Javascript unable to delete a member property from a member function

Question

I have an object like this.

var v= {
    a: 1,
    delete: () => delete this.a,
}

I am not able to delete a after executing v.delete

Also relevant: [Self-references in object literals / initializers](https://stackoverflow.com/questions/4616202/self-references-in-object-literals-initializers) — VLAZ, Jun 08 '20 at 06:04
For this you need a normal function `delete: function()` or a shorthand method `delete()`. Arrow function will not have `this` equal to the current object but equal to the context wherever that object was created. — VLAZ, Jun 08 '20 at 06:06

score 2 · Answer 1 · answered Jun 08 '20 at 06:11

2

You need convert arrow to function to use this keyword.

Also you did not call delete method to delete property.

var v= {
    a: 1,
    delete: function () {
      delete this.a
    }
}

v.delete()

console.log(v)

answered Jun 08 '20 at 06:11

Hien Nguyen

kooskoos · Answer 2 · 2020-06-08T06:18:17.400

1

var v= {
    a: 1,
    delete: function(){delete this.a}
}

console.log("before=" + v.a)
v.delete()
console.log("after="v.a)

Arrow function doesn't have access to this context of the current object.

edited Jun 08 '20 at 06:18

answered Jun 08 '20 at 06:08

kooskoos

2 Answers2