Question

I have this object:

object = {
   key:["1","2","3","4","5"],
   key2:["5","7","8","9"]
}

How do I delete an object key and how to delete an object key value ?

Answer 1

For deleteing a property from an object you can use

delete object.key

For deleting an item from the array, you could use many methods, one of which is to make use of jQuery’s grep method:

// removes "5" from the values
object.key2 = $.grep(object.key2,function(x) { return x != "5"});

Live examples: http://jsfiddle.net/rbREb/