How to delete multiple properties from an Object using a single delete?

Question

I have the following object:

var myArr = {one:'1',two:'2',three:'3',four:'4',five:'5'};

I want to delete three properties from that object at once like:

delete myArr[one, three, five];

and it is failing. Do I have to perform an independent delete for each property like so:

delete myArr[one]; delete myArr[three]; delete myArr[five];

Thank you.

it's an object. There's no such thing as an "array object" in JavaScript. And yes, the delete statement can delete only one property at a time. — Pointy
– Pointy, Commented Nov 25, 2016 at 13:35
the question should be reworded with Delete multiple properties using a single delete. — Nina Scholz
– Nina Scholz, Commented Nov 25, 2016 at 13:39
Thank Pointy. For the purposes of distinguishing the two types of arrays in Javascript, i use 'array object' for object literal var arr={} and 'array' for anything var arr=[]. Thank you again! — NetizenKing
– NetizenKing, Commented Nov 25, 2016 at 13:41

Nina Scholz · Accepted Answer · 2018-06-10 18:00:32Z

12

You could use an array for the keys and iterate for deleting.

var object = { one: '1', two: '2', three: '3', four: '4', five: '5' };

['one', 'three', 'five'].forEach(function (k) {
    delete object[k];
});

console.log(object);

With Reflect.deleteProperty

var object = { one: '1', two: '2', three: '3', four: '4', five: '5' };

['one', 'three', 'five'].forEach(Reflect.deleteProperty.bind(null, object));

console.log(object);

edited Jun 10, 2018 at 18:00

answered Nov 25, 2016 at 13:35

Nina Scholz

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1 Comment

NetizenKing Over a year ago

although i like a variation of this answer like: for (var i = 0, a= obj.length; i < a; i++) { delete obj[i]);}, i must declare you 'javascript offensive'. Sleek things this class comes from sleek minds. Thanks a million!

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