xiaoshi-wx/node_modules/wux-weapp/example/pages/circle/index.js

import ad from '../index/ad'

ad({
    data: {
        percent: 50,
    },
    add() {
        let percent = this.data.percent + 10

        if (this.data.percent >= 100) {
            percent = 0
        }

        this.setData({
            percent,
        })
    },
})