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; \n}\n}\n","type":"text"} 16f:{"bold":true,"text":"2.Ternary Operator\n","type":"text"} 170:{"text":"function StatusMessage({ isOnline }) { \n return ( \n

\nStatus: {isOnline ? 'Online' : 'Offline'} \n

\n); \n} \n","type":"text"} 171:{"bold":true,"text":"3. Logical && Operator \n","type":"text"} 172:{"text":"function Notifications({ messages }) { \nreturn ( \n

\n{messages.length > 0 &&

You have {messages.length} new messages!

} \n

\n ); \n} \n","type":"text"} 173:{"bold":true,"text":"4. Switch Statement \n","type":"text"} 174:{"text":"function UserRoleBadge({ role }) { \nconst renderBadge = () => { \nswitch (role) { \ncase 'admin': \nreturn Admin;\ncase 'moderator': \nreturn Moderator;\ncase 'user': \nreturn User; \ndefault:\n return Guest; \n } \n }; \nreturn

{renderBadge()}

; \n} ","type":"text"} 16c:["$16d","$16e","$16f","$170","$171","$172","$173","$174"] 16b:{"type":"code","children":"$16c"} 177:{"text":"","type":"text"} 176:["$177"] 175:{"type":"paragraph","children":"$176"} 17a:{"text":"Lists and Keys","type":"text"} 179:["$17a"] 178:{"type":"heading","level":2,"children":"$179"} 17d:{"text":"When rendering lists of elements, React requires each item to have a unique key prop. ","type":"text"} 17c:["$17d"] 17b:{"type":"paragraph","children":"$17c"} 180:{"bold":true,"text":"Why Keys Are Important ","type":"text"} 17f:["$180"] 17e:{"type":"heading","level":6,"children":"$17f"} 185:{"text":"Help React identify which items have changed ","type":"text"} 184:["$185"] 183:{"type":"list-item","children":"$184"} 188:{"text":"Optimize rendering performance ","type":"text"} 187:["$188"] 186:{"type":"list-item","children":"$187"} 18b:{"text":"Prevent component state issues during re-renders ","type":"text"} 18a:["$18b"] 189:{"type":"list-item","children":"$18a"}

Rohit Pawar

ReactJS Fundamentals: From Core Concepts to Your First App