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 ?
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3 Answers
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/
Comments
How do I delete an object key and how to delete an object key value ?
Use the delete operator to remove a property from an Object.
delete object.key
Removing the property will remove its associated value (or at least mark it for garbage collection).
3 Comments
Filippo oretti
and what if i want to delete only the property value ?
alex
@Ispuk You could assign to it
undefined or null.
user278064
@Ispuk If you want to delete only its value, you could set it to null. e.g.
object.key = null.you can use delete object[key]. This will delete both the key and value