javascript - 在我的函数中用下划线过滤掉数组？

Question

如果 profile.team_member_designations 是一个数组，则运行下面的代码。我想添加一个条件来过滤或检查 profile_member_designations 是否是一个数组，因为如果它是一个字符串，我不希望代码运行。本质上，在映射函数之前，我想过滤掉数组，以便仅运行代码。我该怎么做？

JS

   var getTeamDesignations = function(profile) {
        //Designations for a single team member                                                                                                          
        var teamDesignations = [];
        if (profile.team_members) {
            teamDesignations = _.chain(profile.team_members)
                .map(_.property('team_member_designations'))
                .flatten()
                .uniq()
                .value();
        }
        return teamDesignations;
    };

Answer 1

如果我正确理解你的问题，你想要这样的东西。

var getTeamDesignations = function(profile) {
    //Designations for a single team member                                                                                                          
    var teamDesignations = [];
    if (profile.team_members) {
        teamDesignations = _.chain(profile.team_members)
            .filter(_.compose(_.isArray, _.property('team_member_designations')))
            .map(_.property('team_member_designations'))
            .flatten()
            .uniq()
            .value();
    }
    return teamDesignations;
};