const profile = { name: 'Ana', role: 'designer' };
const role = profile['role'];
console.log(role);The “role” string is used as the key, and the read value is designer.
LESSON 43 OF 50
Read a property with brackets
Access a key through an expression inside brackets.
STEP 1 · LEARN
How it works
`object[expression]` turns the expression result into a key. A string such as “role” selects that named property.
const role = 'designer';
console.log(role);The value is hard-coded and does not demonstrate bracket access.
STEP 2 · APPLY
Your exercise
Store profile[“role”] in role and print the variable.
script.jsJAVASCRIPT
Isolated consoleisolated
Preparing the runtime…
Run the code to see the result.The draft stays only in this browser.Isolated QuickJS · no DOM, session or network
STEP 4 · CHECK
What needs to pass
0%not checked
- ○profile contains the role property.
- ○role receives profile[“role”].
- ○The output is exactly designer.
Explain the solution logic
Brackets allow the property name to be supplied as a value.