The D3.js node.depth property returns the length of the path from the node up to the root.
Syntax:
node.depth
Return Value: This property returns the length of the path from the node up to the root.
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"}, {"name":"GFG4"} ] } var root = d3.hierarchy(data); console.log(root.children[0].depth); </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.depth); </script> </body> </html> |
Output:
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