The node.links() function returns an array of links to the children of the node object, each link object has a source and a target field that hold references to child nodes.
Syntax:
node.links();
Parameters: This method does not accept any parameters.
Return Values: This method returns an array of links to the children of the node object.
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.links();         console.log(a);         for (i=0;i<a.length;i++){             console.log(a[i].source.children)         }     </script> </body>   </html> |
Output:
Example 2: Root containing no children return empty links array.
HTML
<!DOCTYPE html> <html> Â Â <head> Â Â Â Â <meta charset="utf-8"> Â Â Â Â Â Â <script src= Â Â Â Â </script> </head> Â Â <body> Â Â Â Â <script> Â Â Â Â Â Â Â Â var data = {"name":"GFG1"} Â Â Â Â Â Â Â Â Â Â var root = d3.hierarchy(data); Â Â Â Â Â Â Â Â Â Â console.log(root.links()); Â Â Â Â </script> </body> Â Â </html> |
Output:
Â
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