javascript - 类别子类别树问题 javascript

Question

我有一棵树。从图片中可以看到，有类别和子类别。我希望类别有下线，但子类别不会。你能帮我怎么做吗？来自这个 JavaScript？

Answer 1

不是答案，只是尝试格式化以上内容 链接在这里:http://destroydrop.com/javascripts/tree/

/*--------------------------------------------------|
| dTree 2.05 | www.destroydrop.com/javascript/tree/ |
|---------------------------------------------------|
| Copyright (c) 2002-2003 Geir Landrö |
| |
| This script can be used freely as long as all |
| copyright messages are intact. |
| |
| Updated: 17.04.2003 |
|--------------------------------------------------*/
// Node object
function Node(id, pid, name, url, rel, target, icon, iconOpen, open) {
  this.id = id;
  this.pid = pid;
  this.name = name;
  this.url = url;
  this.rel = rel;
  this.target = target;
  this.icon = icon;
  this.iconOpen = iconOpen;
  this._io = open || false;
  this._is = false;
  this._ls = false;
  this._hc = false;
  this._ai = 0;
  this._p;
};
// Tree object
function dTree(objName) {
  this.config = {
      target                  : null,
      folderLinks         : true,
      useSelection        : true,
      useCookies          : true,
      useLines                : true,
      useIcons                : true,
      useStatusText       : false,
      closeSameLevel  : false,
      inOrder                 : false
  }
  this.icon = {
      root                : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      folder              : 'http://wishberry.in/app/webroot/images/userend_images/img/folder.gif',
      folderOpen          : 'http://wishberry.in/app/webroot/images/userend_images/img/folderopen.gif',
      node                : 'http://wishberry.in/app/webroot/images/userend_images/img/page.gif',
      empty               : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      line                : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      join                : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      joinBottom          : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      plus                : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      plusBottom          : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      minus               : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      minusBottom         : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      nlPlus              : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif',
      nlMinus             : 'http://wishberry.in/app/webroot/images/userend_images/img/empty.gif'
  };
  this.obj = objName;
  this.aNodes = [];
  this.aIndent = [];
  this.root = new Node(-1);
  this.selectedNode = null;
  this.selectedFound = false;
  this.completed = false;
};
// Adds a new node to the node array
dTree.prototype.add = function(id, pid, name, url, rel, target, icon, iconOpen, open) {
  this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, rel, target, icon, iconOpen, open);
};
// Open/close all nodes
dTree.prototype.openAll = function() {
  this.oAll(true);
};
dTree.prototype.closeAll = function() {
  this.oAll(false);
};
// Outputs the tree to the page
dTree.prototype.toString = function() {
  var str = '<div class="dtree">\n';
  if (document.getElementById) {
      if (this.config.useCookies) this.selectedNode = this.getSelected();
      str += this.addNode(this.root);
  } else str += 'Browser not supported.';
  str += '</div>';
  if (!this.selectedFound) this.selectedNode = null;
  this.completed = true;
  return str;
};
// Creates the tree structure
dTree.prototype.addNode = function(pNode) {
  var str = '';
  var n=0;
  if (this.config.inOrder) n = pNode._ai;
  for (n; n<this.aNodes.length; n++) {
      if (this.aNodes[n].pid == pNode.id) {
          var cn = this.aNodes[n];
          cn._p = pNode;
          cn._ai = n;
          this.setCS(cn);
          if (!cn.target && this.config.target) cn.target = this.config.target;
          if (cn._hc && !cn._io && this.config.useCookies) cn._io = this.isOpen(cn.id);
          if (!this.config.folderLinks && cn._hc) cn.url = null;
          if (this.config.useSelection && cn.id == this.selectedNode && !this.selectedFound) {
                  cn._is = true;
                  this.selectedNode = n;
                  this.selectedFound = true;
          }
          str += this.node(cn, n);
          if (cn._ls) break;
      }
  }
  return str;
};
// Creates the node icon, url and text
dTree.prototype.node = function(node, nodeId) {
  var str = '<div class="dTreeNode">' + this.indent(node, nodeId);
  if (this.config.useIcons) {
      if (!node.icon) node.icon = (this.root.id == node.pid) ? this.icon.root : ((node._hc) ? this.icon.folder : this.icon.node);
      if (!node.iconOpen) node.iconOpen = (node._hc) ? this.icon.folderOpen : this.icon.node;
      if (this.root.id == node.pid) {
          node.icon = this.icon.root;
          node.iconOpen = this.icon.root;
      }
      str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" />';
  }
  if (node.url) {
      str += '<a id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '" href="' + node.url + '"';
      if (node.rel) str += ' rel="' + node.rel + '"';
      if (node.target) str += ' target="' + node.target + '"';
      if (this.config.useStatusText) str += ' onmouseover="window.status=\'' + node.name + '\';return true;" onmouseout="window.status=\'\';return true;" ';
      if (this.config.useSelection && ((node._hc && this.config.folderLinks) || !node._hc))
          str += ' onclick="javascript: ' + this.obj + '.s(' + nodeId + ');"';
      str += '>';
  }
  else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id)
      str += '<a rel="' + node.rel + '" href="javascript: ' + this.obj + '.o(' + nodeId + ');" class="node">';
  str += node.name;
  if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';
  str += '</div>';
  if (node._hc) {
      str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';">';
      str += this.addNode(node);
      str += '</div>';
  }
  this.aIndent.pop();
  return str;
};
// Adds the empty and line icons
dTree.prototype.indent = function(node, nodeId) {
  var str = '';
  if (this.root.id != node.pid) {
      for (var n=0; n<this.aIndent.length; n++)
          str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line : this.icon.empty ) + '" alt="" />';
      (node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);
      if (node._hc) {
          str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');"><img id="j' + this.obj + nodeId + '" src="';
          if (!this.config.useLines) str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus;
          else str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom : this.icon.minus) : ((node._ls && this.config.useLines) ? this.icon.plusBottom : this.icon.plus ) );
          str += '" alt="" /></a>';
      } else str += '<img src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom : this.icon.join ) : this.icon.empty) + '" alt="" />';
  }
  return str;
};
// Checks if a node has any children and if it is the last sibling
dTree.prototype.setCS = function(node) {
  var lastId;
  for (var n=0; n<this.aNodes.length; n++) {
      if (this.aNodes[n].pid == node.id) node._hc = true;
      if (this.aNodes[n].pid == node.pid) lastId = this.aNodes[n].id;
  }
  //if (lastId==node.id) node._ls = true;
};
// Returns the selected node
dTree.prototype.getSelected = function() {
  var sn = this.getCookie('cs' + this.obj);
  return (sn) ? sn : null;
};
// Highlights the selected node
dTree.prototype.s = function(id) {
  if (!this.config.useSelection) return;
  var cn = this.aNodes[id];
  if (cn._hc && !this.config.folderLinks) return;
  if (this.selectedNode != id) {
      if (this.selectedNode || this.selectedNode==0) {
          eOld = document.getElementById("s" + this.obj + this.selectedNode);
          eOld.className = "node";
      }
      eNew = document.getElementById("s" + this.obj + id);
      eNew.className = "nodeSel";
      this.selectedNode = id;
      if (this.config.useCookies) this.setCookie('cs' + this.obj, cn.id);
  }
};
// Toggle Open or close
dTree.prototype.o = function(id) {
  var cn = this.aNodes[id];
  this.nodeStatus(!cn._io, id, cn._ls);
  cn._io = !cn._io;
  if (this.config.closeSameLevel) this.closeLevel(cn);
  if (this.config.useCookies) this.updateCookie();
};
// Open or close all nodes
dTree.prototype.oAll = function(status) {
  for (var n=0; n<this.aNodes.length; n++) {
      if (this.aNodes[n]._hc && this.aNodes[n].pid != this.root.id) {
          this.nodeStatus(status, n, this.aNodes[n]._ls)
          this.aNodes[n]._io = status;
      }
  }
  if (this.config.useCookies) this.updateCookie();
};
// Opens the tree to a specific node
dTree.prototype.openTo = function(nId, bSelect, bFirst) {
  if (!bFirst) {
      for (var n=0; n<this.aNodes.length; n++) {
          if (this.aNodes[n].id == nId) {
              nId=n;
              break;
          }
      }
  }
  var cn=this.aNodes[nId];
  if (cn.pid==this.root.id || !cn._p) return;
  cn._io = true;
  cn._is = bSelect;
  if (this.completed && cn._hc) this.nodeStatus(true, cn._ai, cn._ls);
  if (this.completed && bSelect) this.s(cn._ai);
  else if (bSelect) this._sn=cn._ai;
  this.openTo(cn._p._ai, false, true);
};
// Closes all nodes on the same level as certain node
dTree.prototype.closeLevel = function(node) {
  for (var n=0; n<this.aNodes.length; n++) {
      if (this.aNodes[n].pid == node.pid && this.aNodes[n].id != node.id && this.aNodes[n]._hc) {
          this.nodeStatus(false, n, this.aNodes[n]._ls);
          this.aNodes[n]._io = false;
          this.closeAllChildren(this.aNodes[n]);
      }
  }
}
// Closes all children of a node
dTree.prototype.closeAllChildren = function(node) {
  for (var n=0; n<this.aNodes.length; n++) {
      if (this.aNodes[n].pid == node.id && this.aNodes[n]._hc) {
          if (this.aNodes[n]._io) this.nodeStatus(false, n, this.aNodes[n]._ls);
          this.aNodes[n]._io = false;
          this.closeAllChildren(this.aNodes[n]);      
      }
  }
}
// Change the status of a node(open or closed)
dTree.prototype.nodeStatus = function(status, id, bottom) {
  eDiv    = document.getElementById('d' + this.obj + id);
  eJoin   = document.getElementById('j' + this.obj + id);
  if (this.config.useIcons) {
      eIcon   = document.getElementById('i' + this.obj + id);
      eIcon.src = (status) ? this.aNodes[id].iconOpen : this.aNodes[id].icon;
  }
  eJoin.src = (this.config.useLines)?
  ((status)?((bottom)?this.icon.minusBottom:this.icon.minus):((bottom)?this.icon.plusBottom:this.icon.plus)):
  ((status)?this.icon.nlMinus:this.icon.nlPlus);
  eDiv.style.display = (status) ? 'block': 'none';
};
// [Cookie] Clears a cookie
dTree.prototype.clearCookie = function() {
  var now = new Date();
  var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24);
  this.setCookie('co'+this.obj, 'cookieValue', yesterday);
  this.setCookie('cs'+this.obj, 'cookieValue', yesterday);
};
// [Cookie] Sets value in a cookie
dTree.prototype.setCookie = function(cookieName, cookieValue, expires, path, domain, secure) {
  document.cookie =
      escape(cookieName) + '=' + escape(cookieValue)
      + (expires ? '; expires=' + expires.toGMTString() : '')
      + (path ? '; path=' + path : '')
      + (domain ? '; domain=' + domain : '')
      + (secure ? '; secure' : '');
  };
  // [Cookie] Gets a value from a cookie
  dTree.prototype.getCookie = function(cookieName) {
  var cookieValue = '';
  var posName = document.cookie.indexOf(escape(cookieName) + '=');
  if (posName != -1) {
      var posValue = posName + (escape(cookieName) + '=').length;
      var endPos = document.cookie.indexOf(';', posValue);
      if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue, endPos));
      else cookieValue = unescape(document.cookie.substring(posValue));
  }
  return (cookieValue);
};
// [Cookie] Returns ids of open nodes as a string
dTree.prototype.updateCookie = function() {
  var str = '';
  for (var n=0; n<this.aNodes.length; n++) {
      if (this.aNodes[n]._io && this.aNodes[n].pid != this.root.id) {
          if (str) str += '.';
          str += this.aNodes[n].id;
      }
  }
  this.setCookie('co' + this.obj, str);
};
// [Cookie] Checks if a node id is in a cookie
dTree.prototype.isOpen = function(id) {
  var aOpen = this.getCookie('co' + this.obj).split('.');
  for (var n=0; n<aOpen.length; n++)
      if (aOpen[n] == id) return true;
  return false;
};
// If Push and pop is not implemented by the browser
if (!Array.prototype.push) {
  Array.prototype.push = function array_push() {
      for(var i=0;i<arguments.length;i++)
          this[this.length]=arguments[i];
      return this.length;
  }
};
if (!Array.prototype.pop) {
  Array.prototype.pop = function array_pop() {
      lastElement = this[this.length-1];
      this.length = Math.max(this.length-1,0);
      return lastElement;
  }
};