Q81. How do you delete a cookie?
You can delete a cookie by setting the expiry date as a passed date. You don't need to specify a cookie value in this case. For example, you can delete a username cookie ...
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Q82. How to use innerHTML in React?
The `dangerouslySetInnerHTML` attribute is React's replacement for using `innerHTML` in the browser DOM. Just like `innerHTML`, it is risky to use this attribute consider...
Q83. What are the differences between cookie, local storage and session storage?
Below are some of the differences between cookie, local storage and session storage, | Feature | Cookie | Local storage | Session storage | | ----------------------------...
Q84. How to use styles in React?
The `style` attribute accepts a JavaScript object with camelCased properties rather than a CSS string. This is consistent with the DOM style JavaScript property, is more ...
Q85. What is the main difference between localStorage and sessionStorage?
LocalStorage is the same as SessionStorage but it persists the data even when the browser is closed and reopened(i.e it has no expiration time) whereas in sessionStorage ...
Q86. How events are different in React?
Handling events in React elements has some syntactic differences: 1. React event handlers are named using camelCase, rather than lowercase. 2. With JSX you pass a functio...
Q87. How do you access web storage?
The Window object implements the `WindowLocalStorage` and `WindowSessionStorage` objects which has `localStorage`(window.localStorage) and `sessionStorage`(window.session...
Q88. What is the impact of indexes as keys?
Keys should be stable, predictable, and unique so that React can keep track of elements. In the below code snippet each element's key will be based on ordering, rather th...
Q89. What are the methods available on session storage?
The session storage provided methods for reading, writing and clearing the session data ```javascript // Save data to sessionStorage sessionStorage.setItem("key", "value"...
Q90. How do you conditionally render components?
In some cases you want to render different components depending on some state. JSX does not render `false` or `undefined`, so you can use conditional _short-circuiting_ t...