1. Initial asynchronous loading tree
The initialization gives a root node by default, and then combines the asynchronous loading method to manually trigger the default loading of the first layer, as shown in the figure:
The code is as follows:
var treeSetting = { async: { enable: true, <a href="http://my.oschina.net/wealpan/admin/"xxx/demo.do?method=listByTree" rel="nofollow">url:"xxx/demo.do?method=listByTree</a>", dataType:"json", autoParam:["id=pid"] }, view: { dblClickExpand: true, selectedMulti: false, expandSpeed: ($.browser.msie && parseInt($.browser.version)<=6)?"":"fast" }, data: { simpleData: { enable:true, idKey: "id", pIdKey: "pid", rootPId: "root" } }, callback: { onNodeCreated: zTreeOnNodeCreated } }; //默认根结点 var rootNode = {"id":0, "pid":"root", "name":"商品分类", "open":true, "isParent":true}; $(document).ready(function(){ var zTreeObj = $.fn.zTree.init($("#tree"), treeSetting, rootNode); var node = zTreeObj.getNodeByParam("id", 0, null); zTreeObj.reAsyncChildNodes(node, "refresh"); });
2. Asynchronous search for leaf nodes
When using JQuery ZTREE, you may need to use asynchronous fuzzy search for leaf nodes, as shown in the figure:
If you only use ZTREE’s own expansion method zTreeObj.expandNode, it will only expand the change point and cannot trigger asynchronous loading. At this time, you must manually call the asynchronous loading method for processing. The solution is as follows:
Bring the search parameters to the background by setting values in the otherParam array (when there are no parameters, otherParam must be set to an empty array, otherwise the previous parameters will always be brought to the background); in the callback function onNodeCreated after the node is created Perform manual asynchronous loading.
The code is as follows:
function searchM() { var param = $.trim($("input[name='param']").val()); var treeObj = $.fn.zTree.getZTreeObj("tree"); var node = treeObj.getNodeByParam("id", 0, null); if(param != ""){ param = encodeURI(encodeURI(param)); treeObj.setting.async.otherParam=["param", param]; }else { //搜索参数为空时必须将参数数组设为空 treeObj.setting.async.otherParam=[]; } treeObj.reAsyncChildNodes(node, "refresh"); } function zTreeOnNodeCreated(event, treeId, treeNode) { var param <span></span><span></span>= $.tr<span></span>im($("input[name='param']").val()); var treeObj = $.fn.zTree.getZTreeObj("tree"); //只有搜索参数不为空且该节点为父节点时才进行异步加载 if(param != "" && treeNode.isParent){ treeObj.reAsyncChildNodes(treeNode, "refresh"); } };
The above is all about jquery ztree asynchronous search. I hope it will be helpful to everyone's learning.

实现方法:1、用“$("img").delay(毫秒数).fadeOut()”语句,delay()设置延迟秒数;2、用“setTimeout(function(){ $("img").hide(); },毫秒值);”语句,通过定时器来延迟。

修改方法:1、用css()设置新样式,语法“$(元素).css("min-height","新值")”;2、用attr(),通过设置style属性来添加新样式,语法“$(元素).attr("style","min-height:新值")”。

区别:1、axios是一个异步请求框架,用于封装底层的XMLHttpRequest,而jquery是一个JavaScript库,只是顺便封装了dom操作;2、axios是基于承诺对象的,可以用承诺对象中的方法,而jquery不基于承诺对象。

增加元素的方法:1、用append(),语法“$("body").append(新元素)”,可向body内部的末尾处增加元素;2、用prepend(),语法“$("body").prepend(新元素)”,可向body内部的开始处增加元素。

在jquery中,apply()方法用于改变this指向,使用另一个对象替换当前对象,是应用某一对象的一个方法,语法为“apply(thisobj,[argarray])”;参数argarray表示的是以数组的形式进行传递。

删除方法:1、用empty(),语法“$("div").empty();”,可删除所有子节点和内容;2、用children()和remove(),语法“$("div").children().remove();”,只删除子元素,不删除内容。

去掉方法:1、用“$(selector).removeAttr("readonly")”语句删除readonly属性;2、用“$(selector).attr("readonly",false)”将readonly属性的值设置为false。

on()方法有4个参数:1、第一个参数不可省略,规定要从被选元素添加的一个或多个事件或命名空间;2、第二个参数可省略,规定元素的事件处理程序;3、第三个参数可省略,规定传递到函数的额外数据;4、第四个参数可省略,规定当事件发生时运行的函数。


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