The node.children property in D3.js returns an array of child nodes (null for leaf nodes and undefined for nodes having no child).
Syntax:
node.children
Return Value: This property returns an array of child nodes (null for leaf nodes and undefined for nodes having no child).
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":"GFG"}] } var root = d3.hierarchy(data); console.log(root.children); </script> </body> </html> |
Output:
Example 2: In this example, this method returns undefined as the root node has no child node.
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.children); </script> </body> </html> |
Output:
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