Map objects are collections of key-value pairs. A key in the Map may only occur once; it is unique in the Map's collection. A Map object is iterated by key-value pairs — a for...of loop returns a 2-member array of [key, value] for each iteration. Iteration happens in insertion order, which corresponds to the order in which each...
Russian
French
Spanish
Portuguese
Deutsch
Turkish
Dutch
Italiano
Arabic
Romaian
Portuguese (Brazil)
Greek
