5 React js Interview Questions | ą¤ ą¤Ŗą¤Øą„ ą¤ą¤¾ą¤Øą¤ą¤¾ą¤°ą„ ą¤ą„ ą¤¬ą¤¢ą¤¼ą¤¾ą¤ą¤ | Code Crushers
React js is a popular JavaScript library used for building user interfaces. It is widely used for developing single-page applications and has gained immense popularity in the web development community. If you are preparing for a React js interview, it’s essential to have a good understanding of the library and its concepts. Here are five interview questions that can help you boost your knowledge and prepare for your React js interview in Hindi.
1. React ą¤ą„ą¤Æą¤¾ ą¤¹ą„ ą¤ą¤° ą¤ą¤øą¤ą„ ą¤ą„ą¤Æą¤¾ ą¤«ą¤¾ą¤Æą¤¦ą„ ą¤¹ą„ą¤?
React ą¤ą¤ JavaScript ą¤²ą¤¾ą¤ą¤¬ą„ą¤°ą„ą¤°ą„ ą¤¹ą„ ą¤ą„ ą¤Æą„ą¤ą¤° ą¤ą¤ą¤ą¤°ą¤«ą¤¼ą„ą¤ø ą¤µą¤æą¤ą¤øą¤æą¤¤ ą¤ą¤°ą¤Øą„ ą¤ą„ ą¤²ą¤æą¤ ą¤ą¤øą„ą¤¤ą„ą¤®ą¤¾ą¤² ą¤ą„ ą¤ą¤¾ą¤¤ą„ ą¤¹ą„ą„¤ ą¤Æą¤¹ ą¤ą¤ ą¤øą¤æą¤ą¤ą¤²-ą¤Ŗą„ą¤ ą¤ą¤Ŗą„ą¤²ą¤æą¤ą„ą¤¶ą¤Ø ą¤”ą„ą¤µą¤²ą¤Ŗą¤®ą„ą¤ą¤ ą¤ą„ ą¤²ą¤æą¤ ą¤ą¤Ŗą¤Æą„ą¤ ą¤¹ą„ą¤¤ą„ ą¤¹ą„ ą¤ą¤° ą¤µą„ą¤¬ ą¤”ą„ą¤µą¤²ą¤Ŗą¤®ą„ą¤ą¤ ą¤øą¤®ą„ą¤¦ą¤¾ą¤Æ ą¤®ą„ą¤ ą¤ą¤øą¤ą„ ą¤¬ą¤¹ą„ą¤¤ ą¤ą„ą¤Æą¤¾ą¤¦ą¤¾ ą¤²ą„ą¤ą¤Ŗą„ą¤°ą¤æą¤Æą¤¤ą¤¾ ą¤¹ą„ą„¤
2. Virtual DOM ą¤ą„ą¤Æą¤¾ ą¤¹ą„ ą¤ą¤° ą¤ą¤øą¤ą¤¾ ą¤ą„ą¤Æą¤¾ ą¤ą¤Ŗą¤Æą„ą¤ ą¤¹ą„?
Virtual DOM ą¤ą¤ ą¤ą„ą¤²ą„ą¤Ø ą¤ą„ ą¤¤ą¤°ą¤¹ ą¤¹ą„ ą¤ą„ ą¤°ą¤æą¤Æą¤² DOM ą¤ą„ ą¤Ŗą„ą¤°ą¤¤ą¤æą¤²ą¤æą¤Ŗą¤æ ą¤¬ą¤Øą¤¾ą¤¤ą¤¾ ą¤¹ą„ą„¤ ą¤Æą¤¹ą¤¾ą¤ ą¤µą„ą¤Æą¤ą„ą¤¤ą¤æą¤Æą„ą¤ ą¤ą„ ą¤µą¤æą¤¶ą„ą¤· ą¤°ą„ą¤Ŗ ą¤øą„ ą¤§ą„ą¤Æą¤¾ą¤Ø ą¤¦ą„ą¤Øą¤¾ ą¤ą¤¾ą¤¹ą¤æą¤ ą¤ą¤æ ą¤Æą¤¹ ą¤°ą¤æą¤ą¤² DOM ą¤øą„ą¤ą¤¦ą¤°ą„ą¤Æą¤æą¤ ą¤°ą„ą¤Ŗ ą¤øą„ ą¤µą¤æą¤¶ą„ą¤· ą¤Ŗą„ą¤°ą¤ą¤¾ą¤° ą¤ą¤¾ ą¤¬ą¤Øą¤¾ą¤Øą„ ą¤ą¤¾ ą¤ą¤¾ą¤® ą¤ą¤°ą¤Øą„ ą¤ą„ ą¤²ą¤æą¤ ą¤¹ą„ą¤¤ą¤¾ ą¤¹ą„ą„¤
3. Component ą¤ą„ą¤Æą¤¾ ą¤¹ą„ ą¤ą¤° ą¤ą„ą¤Æą¤¾ ą¤ą¤øą¤ą„ ą¤Ŗą„ą¤°ą¤ą¤¾ą¤° ą¤¹ą„ą¤¤ą„ ą¤¹ą„ą¤?
Component ą¤µą„ ą¤ą¤ą¤” ą¤¹ą„ą¤¤ą„ ą¤¹ą„ą¤ ą¤ą„ ą¤ ą¤Øą„ą¤Æ ą¤ą¤ą¤”ą„ą¤ ą¤®ą„ą¤ ą¤¬ą¤¾ą¤§ą¤¾ ą¤Ŗą¤¾ą¤° ą¤°ą„ą„ą¤¹ą¤¤ą„ ą¤¹ą„ą¤ ą¤ą¤° ą¤ą¤øą„ ą¤”ą„ą¤Ŗą„ą¤²ą¤æą¤ą„ą¤ ą¤Øą¤¹ą„ą¤ ą¤ą¤°ą¤¤ą„ ą¤¹ą„ą¤ą„¤ Component ą¤ą„ą¤µą„ą¤ą¤°ą¤£ ą¤®ą„ą¤ ą¤ą¤øą¤ą¤¾ ą¤®ą¤¹ą¤¤ą„ą¤µą¤Ŗą„ą¤°ą„ą¤£ ą¤Æą„ą¤ą¤¦ą¤¾ą¤Ø ą¤°ą¤¹ą¤¤ą¤¾ ą¤¹ą„ą„¤
4. Props ą¤ą¤° State ą¤®ą„ą¤ ą¤ ą¤ą¤¤ą¤° ą¤ą„ą¤Æą¤¾ ą¤¹ą„?
Props ą¤ą¤° State ą¤¦ą„ą¤Øą„ą¤ ą¤¹ą„ React ą¤ą„ component ą¤ą„ ą¤²ą¤æą¤ ą¤”ą„ą¤ą¤¾ ą¤øą„ą¤ą„ą¤°ą„ ą¤ą¤°ą¤Øą„ ą¤ą„ ą¤¤ą¤°ą„ą¤ą„ ą¤¹ą„ą¤¤ą„ ą¤¹ą„ą¤ą„¤ ą¤¹ą¤¾ą¤²ą¤¾ą¤ą¤ą¤æ, ą¤¦ą„ą¤Øą„ą¤ ą¤®ą„ą¤ ą¤ą„ą¤ ą¤ ą¤ą¤¤ą¤° ą¤¹ą„ą¤¤ą¤¾ ą¤¹ą„ą„¤
5. React Lifecycle Methods ą¤ą„ą¤Æą¤¾ ą¤¹ą„ą¤¤ą„ ą¤¹ą„ą¤ ą¤ą¤° ą¤ą¤Øą¤ą¤¾ ą¤ą„ą¤Æą¤¾ ą¤ą¤Ŗą¤Æą„ą¤ ą¤¹ą„?
ą¤ą¤¬ ą¤ą„ ą¤ą„ą¤ React component ą¤¬ą¤Øą¤¾ą¤Æą¤¾ ą¤ą¤¾ą¤¤ą¤¾ ą¤¹ą„, ą¤¤ą„ ą¤ą¤øą¤ą„ ą¤ą„ą¤µą¤Øą¤ą¤ą„ą¤° ą¤®ą„ą¤ ą¤ą¤ ą¤¤ą¤°ą¤¹ ą¤ą„ ą¤¤ą„ą¤ą¤®ą¤¾ą¤Ø ą¤¶ą¤¾ą¤®ą¤æą¤² ą¤¹ą„ą¤¤ą„ą¤ ą¤¹ą„ą¤, ą¤ą„ ą¤ą¤øą„ ą¤µą„ą¤Æą¤¾ą¤µą¤¹ą„ą¤¤ ą¤ą¤°ą¤Øą„ ą¤®ą„ą¤ ą¤®ą¤¦ą¤¦ ą¤ą¤°ą¤¤ą„ą¤ ą¤¹ą„ą¤ą„¤
ą¤ą¤Ø ą¤øą¤µą¤¾ą¤²ą„ą¤ ą¤ą„ ą¤ą¤µą¤¾ą¤¬ ą¤ą¤¾ą¤Øą¤Øą„ ą¤øą„ ą¤ą¤Ŗ ą¤ ą¤Ŗą¤Øą„ ą¤ą¤¾ą¤Øą¤ą¤¾ą¤°ą„ ą¤ą„ ą¤¬ą¤¢ą¤¼ą¤¾ ą¤øą¤ą¤¤ą„ ą¤¹ą„ą¤ ą¤ą¤° ą¤ ą¤Ŗą¤Øą„ React js interview ą¤ą„ ą¤²ą¤æą¤ ą¤¤ą„ą¤Æą¤¾ą¤°ą„ ą¤ą¤° ą¤øą¤ą¤¤ą„ ą¤¹ą„ą¤ą„¤ ą¤ą¤Ø ą¤øą¤µą¤¾ą¤²ą„ą¤ ą¤ą„ ą¤ ą¤²ą¤¾ą¤µą¤¾ ą¤ą„ ą¤¬ą¤¹ą„ą¤¤ ą¤øą¤¾ą¤°ą„ ą¤øą¤µą¤¾ą¤² ą¤¹ą„ ą¤øą¤ą¤¤ą„ ą¤¹ą„ą¤, ą¤ą¤øą¤ą„ ą¤²ą¤æą¤ ą¤ą¤Ŗ ą¤ ą¤Øą„ą¤Æ ą¤øą„ą¤°ą„ą¤ ą¤øą„ ą¤ą„ ą¤ą¤¾ą¤Øą¤ą¤¾ą¤°ą„ ą¤Ŗą„ą¤°ą¤¾ą¤Ŗą„ą¤¤ ą¤ą¤° ą¤øą¤ą¤¤ą„ ą¤¹ą„ą¤ą„¤
ą¤ą¤®ą„ą¤®ą„ą¤¦ą¤µą¤¾ą¤°ą„ą¤ ą¤ą„ ą¤¬ą¤¢ą¤¼ą¤æą¤Æą¤¾ ą¤¤ą¤°ą„ą¤ą„ ą¤øą„ ą¤¤ą„ą¤Æą¤¾ą¤° ą¤¹ą„ą¤Øą¤¾ ą¤ą¤¾ą¤¹ą¤æą¤ ą¤¤ą¤¾ą¤ą¤æ ą¤µą¤¹ ą¤ ą¤Ŗą¤Øą„ interview ą¤ą„ ą¤¦ą„ą¤°ą¤¾ą¤Ø ą¤ą¤¤ą„ą¤®-ą¤µą¤æą¤¶ą„ą¤µą¤¾ą¤øą¤Ŗą„ą¤°ą„ą¤£ ą¤¹ą„ ą¤øą¤ą„ą¤ą„¤