Bird
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0

Consider this Remix client code:

medium📝 component behavior Q4 of 15
Remix - Advanced Patterns
Consider this Remix client code:
const socket = new WebSocket('ws://localhost:3000');
socket.onmessage = (event) => {
  console.log('Message:', event.data);
};

What will be output if the server sends the message 'Update available'?
AMessage: Update available
BUpdate available
CReceived: Update available
DError: No message handler defined
Step-by-Step Solution
Solution:
  1. Step 1: Analyze the onmessage handler

    The handler logs 'Message:' concatenated with event.data.
  2. Step 2: Substitute the server message

    Server sends 'Update available', so console logs 'Message: Update available'.
  3. Final Answer:

    Message: Update available -> Option A
  4. Quick Check:

    Check console.log format matches output [OK]
Quick Trick: Console logs prefix plus event.data [OK]
Common Mistakes:
MISTAKES
  • Ignoring the 'Message:' prefix in console.log
  • Assuming default message prefix 'Received:'
  • Thinking no handler is defined

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