微信小程序为用户提供选择地址

<form bindsubmit="formSubmit">
    <picker range='' bindchange="select_address" mode="region" value='{{ address }}'>
        {{ address }}
    </picker>
    <button form-type="submit">保存</button>
</form>

Page({
    data: {
        address: "请选择收货地址"
    },
    select_address: function(event){
        let address = event.detail.value.join()
        this.setData({
            address: address
        })
    },

    formSubmit: function(event){
        console.log(this.data.address)
    }
})