Objects/maps
An object/map is a set of key value properties.
Defining a new map
{"greeting": "hello"}
Creating a map using existing values
{"foo": "bar", "name": "Tom"}. // Just so you can see the input
{
"baz": foo,
name // Shorthand for "name": name
}
Adding new fields to a map
We can utilise the spread ...
operator here.
Set "name" = "Tom"
regardless of what is in the map already:
{
$this...,
"name": "Tom"
}
Set "name" = "Tom"
only if it doesn't already exist in the map:
{
"name": "Tom",
$this...
}
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