wxml里面servername是全局变量
<image wx:else='{{item.b}}' class='b' src='{{serverName}}images/b.png'></image>
在js里面配置
//index.js
//获取应用实例
const app = getApp()
Page({
data: {
banUrls: [
app.globalData.serverName + 'images/banner/ban1.jpg',
app.globalData.serverName + 'images/banner/ban1.jpg',
app.globalData.serverName + 'images/banner/ban1.jpg'
],
indicatorDots: true,
autoplay: true,
interval: 1000,
duration: 2000,
circular: true,
serverName:app.globalData.serverName,