Q2021. How do you prevent mutating array variables?
The preexisting variables outside of the function scope including state, props and context leads to a mutation and they result in unpredictable bugs during the rendering ...
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Q2022. What are the key differences between Vue 2 and Vue 3?
| Feature | Vue 2 | Vue 3 | | ------------------ | ------------------------- | ------------------------------------ | | API Style | Options API | Composition API + Option...
Q2023. What Is The Use Of Globals() Function In Python?
The globals() function in Python return s the current global symbol table as a dictionary object. Python maintains a symbol table to keep all necessary information about ...
Q2024. How do you find the min and max values without Math functions?
You can write functions which loop through an array comparing each value with the lowest value or highest value to find the min and max values. Let's create those functio...
Q2025. What are capture phase events?
The `onClickCapture` React event is helpful to catch all the events of child elements irrespective of event propagation logic or even if the events propagation stopped. T...
Q2026. What is watch() and how is it used?
The `watch()` function observes a **reactive source**((like `ref`, `reactive`, getter functions or computed values)) and runs a **callback function** whenever that source...
Q2027. Why Do You Use The Zip() Method In Python?
The zip method lets us map the corresponding index of multiple containers so that we can use them using as a single unit. Signature: zip(*iterators) Arguments: Python ite...
Q2028. What is an empty statement and purpose of it?
The empty statement is a semicolon (;) indicating that no statement will be executed, even if JavaScript syntax requires one. Since there is no action with an empty state...
Q2029. How does React updates screen in an application?
React updates UI in three steps, 1. **Triggering or initiating a render:** The component is going to triggered for render in two ways. 1. **Initial render:** When the app...
Q2030. What are the lifecycle hooks in the Vue 3 Composition API and how are they used?
In **Composition API**, lifecycle hooks are functions you call **inside the `setup()` function** to hook into different stages of a component's lifecycle. These hooks rep...