vm.$watch 與immediate. watch 提供一個監聽的方法，其中immediate 設為true 可讓監聽值在初始和值被改變時觸發callback handler。 ... <看更多>

Business - [email protected] Immediate and Deep Watchers in Vue.js 3. Show less Show ... ... <看更多>

You could also specify the immediate option for a watcher in the watch object like so: watch: { foo: { immediate: true, handler(value) ... ... <看更多>

In Vue.js 3, however, watch triggers immediately by default. That is because the default for the watch hook is { lazy: true } as discussed ... ... <看更多>