The node.ancestors() function returns an array of ancestors nodes, starting with the given node, then followed by each parent up to the root.
Syntax:
node.ancestors();
Parameters: This method takes no parameters.
Return Values: This method returns an array of ancestors nodes.
Example 1:
HTML
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src= </script> </head> <body> <script> var data = { "name":"neveropen", "about":"Computer Science Portal", "children":[ {"name":"GFG1"}, {"name":"GFG2"}, {"name":"GFG3"} ] } var root = d3.hierarchy(data); a=root.ancestors(); console.log(a); </script> </body> </html> |
Output:
Example 2:
HTML
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src= </script> </head> <body> <script> var data = {"name":"GFG1"} var root = d3.hierarchy(data); console.log(root.ancestors()); </script> </body> </html> |
Output:

