map key value javascript code example
Example 1: append to map javascript
var myMap = {};
myMap[newKey] = newValue;
// ...
// Another method
var myMap = new Map()
myMap.set("key0","value")
// ...
myMap.has("key1"); // evaluates to false, assuming key1 wasn't set
Example 2: javascript map
array.map((item) => {
return item * 2
} // an example that will map through a a list of items and return a new array with the item multiplied by 2