JavaScript Object Reference
JS: Map.prototype.size
By Xah Lee. Date:
2017-08-14
. Last updated:
2024-04-09
.
New in JS2015.
mapObj
.size
Return the total count of entries in
mapObj
.
(
new
Map
([[3,
"n3"
], [4,
"n4"
]])).
size
=== 2
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