CODEWITHSUNDEEP
javascriptobject
Steve Kim
Steve Kim

Reputation: 5601

js remove object property using array shift

I have an array and object in js:

var number = [23,234,654,3234];
var detail = {
              23:"John",
              234:"Doe",
              654:50,
              3234:"blue"
            };

Then using var remove = number.shift(), I can get the first value in the array (in this case, 23) and remove it from the array.

I am trying to remove the corresponding property from the object: In this case, it will be 23:"John".

I tried delete detail.remove; but no luck.

Any suggestions?

Thanks

Upvotes: 1

Views: 315

Answers (2)

Pranav C Balan
Pranav C Balan

Reputation: 115242

According to MDN the delete operator is followed by an expression that should evaluate to a property reference. Your example delete detail.remove is in fact correct.

However, if you want to access a property programmatically (or numbered property, such as 23), use bracket notation.

// with variable
delete detail[remove];

// with string or integer
delete detail[23];

Upvotes: 1

Luke Lee
Luke Lee

Reputation: 36

you can't use variable in obj.variable, the right way is obj[variable].

So try this instead:

 delete detail[remove];

Upvotes: 1

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