Revisions to Check if a value is an object in JavaScript

http://devdocs.io/javascript/global_objects/array/isarray

I'm fond of simply:

function isObject (item) {
  return (typeof item === "object" && !Array.isArray(item) && item !== null);
}

If the item is a JS object, and it's not a JS array, and it's not null…if all three prove true, return true. If any of the three conditions fails, the && test will short-circuit and false will be returned. The null test can be omitted if desired.

DOCS:

http://devdocs.io/javascript/global_objects/array/isarray

I'm fond of simply:

function isObject (item) {
  return (typeof item === "object" && !Array.isArray(item) && item !== null);
}

If the item is a JS object, and it's not a JS array, and it's not null…if all three prove true, return true. If any of the three conditions fails, the && test will short-circuit and false will be returned. The null test can be omitted if desired (depending on how you use null).

DOCS:

http://devdocs.io/javascript/global_objects/array/isarray

deleted 6 characters in body

Source Link

edited Apr 24, 2015 at 3:57

5260452

11.7k
8
58
65

I'm fond of simply:

varfunction isObject = function(item) {
  return (typeof item === "object" && !Array.isArray(item) && item !== null);
};

If the item is a JS object, and it's not a JS array, and it's not null…if all three prove true, return true. If any of the three conditions fails, the && test will short-circuit and false will be returned. Omit theThe null test can be omitted if desired.

DOCS:

http://devdocs.io/javascript/global_objects/array/isarray

I'm fond of simply:

var isObject = function(item) {
  return (typeof item === "object" && !Array.isArray(item) && item !== null);
};

If the item is a JS object, and it's not a JS array, and it's not null…if all three prove true, return true. If any of the three conditions fails, the && test will short-circuit and false will be returned. Omit the null test if desired.

DOCS:

http://devdocs.io/javascript/global_objects/array/isarray

I'm fond of simply:

function isObject (item) {
  return (typeof item === "object" && !Array.isArray(item) && item !== null);
}

If the item is a JS object, and it's not a JS array, and it's not null…if all three prove true, return true. If any of the three conditions fails, the && test will short-circuit and false will be returned. The null test can be omitted if desired.

DOCS:

http://devdocs.io/javascript/global_objects/array/isarray

Source Link

answered Sep 7, 2014 at 22:49

5260452

11.7k
8
58
65

I'm fond of simply:

var isObject = function(item) {
  return (typeof item === "object" && !Array.isArray(item) && item !== null);
};

If the item is a JS object, and it's not a JS array, and it's not null…if all three prove true, return true. If any of the three conditions fails, the && test will short-circuit and false will be returned. Omit the null test if desired.

DOCS:

http://devdocs.io/javascript/global_objects/array/isarray