D3.js node.height Property

Last Updated : 23 Sep, 2020

The node.height property in D3.js returns the greatest distance from the given node to a descendant leaf node.

Syntax:

node.height

Return Value: This property returns the greatest distance from the given node to a descendant leaf node

Example 1: In this example, for the root node to the leaf node the greatest distance is 1, for the leaf node the greatest distance is 0.

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <meta charset="utf-8"> 
  
    <script src= 
        "https://d3js.org/d3.v5.min.js"> 
    </script> 
</head> 
  
<body> 
    <script> 
        var data = { 
            "name":"GeeksforGeeks",  
            "about":"Computer Science Portal", 
            "children":[ 
                {"name":"GFG1"}, 
                {"name":"GFG2"}, 
                {"name":"GFG3"}, 
                {"name":"GFG4"} 
            ] 
        } 
        var root = d3.hierarchy(data); 
        console.log("Height of root node is : ", 
                   root.height); 
        console.log("Height of first children node is : ", 
                   root.children[0].height); 
    </script> 
</body> 
  
</html>

Output:

Example 2: In this example, the hierarchy is not having any child so height is 0.

HTML

<!DOCTYPE html> 
<html> 
<head> 
    <meta charset="utf-8"> 
  
    <script src= 
        "https://d3js.org/d3.v5.min.js"> 
    </script> 
</head> 
  
<body> 
    <script> 
        var data = {"name":"GFG1"} 
  
        var root = d3.hierarchy(data); 
  
        console.log("Height of this node is :", 
                    root.height); 
    </script> 
</body> 
  
</html>