Q1861. What is the typical use case of portals?
React Portals are primarily used to render UI components such as **modals, tooltips, dropdowns, hovercards, and notifications** outside of their parent component's DOM tr...
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Q1862. How do you create reactive objects?
In version 3.0 you can create a reactive object with the reactive() API. ```javascript const reactiveState = reactive({ count: 0 }) ``` In version 2.6, you can create rea...
Q1863. What Does The Len() Function Do In Python?
In Python, the len() is a primary string function. It determines the length of an input string. ```python >>> some_string = 'techbeamers' ``` >>> len(some_string) 11
Q1864. What is a WeakMap?
A `WeakMap` object is a collection of key/value pairs in which the keys are weakly referenced. In this case, keys must be objects and the values can be arbitrary values. ...
Q1865. How do you set default value for uncontrolled component?
In React, the value attribute on form elements will override the value in the DOM. With an uncontrolled component, you might want React to specify the initial value, but ...
Q1866. What is the purpose new slot directive?
In Vue 2.6 version, the new slot syntax is provided using v-slot directive which aligns syntax with Vue 3.0. This is going to be replacement for old slot syntax. The comp...
Q1867. What Does The Chr() Function Do In Python?
The chr() function got re-added in Python 3.2. In version 3.0, it got removed. It return s the string denoting a character whose Unicode code point is an integer. For exa...
Q1868. What are the differences between WeakMap and Map?
The main difference is that references to key objects in `Map` are strong while references to key objects in `WeakMap` are weak. i.e, A key object in `WeakMap` can be gar...
Q1869. What is your favorite React stack?
Even though the tech stack varies from developer to developer, the most popular stack is used in react boilerplate project code. It mainly uses Redux and redux-saga for s...
Q1870. What is the use of compile method?
VueJS provides compile method which is used to compile a template string into a render function. This method is only available in the full build. For example, you can com...