ES6 - Prevent Object Mutation

JavaScript
1

Tell us what’s happening:

Describe your issue in detail here.

Your code so far

function freezeObj() {
  const MATH_CONSTANTS = {
    PI: 3.14
  };
  // Only change code below this line

object.freeze(MATH_CONSTANTS);

  // Only change code above this line
  try {
    MATH_CONSTANTS.PI = 99;
  } catch(ex) {
    console.log(ex);
  }
  return MATH_CONSTANTS.PI;
}
const PI = freezeObj();

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Challenge Information:

ES6 - Prevent Object Mutation

2

What error are you getting?

3

it doesn’t accept it and pass me!

4

Please talk about what specifically the error message is and what you have tried to fix your code.

1 Like
5

To ensure your data doesn’t change, JavaScript provides a function Object.freeze to prevent data mutation.

Hint: Capital O

6

ReferenceError: object is not defined

7

it shows this error :
ReferenceError: object is not defined

8

Ok, so double check the syntax. Capitalization matters. Did you type Object or object?

1 Like
9

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