How to use model directive with two way computed property?
Interviewer Expectations for this Question
01
Core Competency
Assesses fundamental understanding of Vue.js conventions, runtime behavior, and memory/performance considerations.
02
Evaluation Criteria
Hiring managers look for precision, avoidance of ambiguous jargon, and ability to explain trade-offs under real production conditions.
Comprehensive Model Answer
Verified Solution
You can still use model directive using two-way computed property with a setter.
<input v-model="username">
computed: {
username: {
get () {
return this.$store.state.user.username
},
set (value) {
this.$store.commit('updateProfile', value)
}
}
}
mutations: {
updateProfile (state, username) {
state.user.username = username
}
}
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Candidate Response Strategy & Interview Tips
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- Demonstrate real-world trade-offs: Discuss where this approach excels and when you would avoid it in production systems.
- Discuss complexity & edge cases: Proactively explain time/space complexity or boundary conditions (null values, scale limits).
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