Vue.set (app.$data, "baked, 2)
app.$data,
Why do you add $before data, and if you don"t add $, you will report an error
Vue.set (app.$data, "baked, 2)
app.$data,
Why do you add $before data, and if you don"t add $, you will report an error
app.$data is an instance attribute. You can read the data
data .
the data object observed by the Vue instance. The Vue instance proxies access to its data object properties.
vue document
ide/instance.html" rel=" nofollow noreferrer "> ide/instance.html" rel= "nofollow noreferrer" > https://cn.vuejs.org/v2/guide.
if you take a separate data object, you don't need to add $; but you take the whole data option of Vue, of course you need to add it. For example:
var app = new Vue({
data: {
return {
a: 10
}
}
})
Vue.set(app.$data, 'b', 3) // b
Vue.set(app.a, 'b',3) // ab
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