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edited May 2, 2021 at 13:26This is not a Map object. It's just a regular object. So, use Object.entries and then use map on the key value pair:
const map = {"a": 1, "b": 2, "c": 3};const mapped = Object.entries(map).map(([k,v]) => `${k}_${v}`);console.log(mapped);Object.entries returns:
[["a",1],["b",2],["c",3]]Then loop through each of those inner arrays and create the string using template literals
If you have a Map object, use Array.from(map) to get the entries of the map and use the second parameter of Array.from to go over each entry and create the desired string
Content Under CC-BY-SA license How to map key/value pairs of a "map" in JavaScript?
WEBFeb 12, 2019 — To get its properties as key/value pairs, you can use Object.entries, which you can then apply map to: map = Object.entries(map).map(([key, value]) => key + "_" + …
Map - JavaScript | MDN - MDN Web Docs
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The specification requires maps to be implemented "that, on average, provide access times that are sublinear on the number of elements in the collection". Therefore, it could be represented internally as a hash table (with O(1) lookup), a search tree (with O(log(N)) lookup), or any other …
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javascript - How to iterate a Map() object? - Stack Overflow
WEBOct 27, 2023 — for (const [key, value] of myMap.entries()) { console.log(key, value); } As @Nina Scholz said, you can use forEach on the Map prototype ( doc MDN ): …
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WEBAug 24, 2023 — The keys () method of Map instances returns a new map iterator object that contains the keys for each element in this map in insertion order.
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WEBThe keys() method returns an iterator object with the keys in a map: The keys() method does not change the original met.
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WEBJavaScript Maps. A Map holds key-value pairs where the keys can be any datatype. A Map remembers the original insertion order of the keys.
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