js递归层级导航附源码下载

咱们在做目录树无限级分类的时候，需要关联层级标题比如：第一层：女装，第二层：女装->潮流女装,第三层：女装->潮流女装->大码女装，第三层：女装->潮流女装->品牌女装，第四层：女装->潮流女装->大码女装->瘦身女装。这样的层级关系如何显示呢？

下面代码奉上：

<script>
    var obj=[
        {
            "title":"A",
            "children":[
                {
                    "title":"A-1",
                    "children":[
                        {
                            "title":"A-1-1",
                            children:[]
                        },
                        {
                            "title":"A-1-2",
                            children:[]
                        }
                    ]
                },
                {
                    "title":"A-2",
                    "children":[]
                }
            ]
        },
        {
            "title":"B",
            "children":[
                {
                    "title":"B-1",
                    "children":[]
                },
                {
                    "title":"B-2",
                    "children":[]
                }
            ]
        }
    ]
    var pathTitle="";
    function deep(obj){
        for(var i=0;i<obj.length;i++){
           //拼接标题
            pathTitle+=obj[i].title+",";
            console.log(pathTitle.substring(0,pathTitle.length-1));
            if(obj[i].children && obj[i].children.length>0){
                deep(obj[i].children)
            }
            //去除同级别上一个标题
            var reg=eval("/"+obj[i].title+",/g");
            pathTitle=pathTitle.replace(reg,"");
        }
    }
    deep(obj);
</script>

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