[{"createTime":1735734952000,"id":1,"img":"hwy_ms_500_252.jpeg","link":"https://activity.huaweicloud.com/cps.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=V1g3MDY4NTY=&utm_medium=cps&utm_campaign=201905","name":"华为云秒杀","status":9,"txt":"华为云38元秒杀","type":1,"updateTime":1735747411000,"userId":3},{"createTime":1736173885000,"id":2,"img":"txy_480_300.png","link":"https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=edb15096bfff75effaaa8c8bb66138bd&from=console","name":"腾讯云秒杀","status":9,"txt":"腾讯云限量秒杀","type":1,"updateTime":1736173885000,"userId":3},{"createTime":1736177492000,"id":3,"img":"aly_251_140.png","link":"https://www.aliyun.com/minisite/goods?userCode=pwp8kmv3","memo":"","name":"阿里云","status":9,"txt":"阿里云2折起","type":1,"updateTime":1736177492000,"userId":3},{"createTime":1735660800000,"id":4,"img":"vultr_560_300.png","link":"https://www.vultr.com/?ref=9603742-8H","name":"Vultr","status":9,"txt":"Vultr送$100","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":5,"img":"jdy_663_320.jpg","link":"https://3.cn/2ay1-e5t","name":"京东云","status":9,"txt":"京东云特惠专区","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":6,"img":"new_ads.png","link":"https://www.iodraw.com/ads","name":"发布广告","status":9,"txt":"发布广告","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":7,"img":"yun_910_50.png","link":"https://activity.huaweicloud.com/discount_area_v5/index.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=aXhpYW95YW5nOA===&utm_medium=cps&utm_campaign=201905","name":"底部","status":9,"txt":"高性能云服务器2折起","type":2,"updateTime":1735660800000,"userId":3}]
方式一
watch: { "$store.state.userInfo.Name":{ handler:function(newVal,oldVal){
console.log(newVal,oldVal); } } }
方式二
computed: { isEdit () { return this.$store.state.userInfo.Name; //需要监听的数据 } },
watch: { isEdit(newVal, oldVal) { console.log(newVal,oldVal); } },
区别
* 区别一：第二种方式是先通过计算属性时刻监测store的数据变化，从而触发isEdit的监听函数，明显需要多一步
*
区别二：如果监听store的数据是一个对象，第一种方式只需要加上深度监听，也可以实现数据的变化监听，而第二种方式却无法监听到store的对象数据变化，例如
第一种方式
watch: { //此时我监听的是对象，当$store.state.userInfo.Name发生修改时，此时需要深度监听才能监听到数据变化
"$store.state.userInfo":{ deep:true,//深度监听设置为 true handler:function(newVal,
oldVal){ console.log("数据发生变化啦"); //修改数据时，能看到输出结果 console.log(newVal,oldVal); } }
}
第二种方式
computed: { isEdit () { return this.$store.state.userInfo; //需要监听的数据 }, },
watch: { isEdit(newVal, oldVal) { console.log("数据发生变化啦");
//修改数据时，看不到该输出结果，因为无法监听到数据的变化 console.log(newVal,oldVal); } },
