Technical Interview Questions
When a Vue instance is created in Vue.js, it goes through a series of steps after creation. First, they are created then mounted and after that destroyed at the end. In this process, it also runs functions known as life cycle hooks. These life cycle hooks allow the developers to add their own code at … Read more
In Vue.js applications, memory leaks often come from using third-party libraries that create their own instances and/or manipulate the DOM. The v-if directive and the Vue Router destroy Vue component instances. To overcome this issue, do a cleanup action before the component gets destroyed. It should be done manually in the beforeDestroy() lifecycle hook. For … Read more
The ref if an attribute that is used to access a component directly. Despite having the props and events, if you want to access a child component directly, you can assign a reference ID to the child component using the ref attribute. Example: Now you can use this.$refs.usernameInput where we have to define this ref … Read more
In Vue.js, the $child property is just like $parent property, but it is used to access the child instance. In Vue.js, there is no $child property. If you encounter a question asking about $child property in Vue.js, the correct answer would be that there is no such property. In earlier versions of Vue.js (prior to … Read more
In Vue.js, the $parent property is used to access the parent instance from a child. It is similar to the $root property. The $parent property provides direct access, but it makes the application hard to test and debug. In this property, it is very difficult to find out where the mutation comes from. In Vue.js, … Read more