bootstrap插件treeview实现全选父节点下所有子节点和反选功能

时间:2020-05-16 Rain 人气:0

项目需要实现权限管理，使用前端框架bootstrap，所以就直接选用了bootstrap的treeview扩展插件。先上图：

选中父节点时，父节点下所有子节点也都全部选中，看代码

1、HTML代码

<h2>TreeView Checkable</h2>
<div id="treeview-checkable"></div>

2、Json数据

function getTvStateData() {
   var defaultData = [
    {
     text: 'Parent 1',
     href: '#parent1',
     tags: ['4'],
     state: {
      checked: true
     },
     nodes: [
      {
       text: 'Child 1',
       href: '#child1',
       tags: ['2'],
       nodes: [
        {
         text: 'Grandchild 1',
         href: '#grandchild1',
         tags: ['0']
        },
        {
         text: 'Grandchild 2',
         href: '#grandchild2',
         tags: ['0']
        }
       ]
      },
      {
       text: 'Child 2',
       href: '#child2',
       tags: ['0']
      }
     ]
    },
    {
     text: 'Parent 2',
     href: '#parent2',
     tags: ['0'],
     nodes: [
      {
       text: 'Child 1',
       href: '#child1',
       tags: ['2'],
       nodes: [
        {
         text: 'Grandchild 1',
         href: '#grandchild1',
         tags: ['0']
        },
        {
         text: 'Grandchild 2',
         href: '#grandchild2',
         tags: ['0']
        }
       ]
      },
      {
       text: 'Child 2',
       href: '#child2',
       tags: ['0']
      }
     ]
    },
    {
     text: 'Parent 3',
     href: '#parent3'
    },
    {
     text: 'Parent 4',
     href: '#parent4',
     tags: ['0']
    },
    {
     text: 'Parent 5',
     href: '#parent5',
     tags: ['0']
    }
   ];

   return defaultData;
  }

3、JS数据绑定，加载TreeView

$(function() {
 var $checkableTree = $('#treeview-checkable')
    .treeview({
     data: getTvStateData(), //数据
     showIcon: false,
     showCheckbox: true,
     levels: 1,
     onNodeChecked: function(event, node) { //选中节点
      var selectNodes = getChildNodeIdArr(node); //获取所有子节点
      if (selectNodes) { //子节点不为空，则选中所有子节点
       $('#treeview-checkable').treeview('checkNode', [selectNodes, { silent: true }]);
      }
      var parentNode = $("#treeview-checkable").treeview("getNode", node.parentId);
      setParentNodeCheck(node);
     },
     onNodeUnchecked: function(event, node) { //取消选中节点
      var selectNodes = getChildNodeIdArr(node); //获取所有子节点
      if (selectNodes) { //子节点不为空，则取消选中所有子节点
       $('#treeview-checkable').treeview('uncheckNode', [selectNodes, { silent: true }]);
      }
     },
     onNodeExpanded:
      function(event, data) {
       if (data.nodes === undefined || data.nodes === null) {
        
       } else if (data.tags[0] === "2") {
        alert("Tags 2");
       } else {
        alert("1111");
       }
      }
    });
 });

4、选中/取消选中父节点时，选中/取消选中所有子节点，以及选中所有子节点时，选中父节点

function getChildNodeIdArr(node) {
   var ts = [];
   if (node.nodes) {
    for (x in node.nodes) {
     ts.push(node.nodes[x].nodeId);
     if (node.nodes[x].nodes) {
      var getNodeDieDai = getChildNodeIdArr(node.nodes[x]);
      for (j in getNodeDieDai) {
       ts.push(getNodeDieDai[j]);
      }
     }
    }
   } else {
    ts.push(node.nodeId);
   }
   return ts;
  }

  function setParentNodeCheck(node) {
   var parentNode = $("#treeview-checkable").treeview("getNode", node.parentId);
   if (parentNode.nodes) {
    var checkedCount = 0;
    for (x in parentNode.nodes) {
     if (parentNode.nodes[x].state.checked) {
      checkedCount ++;
     } else {
      break;
     }
    }
    if (checkedCount === parentNode.nodes.length) {
     $("#treeview-checkable").treeview("checkNode", parentNode.nodeId);
     setParentNodeCheck(parentNode);
    }
   }
  }

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