jquery - Click event for collaps and expand in D3 is not working -


i working on project in have show alot of information show in form of tree. have chosen d3.js awesome library purpose. facing problem , not resolve it. have observed many questions on stackoverflow here , here alse

i have following javascript code

var url = "/home/showtree?q="+query;     var treedt = [];     $('#result').show();     $.get(url, null, function (data) {          $.each(data, function (index, value) {             var d = { "name": "", "parent": "" }             d.name = value.name;             d.parent = value.parent;             treedt.push(d);         });         $('#result').empty();         process();     });     function process() {         var datamap = treedt.reduce(function (map, node) {             map[node.name] = node;             return map;         }, {});         var treedata = [];         treedt.foreach(function (node) {             // add parent             var parent = datamap[node.parent];             if (parent) {                 // create child array if doesn't exist                 (parent.children || (parent.children = []))                  // add node child array                  .push(node);             } else {                 // parent null or missing                 treedata.push(node);             }         });         // ************** generate tree diagram  *****************         var margin = { top: 20, right: 120, bottom: 20, left: 120 },          width = 3000 - margin.right - margin.left,          height = 2000 - margin.top - margin.bottom;          // misc. variables         var = 0;         var duration = 750;         var tree = d3.layout.tree()             .separation(function (a, b) { return ((a.parent == root) && (b.parent == root)) ? 30 : 35; })          .size([height, width]);         var diagonal = d3.svg.diagonal()          .projection(function (d) { return [d.y, d.x]; });         var svg = d3.select("#result").append("svg")          .attr("width", width + margin.right + margin.left)          .attr("height", height + margin.top + margin.bottom)           .append("g")          .attr("transform", "translate(" + margin.left + "," + margin.top + ")");           root = treedata[0];         function collapse(d) {             if (d.children) {                 d._children = d.children;                 d._children.foreach(collapse);                 d.children = null;             }         }          //root.children.foreach(collapse);         update(root);         function click(d) {             var concept=d.name;             var p = d.parent;             while (p != null) {                 concept += " " + p.name;                 p = p.parent;             }             //var temp = '/home/showdata?id=' + concept;             //window.open(temp,'_blank');             if (d.children) {                 d._children = d.children;                 d.children = null;             } else {                 d.children = d._children;                 d._children = null;             }             update(d);         }         function update(source) {             // compute new tree layout.             var nodes = tree.nodes(root).reverse(),              links = tree.links(nodes);             // normalize fixed-depth.             nodes.foreach(function (d) { d.y = d.depth * 100; });             // declare nodes…             var node = svg.selectall("g.node")              .data(nodes, function (d) { return d.id || (d.id = ++i); });             // enter nodes.             var nodeenter = node.enter().append("g")              .attr("class", "node")              .attr("transform", function (d) {                  return "translate(" + d.y + "," + d.x + ")";              }).on("click", click);             nodeenter.append("circle")              .attr("r", 4)              .style("fill", "#f0f");             nodeenter.append("text")              .attr("x", function (d) {                  return d.children || d._children ? -18 : 18;              })              .attr("dy", ".25em")              .attr("text-anchor", function (d) {                  return d.children || d._children ? "end" : "start";              })    //             .attr("dy", ".35em")    //.attr("text-anchor", "middle")              .text(function (d) { return d.name; })              .style("fill-opacity", 1);             // declare links…             var link = svg.selectall("path.link")              .data(links, function (d) { return d.target.id; });             // enter links.             link.enter().insert("path", "g")              .attr("class", "link")              .attr("d", diagonal);         }     }     return false; }

and click event nothing. want collaps sibling nodes of clicked node. please suggest worried


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