js中处理数据问题，遇到问题了，写不出来。

Question

把以下数据处理成这样的

// 源数据
var arr = [{
                name: "河南",
                url: "*",
                child: [{
                        name: "濮阳",
                        url: "*",
                        child: [{
                                name: "南乐县",
                                url: "nale.html"
                            },
                            {
                                name: "清丰县",
                                url: "qingfeng"
                            }
                        ]
                    },
                    {
                        name: "鹤壁",
                        url: "hebi.html"
                    },
                ]
            },
            {
                name: "广东",
                url: "*",
                child: [{
                        name: "深圳",
                        url: "*",
                        child: [{
                                name: "宝安区",
                                url: "baoan"
                            },
                            {
                                name: "南山区",
                                url: "nanshan.html"
                            }
                        ]
                    },
                    {
                        name: "广州",
                        url: "guangzhou"
                    },
                    {
                        name: "佛山",
                        url: "foshna.html"
                    }
                ]
            },
        ]

要处理成这样的

var arr = [{
                name: "河南",
                url: "*",
                child: [{
                        name: "濮阳",
                        url: "*",
                        child: [{
                                name: "南乐县",
                                url: "nale.html"
                            },
                        ]
                    },
                    {
                        name: "鹤壁",
                        url: "hebi.html"
                    },
                ]
            },
            {
                name: "广东",
                url: "*",
                child: [{
                        name: "深圳",
                        url: "*",
                        child: [
                            {
                                name: "南山区",
                                url: "nanshan.html"
                            }
                        ]
                    },
                    {
                        name: "佛山",
                        url: "foshna.html"
                    }
                ]
            },
        ]

Answer 1

要求只要以.html结尾的，但保持数据结构不变。我可以想到用endsWith()