javascript - 自定义js树上的图标

Question

我想添加一个用于关闭和展开的文件夹打开关闭图标和一个用于叶节点的叶图标。

请帮忙

编辑:

尝试添加类型插件，但似乎不起作用。

  var data = {
      'core': {
          'data': dataObj
      },
      "search": {
          "case_insensitive": true,
          "show_only_matches": true
      },
      "plugins": ["search", "themes"]
  };
  $('#jstree_category').jstree(data);
  $('#jstree_category').on("loaded.jstree", function (e, data) {
      _this.treeLoaded = true;
      if (!_this.dataFetched) {
          return;
      }
  });
   // bind customize icon change function in jsTree open_node event.
  $('#jstree_category').on('open_node.jstree', function (e, data) {
      $('#' + data.node.id).find('i.jstree-icon.jstree-themeicon').first()
          .removeClass('glyphicon glyphicon-folder-close').addClass('glyphicon glyphicon-folder-open');
      $('#' + data.node.id).find('i.jstree-icon.jstree-themeicon')
          .addClass('glyphicon glyphicon-leaf');
  });
   // bind customize icon change function in jsTree close_node event.
  $('#jstree_category').on('close_node.jstree', function (e, data) {
      $('#' + data.node.id).find('i.jstree-icon.jstree-themeicon').first()
          .removeClass('glyphicon glyphicon-folder-open').addClass('glyphicon glyphicon-folder-close');
      $('#' + data.node.id).find('i.jstree-icon.jstree-themeicon')
          .addClass('glyphicon glyphicon-leaf');
  });

Answer 1

这是为你工作的 fiddle 。您应该在 JSON dataObj 中提及节点的类型。

var jsonData = [
  {
    id  : 1,
    text : "Folder 1",
    type: "root",
    state : {
      selected  : false
    },
    children    : [
      {
        id  : 2,
        text : "Sub Folder 1",
        type: "child",
        state : {
          selected  : false
        },  
      },
      {
        id  : 3,
        text : "Sub Folder 2",
        type: "child",
        state : {
          selected  : false
        },  
      }
    ]
  }, 
  {
    id: 4,
    text : "Folder 2",
    type: "root",
    state : {
      selected : true
    },
    children : []
  }
];

$('#jstree-tree')
  .jstree({
  core: {
    data: jsonData
  },
  types: {
    "root": {
      "icon" : "glyphicon glyphicon-plus"
    },
    "child": {
      "icon" : "glyphicon glyphicon-leaf"
    },
    "default" : {
    }
  },
  plugins: ["search", "themes", "types"]
}).on('open_node.jstree', function (e, data) { data.instance.set_icon(data.node, "glyphicon glyphicon-minus"); 
}).on('close_node.jstree', function (e, data) { data.instance.set_icon(data.node, "glyphicon glyphicon-plus"); });

JSFiddle