firefox jquery上的递归错误太多

Question

当我在Firefox上运行应用程序时，我在下面的一段代码中得到了太多的递归错误。该代码有望在浏览器中创建图形树结构。该方法将Json作为输入，遍历键并检查对应于该键的值是否为“Leaf”。如果值为“Leaf”，则将其显示在浏览器上并移至下一个键，否则它将递归遍历子节点，直到达到“Leaf”。所有子节点都显示在浏览器上：

function createmasterJson(data) {
    var json = '';
    for (var index in data) {
        var child = data[index];
        if (child == 'Leaf') {
            json = json + createLeafNode(index);
        } else {
            if (child.length) {
                for (var i = 0; i < child.length; i++) {
                    json = json + createNonLeafNode(index, createmasterJson(child[i]));
                }
            } else {
                json = json + createLeafNode(index);
            }
        }
    }
    return json;
}

function createLeafNode(index){
    return '{ "attributes": { "id" :"' + index + '_' + Math.random() +'"}, "data": "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; '+ index +'" },';
}

function createNonLeafNode(index, child){
    return '{ "attributes": { "id" :"' + index + '_' + Math.random() +'"}, "data": "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; '+ index +'" ,"state": "closed", "children" : ['+child.substring(0, child.length - 1)+']},';
}