JavaScript Map get() method is used to get the value from the map object using a key. This method returns the value of the specified key of an element from a Map object.
obj.get(key) Note: It returns undefined if the key can’t be found in the Map object.
JavaScript Map get()
Simple example code.
<!DOCTYPE html>
<html>
<body>
<script >
var map = new Map();
map.set(1,"ABC");
map.set(2,"XYZ");
map.set(3,"PQR");
console.log(map.get(1));
console.log(map.get(2));
console.log(map.get(3));
</script>
</body>
</html>Output:
More example
const map1 = new Map();
map1.set('bar', 'foo');
console.log(map1.get('bar'));// "foo"
console.log(map1.get('baz')); // undefinedUsing get() to retrieve a reference to an object
const arr = [];
const myMap = new Map();
myMap.set('bar', arr);
myMap.get('bar').push('foo');
console.log(arr); // ["foo"]
console.log(myMap.get('bar')); // ["foo"]
Do comment if you have any doubts or suggestions on this JS map method tutorial.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version