ z-index: 3; height: 80%; width: 100%; position: absolute; top: 0; } .barrage-textFly{ position: absolute; }
market.js
// pages/market/market.js var barrage_style_arr = []; var barrage_style_obj = {}; var phoneWidth = 0; var timers = []; var timer; Page({ data: { imgUrls: [ 'http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg', 'http://img06.tooopen.com/images/20160818/tooopen_sy_175866434296.jpg', 'http://img06.tooopen.com/images/20160818/tooopen_sy_175833047715.jpg' ], indicatorDots: true, autoplay: true, interval: 3000, duration: 500, barrageTextColor: "#D3D3D3", barrage_inputText: "none", barrage_shoottextColor: "black", bind_shootValue: "", barrage_style: [], barragefly_display: "none", }, // 生命周期函數--監聽頁面加載 onLoad: function (options) { var that = this; //獲取屏幕的寬度 wx.getSystemInfo({ success: function (res) { that.setData({ barrage_phoneWidth: res.windowWidth - 100, }) } }) phoneWidth = that.data.barrage_phoneWidth; console.log(phoneWidth); }, //是否打開彈幕... barrageSwitch: function (e) { console.log(e); //先判斷沒有打開 if (!e.detail.value) { //清空彈幕 barrage_style_arr = []; //設置data的值 this.setData({ barrageTextColor: "#D3D3D3", barrage_inputText: "none", barragefly_display: "none", barrage_style: barrage_style_arr, }); //清除定時器 clearInterval(timer); } else { this.setData({ barrageTextColor: "#04BE02", barrage_inputText: "flex", barragefly_display: "block", }); //打開定時器 timer = setInterval(this.barrageText_move, 800) } }, //發射按鈕 shoot: function (e) { //字體顏色隨機 var textColor = "rgb(" + parseInt(Math.random() * 256) + "," + parseInt(Math.random() * 256) + "," + parseInt(Math.random() * 256) + ")"; // //設置彈幕字體的水平位置樣式 // var textWidth = -(this.data.bind_shootValue.length*0); //設置彈幕字體的垂直位置樣式 var barrageText_height = (Math.random()) * 266; barrage_style_obj = { // textWidth:textWidth, barrageText_height: barrageText_height, barrage_shootText: this.data.bind_shootValue, barrage_shoottextColor: textColor, barrage_phoneWidth: phoneWidth }; barrage_style_arr.push(barrage_style_obj); this.setData({ barrage_style: barrage_style_arr, //發送彈幕 bind_shootValue: "" //清空輸入框 }) //定時器 讓彈幕動起來 // this.timer= setInterval(this.barrageText_move,800); }, //定時器 讓彈幕動起來 barrageText_move: function () { var timerNum = barrage_style_arr.length; var textMove; for (var i = 0; i < timerNum; i++) { textMove = barrage_style_arr[i].barrage_phoneWidth; console.log("barrage_style_arr[" + i + "].barrage_phoneWidth----------:" + barrage_style_arr[i].barrage_phoneWidth); textMove = textMove - 20; barrage_style_arr[i].barrage_phoneWidth = textMove; //走完的移除掉 if (textMove <= -100) { // clearTimeout(this.timer); barrage_style_arr.splice(0, 1); i--; //全部彈幕運行完 if (barrage_style_arr.length == 0) { this.setData({ barrage_style: barrage_style_arr, }) // clearInterval(this.timer); return; } } console.log("第" + i + "個定時器:", textMove); this.setData({ barrage_style: barrage_style_arr, }) } }, //綁定發射輸入框,將值傳遞給data里的bind_shootValue,發射的時候調用 bind_shoot: function (e) { this.setData({ bind_shootValue: e.detail.value }) }, })
上述就是小編為大家分享的小程序實現左右來回滾動字幕效果了,如果剛好有類似的疑惑,不妨參照上述分析進行理解。如果想知道更多相關知識,歡迎關注億速云行業資訊頻道。
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