我有一个数组:
basicForm.schema = [
{},
{} // I want to watch only this
]
我试着这么做:
‘basicForm.schema[1].value’: {
handler (schema) {
const plan = schema.find(field => {
return field.name === ‘plan’
})
},
deep: true
},
但我犯了一个错误:
vue.js？3de6:573[Vue warn]:监视路径失败:
正确的方法是什么？
你可以 Select watch a computed property:
new Vue({
el: '#app',
data: {
basicForm: {
schema: [
{a: 1},{b: 2} // I want to watch only this
]
}
},
computed: {
bToWatch: function() {
return this.basicForm.schema[1].b
}
},
methods: {
incB: function() {
this.basicForm.schema[1].b++
}
},
watch: {
bToWatch: function(newVal, oldVal) {
console.log(newVal)
}
}
});<script src="https://unpkg.com/vue/dist/vue.js"></script>
<div id="app">
<button @click="incB()">Inc</button>
</div>