methods: {
	click1(e) {
	let _this = this;
    
    //监听事件
	this.$eventHub.$on('fire', function(data) {
		_this.activeID = data;
        
        //清除监听，不清除会消耗资源
		_this.$eventHub.$off('fire');
	});

    //e.currentTarget.dataset.id  获取元素上的data-对应的值
	uni.navigateTo({
		url: '../categoryDetail/categoryDetail?id=' + e.currentTarget.dataset.id
	});
	}
}

onLoad(opt) {
    //opt是传过来的queryString对象
	this.activeID = opt.id;
}

click1(e) {
    //获取点击对象的值
	this.activeID = e.currentTarget.dataset.id;
    //先记录值，下面this指向会不一样
	let aa = this.activeID;
    //将数据发射到父级监听事件中
	this.$eventHub.$emit('fire',aa);
    //关闭当前窗口
	uni.navigateBack({});
}