Q341. What is the difference between React and ReactDOM?
The `react` package contains `React.createElement()`, `React.Component`, `React.Children`, and other helpers related to elements and component classes. You can think of t...
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Q342. What is the CASE function?
SQL's version of IF-THEN-ELSE. Two forms: simple and searched. ```sql -- Searched CASE (more flexible) SELECT name, CASE WHEN salary >= 100000 THEN 'Executive' WHEN salar...
Q343. How do you check browser support for server-sent events?
You can perform browser support for server-sent events before using it as below, ```javascript if (typeof EventSource !== "undefined") { // Server-sent events supported. ...
Q344. Why ReactDOM is separated from React?
The React team worked on extracting all DOM-related features into a separate library called _ReactDOM_. React v0.14 is the first release in which the libraries are split....
Q345. Different types of SQL statements?
DDL (CREATE, ALTER, DROP, TRUNCATE), DML (INSERT, UPDATE, DELETE, SELECT), DQL (SELECT — sometimes grouped with DML), DCL (GRANT, REVOKE), TCL (COMMIT, ROLLBACK, SAVEPOIN...
Q346. What is universal selector in CSS?
The universal selector is a css selector that can be used to apply styles to all elements on a page or to reset styles for all elements to their default values
Q347. What are the events available for server sent events?
Below are the list of events available for server sent events | Event | Description | |---- | --------- | onopen | It is used when a connection to the server is opened | ...
Q348. How to use React label element?
If you try to render a `` element bound to a text input using the standard `for` attribute, then it produces HTML missing that attribute and prints a warning to the conso...
Q349. Which statements are DDL?
**DDL** stands for **Data Definition Language**. DDL statements define, alter, and destroy database schema structures (tables, indexes, views, schemas, constraints): ### ...
Q350. How to combine multiple inline style objects?
You can use _spread operator_ in regular React: ```jsx harmony {"Submit"} ``` If you're using React Native then you can use the array notation: ```jsx harmony {"Submit"} ...