reader/pages/index/index.js

Page({

    /**
     * 页面的初始数据
     */
    data: {
        background: ['demo-text-1', 'demo-text-2', 'demo-text-3'],
        currentType: '1'
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onShow() {
        if (typeof this.getTabBar === 'function') {
            this.getTabBar().setData({
                selected: 1
            })
        }
    },
    selectType({
        target
    }) {
        if (target.dataset.type) {
            this.setData({
                currentType: target.dataset.type
            })
        }
    }
})