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
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