[Solved] What is wrong with this Angular template expression?{{ 123 | uppercase | slice:0:2 }} — Ans: There is no error; this works fine | Angular

Angular - Pipes

What is wrong with this Angular template expression?
{{ 123 | uppercase | slice:0:2 }}

ANumbers cannot be used with pipes

BThere is no error; this works fine

CThe <code>uppercase</code> pipe cannot be applied to a number

DThe <code>slice</code> pipe requires a string input

Step-by-Step Solution

Solution:

Step 1: Check the first pipe uppercase usage
Angular's uppercase pipe coerces the input to a string first (123 becomes '123'), then applies toUpperCase(), resulting in '123'.
Step 2: Apply the second pipe slice:0:2
On '123', slice from 0 to 2 gives '12'. No error occurs.
Final Answer:
There is no error; this works fine -> Option B
Quick Check:
Uppercase coerces number to string, then slice works [OK]

Quick Trick: Angular pipes like uppercase coerce non-strings to string [OK]

Common Mistakes:

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What is wrong with this Angular template expression?