Home > Web Front-end > JS Tutorial > body text

Solution to the problem of value-passing in the tree shape in layui

小云云
Release: 2018-01-17 09:07:26
Original
2120 people have browsed it

This article mainly introduces the detailed explanation of the tree shape in layui about the value-passing problem. The editor thinks it is quite good. Now I will share it with you and give it a reference. Let's follow the editor to take a look, I hope it can help everyone

#This is the effect we need. In actual operation, the rendering will be performed first and then the method will be executed. Then we I found that the tree-shaped JSON was empty. I debugged it N times and thought it was a priority issue.

The final solution is


<script type="text/javascript">
  ////layui 的 form 模块
  var form = "";
  layui.use([&#39;form&#39;], function () {
    // $ = layui.jquery;
    form = layui.form;

    //获取节点数据
    getTreeData();
    //return false;
  });
  function getTreeData() {
    $.ajax({
      //async: false,
      type: "post",
      url: "/api/WebFW//getOrgTree",
      datatype: "json",
      contenttype: "application/json; charset=utf-8",
      success: function (jdata) {
        var xtree1 = new layuiXtree({
          elem: &#39;xtree1&#39;,
          form: form,
          data: strToJson(jdata),
          isopen: true, //false初始关闭,true打开
          click: function (data) { //节点选中状态改变事件监听,全选框有自己的监听事件
            console.log(data.elem); //得到checkbox原始DOM对象
            console.log(data.elem.checked); //是否选中,true选中
            alert(data.value); //弹出value值
          }
        });

        //获取选中val
        document.getElementById(&#39;btn1&#39;).onclick = function () {
          var oCks = xtree1.GetChecked();
          for (var i = 0; i < oCks.length; i++) {
            alert(oCks[i].value);
          }
        }

        //子节点选中改变,父节点更改自身状态
        layuiXtree.prototype.ParendCheck = function (ckelem) {
          var _this = this;
          var xtree_p = ckelem.parentNode.parentNode;
          if (xtree_p.getAttribute(&#39;class&#39;) == &#39;layui-xtree-item&#39;) {
            var xtree_all = _this.getChildByClassName(xtree_p, &#39;layui-xtree-item&#39;);
            var xtree_count = 0;
            for (var i = 0; i < xtree_all.length; i++) {
              if (_this.getChildByClassName(xtree_all[i], &#39;layui-xtree-checkbox&#39;)[0].checked) {
                xtree_count++;
              }
            }
            if (xtree_count <= 0) {
              _this.getChildByClassName(xtree_p, &#39;layui-xtree-checkbox&#39;)[0].checked = false;
              _this.getChildByClassName(xtree_p, &#39;layui-xtree-checkbox&#39;)[0].nextSibling.classList.remove(&#39;layui-form-checked&#39;);
            } else {
              _this.getChildByClassName(xtree_p, &#39;layui-xtree-checkbox&#39;)[0].checked = true;
              _this.getChildByClassName(xtree_p, &#39;layui-xtree-checkbox&#39;)[0].nextSibling.classList.add(&#39;layui-form-checked&#39;);
            }
            this.ParendCheck(_this.getChildByClassName(xtree_p, &#39;layui-xtree-checkbox&#39;)[0]);
          }
        }

        //渲染之前按照选中的末级去改变父级选中状态
        layuiXtree.prototype.ParentCheckboxChecked = function (e) {
          var _this = this;
          if (e.parentNode.parentNode.getAttribute(&#39;class&#39;) == &#39;layui-xtree-item&#39;) {
            var _pe = _this.getChildByClassName(e.parentNode.parentNode, &#39;layui-xtree-checkbox&#39;)[0];
            _pe.checked = true;
            _this.ParentCheckboxChecked(_pe);
          }
        }

        //获取全部选中的末级checkbox对象
        layuiXtree.prototype.GetChecked = function () {
          var _this = this;
          var arr = new Array();
          var arrIndex = 0;
          var cks = _this.getByClassName(&#39;layui-xtree-checkbox&#39;);
          for (var i = 0; i < cks.length; i++) {
            if (cks[i].checked && cks[i].getAttribute(&#39;data-xend&#39;) == &#39;1&#39;) {
              arr[arrIndex] = cks[i];
              arrIndex++;
            }
          }
          return arr;
        }

        //获取全部的原始checkbox对象
        layuiXtree.prototype.GetAllCheckBox = function () {
          var _this = this;
          var arr = new Array();
          var arrIndex = 0;
          var cks = _this.getByClassName(&#39;layui-xtree-checkbox&#39;);
          for (var i = 0; i < cks.length; i++) {
            arr[arrIndex] = cks[i];
            arrIndex++;
          }
          return arr;
        }

        //根据值来获取其父级的checkbox原dom对象
        layuiXtree.prototype.GetParent = function (a) {
          var _this = this;
          var cks = _this.getByClassName(&#39;layui-xtree-checkbox&#39;);
          for (var i = 0; i < cks.length; i++) {
            if (cks[i].value == a) {
              if (cks[i].parentNode.parentNode.getAttribute(&#39;id&#39;) == _this._container.getAttribute(&#39;id&#39;)) return null;
              return _this.getChildByClassName(cks[i].parentNode.parentNode, &#39;layui-xtree-checkbox&#39;)[0];
            }
          }
          return null;
        }
      }
    });
  }

  function strToJson(str) {
    var json = (new Function("return " + str))();
    return json;
  }
</script>
Copy after login

Related recommendations:

Summary WeChat small Several methods of passing values ​​in program development

Detailed explanation of the values ​​of radio buttons, check buttons and drop-down lists in Vue.js form tags

Summary of the value-passing and obtaining methods of WeChat applet

The above is the detailed content of Solution to the problem of value-passing in the tree shape in layui. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!