update map value javascript

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showing results for - "update map value javascript"
Lorenzo
17 Oct 2017
1var myMap = {};
2
3myMap[newKey] = newValue;
4
5// ...
6
7
8// Another method
9
10var myMap = new Map()
11myMap.set("key0","value")
12// ...
13myMap.has("key1"); // evaluates to false, assuming key1 wasn't set
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