|  | @@ -422,7 +422,7 @@ var idTree = {
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				|  |  |              }
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				|  |  |          })();
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				|  |  |          Tree.prototype.newNodeID = function () {
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				|  |  | -            if (this.rangeNodeID() === -1) {
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				|  |  | +            if (this.rangeNodeID() == -1) {
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				|  |  |                  return this.maxNodeID() + 1;
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				|  |  |              } else {
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				|  |  |                  if (this.maxNodeID() < this.rangeNodeID()) {
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				|  | @@ -460,7 +460,7 @@ var idTree = {
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				|  |  |              // set parent by pid, set nextSibling by nid
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				|  |  |              datas.forEach(function (data) {
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				|  |  |                  node = that.nodes[prefix + data[that.setting.id]];
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				|  |  | -                if (data[that.setting.pid] === that.setting.rootId) {
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				|  |  | +                if (data[that.setting.pid] == that.setting.rootId) {
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				|  |  |                      that.roots.push(node);
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				|  |  |                  } else {
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				|  |  |                      parent = that.nodes[prefix + data[that.setting.pid]];
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				|  | @@ -500,8 +500,8 @@ var idTree = {
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				|  |  |  
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				|  |  |          Tree.prototype.insert = function (parentID, nextSiblingID) {
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				|  |  |              var newID = this.newNodeID(), node = null, data = {};
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				|  |  | -            var parent = parentID === -1 ? null : this.nodes[this.prefix + parentID];
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				|  |  | -            var nextSibling = nextSiblingID === -1 ? null: this.nodes[this.prefix + nextSiblingID];
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				|  |  | +            var parent = parentID == -1 ? null : this.nodes[this.prefix + parentID];
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				|  |  | +            var nextSibling = nextSiblingID == -1 ? null: this.nodes[this.prefix + nextSiblingID];
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				|  |  |              if (newID !== -1) {
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				|  |  |                  data = {};
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				|  |  |                  data[this.setting.id] = newID;
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				|  | @@ -522,8 +522,8 @@ var idTree = {
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				|  |  |          Tree.prototype.getInsertData = function (parentID, nextSiblingID, uid = null) {
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				|  |  |              var data = [];
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				|  |  |              var newID = uid ? uuid.v1() : this.newNodeID();
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				|  |  | -            var parent = parentID === -1 ? null : this.nodes[this.prefix + parentID];
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				|  |  | -            var nextSibling = nextSiblingID === -1 ? null: this.nodes[this.prefix + nextSiblingID];
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				|  |  | +            var parent = parentID == -1 ? null : this.nodes[this.prefix + parentID];
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				|  |  | +            var nextSibling = nextSiblingID == -1 ? null: this.nodes[this.prefix + nextSiblingID];
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				|  |  |              if (newID != -1) {
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				|  |  |                  data.push({type: 'new', data: this.getDataTemplate(newID, parent ? parent.getID() : this.setting.rootId, nextSibling ? nextSibling.getID() : this.setting.rootId)});
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				|  |  |  
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				|  | @@ -538,8 +538,8 @@ var idTree = {
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				|  |  |              return data;
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				|  |  |          };
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				|  |  |          Tree.prototype.insertByData = function (data, parentID, nextSiblingID, uid = null) {
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				|  |  | -            var parent = parentID === -1 ? null : this.nodes[this.prefix + parentID];
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				|  |  | -            var nextSibling = nextSiblingID === -1 ? null : this.nodes[this.prefix + nextSiblingID];
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				|  |  | +            var parent = parentID == -1 ? null : this.nodes[this.prefix + parentID];
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				|  |  | +            var nextSibling = nextSiblingID == -1 ? null : this.nodes[this.prefix + nextSiblingID];
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				|  |  |              var node = this.nodes[this.prefix + data[this.setting.id]];
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				|  |  |              if (node) {
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				|  |  |                  return node;
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