What are dynamic components?
Assesses fundamental understanding of Vue.js conventions, runtime behavior, and memory/performance considerations.
Hiring managers look for precision, avoidance of ambiguous jargon, and ability to explain trade-offs under real production conditions.
The dynamic component will allow you to dynamically switch between multiple components without updating the route
of the application and even retaining the state of the component when switching back to the initial component. It
works by using <component> tag with v-bind:is attribute which accept dynamic component.
Let's create a dynamic component vue instance to switch between different pages of a website,
new Vue({
el: '#app',
data: {
currentPage: 'home'
},
components: {
home: {
template: "<p>Home</p>"
},
about: {
template: "<p>About</p>"
},
contact: {
template: "<p>Contact</p>"
}
}
})
Now you can use the dynamic component which holds the current page,
<div id="app">
<component v-bind:is="currentPage">
<!-- component changes when currentPage changes! -->
<!-- output: Home -->
</component>
</div>
The component will be unmounted when it is switched away but it is possible to force the inactive component alive
using <keep-alive> component
Note: The value of :is attribute can be either name of the registered component or the actual imported object
itself.
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Candidate Response Strategy & Interview Tips
- Start with a concise one-sentence summary: Deliver a direct, confident answer first before expanding into nuances.
- 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).
- Prepare for interviewer follow-ups: Technical hiring panels frequently probe deeper into concurrency, backward compatibility, or alternative libraries.