此插件依赖于jquery 并且插件内图标依赖于https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css
js如下

(function($){
    'use strict';
    function Trees(element,options){
        this.element = element;
        this.options = {
            array:options.array,//trees结构数组
            nodeName:options.nodeName,//子结构参数名
            isCheckbox:options.isCheckbox,//是否使用多选框,
            deep:0
        };
        this.init();
    };

    Trees.prototype = {
        constructor:Trees,
        init:function(){
            this.createHtml();
            this.bindClickEvent();
        },
        createHtml:function(){
            console.log(this.options);
            this.loop(this.options.array,undefined,this.options.deep);
        },
        bindClickEvent:function(){
            $(document).on("click",".treesNode",function(e){
                e.stopPropagation();
                $(".treesNode").removeClass("currentNode");
                $(this).addClass("currentNode");
            });
            $(document).on("click",".toggleChildrenNode",function(e){
                $(this).toggleClass("fa-caret-left");
                $(this).toggleClass("fa-caret-down");
                $(this).parent().parent().find(".childrens").eq(0).toggle()
            });
        },
        loop:function(array,id,deep){
            console.log(id)
            deep++;
            array.forEach(item=>{
                let html = `
                <li data-id="${item.id}" class="treesNode" style="text-indent:${(deep-1)*15}px">
                    <div class="trees_info">
                        <i class="fa fa-caret-left toggleChildrenNode"></i>
                        ${this.isCheckboxFun(item)}
                        <span>${item.name}</span>
                    </div>
                    <div class="childrens" data-id="${item.id}" hidden></div>
                </li>
                `;
                if(id){
                    $(`.childrens[data-id=${id}]`).append(html);
                } else {
                    this.element.append(html);
                };
                if(item[this.options.nodeName] && item[this.options.nodeName].length != 0){
                    this.loop(item[this.options.nodeName],item.id,deep)
                }
            })
        },
        isCheckboxFun:function(item){
            if(this.options.isCheckbox){
                return `<input type="checkbox" value="${item.id}">`
            } else {
                return ""
            }
        }
    };
    $.fn.trees = function (options) {
        return new Trees($(this), options);
    }
})($)

css

.treesNode {
    list-style: none;
}

使用方法

//#trees为需要生成树状结构的dom 变量tree为数据结构 
$("#trees").trees({
        array:tree,
        nodeName:"children",
        isCheckbox:true,
    });

最终结果

image.png