javascript - d3 tree count all children -

i have d3 tree based on following...

http://bl.ocks.org/mbostock/1093025

how count of children? have tried counts rows in tree...

$(".tree_badge").text(tree.links(nodes).length); 

so in example should count children children orange coloured rows in tree (like in cluster, graph, etc).

thanks insight!

i had similar problem had grab of descriptions tree below particular node. answer in case , yours recursively descend tree , on way down. should this.

var count;  function count_leaves(node){     if(node.children){         //go through children         for(var = 0; i<node.children.length; i++){             //if current child in loop has children of own             //call recurse again on decend whole tree             if (node.children[i].children){                 count_leaves(node.children[i]);             }             //if not leaf count             else{                 count++;             }         }     } 

note: if want count of nodes below node , not ones @ end of tree, add count++ inside if else.