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hasownproperty.call

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Demolition answered on April 27, 2020 Popularity 8/10 Helpfulness 3/10

answer hasownproperty.call

related Object.hasOwnProperty.call

related hasOwnProperty.call js

hasownproperty.call

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var foo = {
  hasOwnProperty: function() {
    return false;
  },
  bar: 'Here be dragons'
};

foo.hasOwnProperty('bar'); // always returns false

// Use another Object's hasOwnProperty
// and call it with 'this' set to foo
({}).hasOwnProperty.call(foo, 'bar'); // true

// It's also possible to use the hasOwnProperty property
// from the Object prototype for this purpose
Object.prototype.hasOwnProperty.call(foo, 'bar'); // true

Popularity 8/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript

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Contributed on Apr 27 2020

Demolition

0 Answers Avg Quality 2/10

Closely Related Answers

Object.hasOwnProperty.call

Comment

const data = {
	a: 'a value'
}
// esnext, esm valid
const hasA = Object.hasOwnProperty.call(data, 'a'); // true
// browser, vanillajs, esnext, esm, commonjs
const hasA = data.hasOwnProperty('a'); // true
// browser, vanillajs, esnext, esm, commonjs
const hasA = 'a' in data; // true
// coffescript, browser, vanillajs, esnext, esm, commonjs
if (data.a)
  doYourLogicOrFunction()

Popularity 10/10 Helpfulness 7/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Apr 13 2022

L3n4r0x

0 Answers Avg Quality 2/10

hasOwnProperty.call js

Comment

-1

var foo = {
  hasOwnProperty: function() {
    return false;
  },
  bar: 'I belong to foo'
};

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Aug 18 2020

Dull Deer

0 Answers Avg Quality 2/10

hasownproperty.call

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hasOwnProperty.call js

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