Object.freeze

Prevents the modification of existing property attributes and values, and prevents the addition of new properties.

Syntax

freeze(object)

Parameters

• object

  Object to freeze.

Return value

The object that was passed to the function.

Examples

let obj = {cheese: "like", milk: "dislike"}
Object.freeze(obj)
obj.cheese = "dislike" // will have no effect
obj.cheese

"like"