js 广度优先遍历

;
(function() {
    var def = function() {
        var me = this;
        me.data = {
            color_1: '#333333',
            color_2: '#1890ff',
            one: 1,
            txt: "node",
            arr: [{
                click: false,
                txt: "parent-1",
                show: true,
                arr: [{
                    click: false,
                    txt: "child-1",
                    show: false,
                    arr: [{
                        click: false,
                        txt: "child-1-1",
                        show: false
                    }, {
                        click: false,
                        txt: "child-1-2",
                        show: false
                    }]
                }, {
                    click: false,
                    txt: "child-2",
                    show: false
                }, {
                    click: false,
                    txt: "child-3",
                    show: false
                }, {
                    click: false,
                    txt: "child-4",
                    show: false
                }]
            }, {
                click: false,
                txt: "parent-2",
                show: true
            }, {
                click: false,
                txt: "parent-3",
                show: true
            }, {
                click: false,
                txt: "parent-4",
                show: true
            }]
        }
        me.key = "child-1-1"
        me.r = {
            count: 0,result:[]
        };
        me.arr = [];
        me.start(me.r);
        console.log(me.r);
    };
    def.prototype = {
        start: function(p) {
            var me = this;
            me.arr.push(me.data);
            while (me.arr.length) {
                p.count += 1;
                var tem = me.arr[0];
                if (tem.arr) {
                    tem.arr.forEach(i => {
                        me.arr.push(i);
                    });
                }
                if (tem.txt === me.key) {
                    me.r.result.push(tem);
                    break;
                }
               me.r.result.push(me.arr.shift());
            }
        }
    };
    new def()
})()

js 广度优先