easyui tree带checkbox实现单选的简单实例_javascript技巧

实例如下：

<ul id="regionTree"></ul>

$('#regionTree').tree({
      cascadeCheck: false,
      //onlyLeafCheck: true,
      checkbox: true,
      data: [{
        "id": 1,
        "text": "My Documents",
        "children": [{
          "id": 11,
          "text": "Photos",
          "state": "closed",
          "children": [{
            "id": 111,
            "text": "Friend"
          }, {
            "id": 112,
            "text": "Wife"
          }, {
            "id": 113,
            "text": "Company"
          }]
        }, {
          "id": 12,
          "text": "Program Files",
          "children": [{
            "id": 121,
            "text": "Intel"
          }, {
            "id": 122,
            "text": "Java",
            "attributes": {
              "p1": "Custom Attribute1",
              "p2": "Custom Attribute2"
            }
          }, {
            "id": 123,
            "text": "Microsoft Office"
          }, {
            "id": 124,
            "text": "Games",
            "checked": true
          }]
        }, {
          "id": 13,
          "text": "index.html"
        }, {
          "id": 14,
          "text": "about.html"
        }, {
          "id": 15,
          "text": "welcome.html"
        }]
      }]
      ,
      width: 160,
      height: 32,
      panelHeight: 400,
      onSelect: function (node) {
        var cknodes = $('#regionTree').tree("getChecked");
        for (var i = 0; i < cknodes.length; i++) {
          if (cknodes[i].id != node.id) {
            $('#regionTree').tree("uncheck", cknodes[i].target);
          }
        }
        if (node.checked) {
          $('#regionTree').tree('uncheck', node.target);

        } else {
          $('#regionTree').tree('check', node.target);

        }

      },
      onLoadSuccess: function (node, data) {
        $(this).find('span.tree-checkbox').unbind().click(function () {
          $('#regionTree').tree('select', $(this).parent());
          return false;
        });
      }
    })

关键代码：

onSelect: function (node) {
        var cknodes = $('#regionTree').tree("getChecked");
        for (var i = 0; i < cknodes.length; i++) {
          if (cknodes[i].id != node.id) {
            $('#regionTree').tree("uncheck", cknodes[i].target);
          }
        }
        if (node.checked) {
          $('#regionTree').tree('uncheck', node.target);

        } else {
          $('#regionTree').tree('check', node.target);

        }

      },
      onLoadSuccess: function (node, data) {
        $(this).find('span.tree-checkbox').unbind().click(function () {
          $('#regionTree').tree('select', $(this).parent());
          return false;
        });
      }

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