: Learning how to handle asynchronous outcomes (pending, fulfilled, or rejected).
try // Code that might throw an error catch (error) console.error(error.message); cisco javascript essentials 2 answers exclusive
Cisco JavaScript Essentials 2 (JSE2) is a major step toward earning your JSA – Certified Associate JavaScript Programmer : Learning how to handle asynchronous outcomes (pending,
| Question Topic | Exclusive Correct Answer | |----------------|--------------------------| | typeof null | "object" (historical bug) | | Best way to deep clone an object | JSON.parse(JSON.stringify(obj)) (with caveats) | | const variable reassignment | Throws TypeError | | for...in vs for...of | for...in loops over enumerable property keys (including prototype); for...of loops over iterable values (Array, Map, Set) | | Hoisting behavior with let | Variable is hoisted but not initialized (Temporal Dead Zone) | | Event propagation order | Capture (outer to target) → Target → Bubbling (target to outer) | | To stop bubbling | event.stopPropagation() | | To prevent default action | event.preventDefault() | | Output of [] + [] | "" (empty string) | | Output of [] + {} | "[object Object]" | | Output of {} + [] | 0 (parsed as empty block + numeric conversion of [] ) | Are you looking for a comprehensive guide to
What is the output?
: Using the extends keyword to create subclasses and the super keyword to access parent methods.
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