The map.values() function in D3.js used to return an array of values for every entry in the created map. The order of the returned values are arbitrary.
Syntax:
d3.map.values()
Parameters: This function does not accept any parameters.
Return Value: This function returns an array of values for every entry in the created map. Order of those returned values are arbitrary.
Below programs illustrate the d3.map.values() function in D3.js:
Example 1:
<!DOCTYPE html> <html> <head> <title> d3.map.values() Function</title>
</head> <body> <script>
// Creating a map
var map = d3.map({"Ram": 5, "Geeks": 10, "gfg": 15});
// Calling the map.values() function
A = map.values();
// Getting an array of values for
// every entry in the map.
console.log(A);
</script>
</body> </html> |
Output:
[5, 10, 15]
Example 2:
<!DOCTYPE html> <html> <head> <title> d3.map.values() Function</title>
</head> <body> <script>
// Creating some maps
var map1 = d3.map({"Ram": 5});
var map2 = d3.map({"Geeks": 10});
var map3 = d3.map({"Ram": 5, "Geeks": 10});
var map4 = d3.map();
// Calling the map.values() function
A = map1.values();
B = map2.values();
C = map3.values();
D = map4.values();
// Getting an array of values for
// every entry in the map.
console.log(A);
console.log(B);
console.log(C);
console.log(D);
</script>
</body> </html> |
Output:
[5] [10] [5, 10] []
Ref: https://devdocs.io/d3~5/d3-collection#map_values