使用Grep基于grep或delete函数从JSON对象创建新的JSON对象

Given following JSON object

给出以下JSON对象

var data = {
    "ok" : true,
    "messages" : [
        {
            "type" : "message",
            "subtype" : "bot_remove"
        },
        {
            "type":"message",
            "subtype":"file_share",
            "file" : {
                "name" : "file_name"
            },
        }    
    ],
    "has_more" : false
}
var