laundry/pages/my/coupon/coupon.js

// pages/my/coupon/coupon.js
Page({

    /**
     * 页面的初始数据
     */
    data: {
        down: false,
        shopping: [
            {
                list: [
                    'sss',
                    'sss',
                    'sss',
                ],
                isExpire:false
            },
            {
                list: [
                    'sss',
                    'sss',
                    'sss',
                ],
                isExpire:true
            },
        ],
        isNum:false,
        code:''
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {
      
    },
    changeBtn(e) {
        console.log(e.detail);
        if (e.detail.value || e.detail.value != '') {
            this.setData({
                isNum:true
            })
        }else{
            this.setData({
                isNum:false
            })
        }
        
    },
    onReady: function () {
        this.toast = this.selectComponent("#toast");
    },
    listenerLogin: function () {
        this.toast.showToast('优惠券无效');
    },

    exchange(){
        if (!this.data.isNum) return
        this.listenerLogin()
    },
    clearValue(){
        this.setData({
            code:'',
            isNum:false
        })
    }


})