javascript using this in a child method-CodePudding

Method:

a = {
  foo: 1,
  bar() {
    return this.foo   1
  },
  lol: {
    baz() {
      return this.foo
    }
  }
}

a.bar() this which refers to a which is what I want. I'm looking for a way for the child method inside a.lol.baz to also have this refer to a. Is there anyway to do it?

CodePudding user response：

You can't refer to it directly. But you can bind the function to the object explicitly, then this will be available.

a = {
  foo: 1,
  bar() {
    return this.foo   1
  },
  lol: {}
}

a.lol.baz = (function() {
  return this.foo
}).bind(a);

console.log(a.lol.baz());

CodePudding user response：

you can use a.lol.baz.call(a) function

a = {
  foo: 1,
  bar() {
    return this.foo   1
  },
  lol: {
    baz() {

      return this.foo
    }
  }
}
var res=a.lol.baz.call(a)
alert(res)