微信小程序实现多行文字滚动效果

swiper-item {
 height: 100%;
}

//index.js
//获取应用实例
import api from "../../utils/api.js"
var token = ''
const app = getApp()

Page({
 data: {
  topnewslist:[]
 },
 onLoad: function () {
 },
 tonewsdetail(e){
  var newsid=e.currentTarget.dataset.newsid;
  wx.navigateTo({
   url: '/pages/newsdetail/newsdetail&＃63;newsid='+newsid,
  })
 },

 loadscrollnews(){
  api.get("mpapi/mpmnews.ashx", { action:'toplist',token:token}).then((res)=>{
   if(res.code==1){
   //res.list=[{"new_id":1,"new_topic":"111"},{"new_id":2,"new_topic":"222"},{"new_id":3,"new_topic":"333"},{"new_id":4,"new_topic":"444"}]
    this.setData({
     topnewslist: this.splitArr(res.list, 2) //调用
     //调用之后[[{"new_id":1,"new_topic":"111"},{"new_id":2,"new_topic":"222"}],[{"new_id":3,"new_topic":"333"},{"new_id":4,"new_topic":"444"}]]
    })
   }
  })
 },
 /**
  * 分割数组创建二维数组封装
  * @param data 数组
  * @param senArrLen 需要分割成子数组的长度
  */
 splitArr(data, senArrLen){
  //处理成len个一组的数据
  let data_len = data.length;
  let arrOuter_len = data_len % senArrLen === 0 &＃63; data_len / senArrLen : parseInt((data_len / senArrLen) + '') + 1;
  let arrSec_len = data_len > senArrLen &＃63; senArrLen : data_len;//内层数组的长度
  let arrOuter = new Array(arrOuter_len);//最外层数组
  let arrOuter_index = 0;//外层数组的子元素下标
  // console.log(data_len % len);
  for (let i = 0; i