This article mainly introduces the detailed explanation of the tree shape in layui about the value transfer problem. Now I will share it with you and give you a reference.
This article introduces the problem of value-passing in the tree shape in layui. I would like to share it with you. The details are as follows:
This is the effect we need. In actual operation, rendering will be performed first and then the method will be executed. Then we found that the tree-shaped JSON was empty. After debugging it N times, we thought it was a priority issue.
The final solution is
<script type="text/javascript"> ////layui 的 form 模块 var form = ""; layui.use(['form'], 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: 'xtree1', 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('btn1').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('class') == 'layui-xtree-item') { var xtree_all = _this.getChildByClassName(xtree_p, 'layui-xtree-item'); var xtree_count = 0; for (var i = 0; i < xtree_all.length; i++) { if (_this.getChildByClassName(xtree_all[i], 'layui-xtree-checkbox')[0].checked) { xtree_count++; } } if (xtree_count <= 0) { _this.getChildByClassName(xtree_p, 'layui-xtree-checkbox')[0].checked = false; _this.getChildByClassName(xtree_p, 'layui-xtree-checkbox')[0].nextSibling.classList.remove('layui-form-checked'); } else { _this.getChildByClassName(xtree_p, 'layui-xtree-checkbox')[0].checked = true; _this.getChildByClassName(xtree_p, 'layui-xtree-checkbox')[0].nextSibling.classList.add('layui-form-checked'); } this.ParendCheck(_this.getChildByClassName(xtree_p, 'layui-xtree-checkbox')[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('class') == 'layui-xtree-item') { var _pe = _this.getChildByClassName(e.parentNode.parentNode, 'layui-xtree-checkbox')[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('layui-xtree-checkbox'); for (var i = 0; i < cks.length; i++) { if (cks[i].checked && cks[i].getAttribute('data-xend') == '1') { 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('layui-xtree-checkbox'); 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('layui-xtree-checkbox'); for (var i = 0; i < cks.length; i++) { if (cks[i].value == a) { if (cks[i].parentNode.parentNode.getAttribute('id') == _this._container.getAttribute('id')) return null; return _this.getChildByClassName(cks[i].parentNode.parentNode, 'layui-xtree-checkbox')[0]; } } return null; } } }); } function strToJson(str) { var json = (new Function("return " + str))(); return json; } </script>
The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
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