$("#reversecheckallmachines").on("change", function () {
var checkedNodes = [];
var uncheckedNodes = [];

                 var nodes = $tree.jstree("get\_json", null, { flat: true });  
                 for (var i = 0; i < nodes.length; i++) {  
                     if (nodes\[i\].state.selected) {  
                         var findNode = nodes.find(x => x.parent === nodes\[i\].id);  
                         if (!findNode) {  
                             checkedNodes.push(nodes\[i\]);  
                         }  
                     }  
                     else {  
                         var fnode = nodes.find(x => x.parent === nodes\[i\].id);  
                         if (!fnode) {  
                             uncheckedNodes.push(nodes\[i\]);  
                         }  
                     }  
                 }  
                 $tree.jstree("uncheck\_node", checkedNodes);  
                 $tree.jstree("check\_node", uncheckedNodes);  
             });