bootstrap插件treeview实现全选父节点下所有子节点和反选功能

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);
    }
   }
  }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。