JAVASCRIPT

json to string dart

import 'dart:convert';
main() {
  String objText = '{"name": "bezkoder", "age": 30}';
  User user = User.fromJson(jsonDecode(objText));
  print(user);

convert json to dart

class TrendingMoviesModel {
  String? name;
  String? backdropPath;
  List<int>? genreIds;
  String? originalLanguage;
  String? posterPath;
  List<String>? originCountry;
  String? overview;
  String? mediaType;

  TrendingMoviesModel(
      {this.name,
      this.backdropPath,
      this.genreIds,
      this.originalLanguage,
      this.posterPath,
      this.originCountry,
      this.overview,
      this.mediaType});

  TrendingMoviesModel.fromJson(Map<String, dynamic> json) {
    name = json['name'];
    backdropPath = json['backdrop_path'];
    genreIds = json['genre_ids'].cast<int>();
    originalLanguage = json['original_language'];
    posterPath = json['poster_path'];
    originCountry = json['origin_country'].cast<String>();
    overview = json['overview'];
    mediaType = json['media_type'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['name'] = this.name;
    data['backdrop_path'] = this.backdropPath;
    data['genre_ids'] = this.genreIds;
    data['original_language'] = this.originalLanguage;
    data['poster_path'] = this.posterPath;
    data['origin_country'] = this.originCountry;
    data['overview'] = this.overview;
    data['media_type'] = this.mediaType;
    return data;
  }
}

json data to dart

class Autogenerated {
  Id iId;
  String name;
  String email;
  String password;
  String address;
  String type;
  List<Null> cart;
  V vV;

  Autogenerated(
      {this.iId,
      this.name,
      this.email,
      this.password,
      this.address,
      this.type,
      this.cart,
      this.vV});

  Autogenerated.fromJson(Map<String, dynamic> json) {
    iId = json['_id'] != null ? new Id.fromJson(json['_id']) : null;
    name = json['name'];
    email = json['email'];
    password = json['password'];
    address = json['address'];
    type = json['type'];
    if (json['cart'] != null) {
      cart = new List<Null>();
      json['cart'].forEach((v) {
        cart.add(new Null.fromJson(v));
      });
    }
    vV = json['__v'] != null ? new V.fromJson(json['__v']) : null;
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    if (this.iId != null) {
      data['_id'] = this.iId.toJson();
    }
    data['name'] = this.name;
    data['email'] = this.email;
    data['password'] = this.password;
    data['address'] = this.address;
    data['type'] = this.type;
    if (this.cart != null) {
      data['cart'] = this.cart.map((v) => v.toJson()).toList();
    }
    if (this.vV != null) {
      data['__v'] = this.vV.toJson();
    }
    return data;
  }
}

class Id {
  String oid;

  Id({this.oid});

  Id.fromJson(Map<String, dynamic> json) {
    oid = json['$oid'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['$oid'] = this.oid;
    return data;
  }
}

class V {
  String numberInt;

  V({this.numberInt});

  V.fromJson(Map<String, dynamic> json) {
    numberInt = json['$numberInt'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['$numberInt'] = this.numberInt;
    return data;
  }
}

convert json to dart

class TrendingMoviesModel {
  String? name;
  String? backdropPath;
  List<int>? genreIds;
  String? originalLanguage;
  String? posterPath;
  List<String>? originCountry;
  String? overview;
  String? mediaType;

  TrendingMoviesModel(
      {this.name,
      this.backdropPath,
      this.genreIds,
      this.originalLanguage,
      this.posterPath,
      this.originCountry,
      this.overview,
      this.mediaType});

  TrendingMoviesModel.fromJson(Map<String, dynamic> json) {
    name = json['name'];
    backdropPath = json['backdrop_path'];
    genreIds = json['genre_ids'].cast<int>();
    originalLanguage = json['original_language'];
    posterPath = json['poster_path'];
    originCountry = json['origin_country'].cast<String>();
    overview = json['overview'];
    mediaType = json['media_type'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['name'] = this.name;
    data['backdrop_path'] = this.backdropPath;
    data['genre_ids'] = this.genreIds;
    data['original_language'] = this.originalLanguage;
    data['poster_path'] = this.posterPath;
    data['origin_country'] = this.originCountry;
    data['overview'] = this.overview;
    data['media_type'] = this.mediaType;
    return data;
  }
}

convert json to dart

class NewsDescriptionModel {
  NewsDetail? newsDetail;
  String? editorList;
  List<Tags>? tags;

  NewsDescriptionModel({this.newsDetail, this.editorList, this.tags});

  NewsDescriptionModel.fromJson(Map<String, dynamic> json) {
    newsDetail = json['NewsDetail'] != null
        ? new NewsDetail.fromJson(json['NewsDetail'])
        : null;
    editorList = json['editorList'];
    if (json['tags'] != null) {
      tags = <Tags>[];
      json['tags'].forEach((v) {
        tags!.add(new Tags.fromJson(v));
      });
    }
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    if (this.newsDetail != null) {
      data['NewsDetail'] = this.newsDetail!.toJson();
    }
    data['editorList'] = this.editorList;
    if (this.tags != null) {
      data['tags'] = this.tags!.map((v) => v.toJson()).toList();
    }
    return data;
  }
}

class NewsDetail {
  String? id;
  String? source;
  String? author;
  String? title;
  String? timestamp;
  String? section;
  String? slug;
  String? sectionId;
  String? content;
  String? websiteurl;
  String? thumbnailUrl;
  String? sectionUrl;
  String? url;
  String? newsType;
  String? highlights;
  String? comments;

  NewsDetail(
      {this.id,
      this.source,
      this.author,
      this.title,
      this.timestamp,
      this.section,
      this.slug,
      this.sectionId,
      this.content,
      this.websiteurl,
      this.thumbnailUrl,
      this.sectionUrl,
      this.url,
      this.newsType,
      this.highlights,
      this.comments});

  NewsDetail.fromJson(Map<String, dynamic> json) {
    id = json['id'];
    source = json['source'];
    author = json['author'];
    title = json['title'];
    timestamp = json['timestamp'];
    section = json['section'];
    slug = json['slug'];
    sectionId = json['section_id'];
    content = json['content'];
    websiteurl = json['websiteurl'];
    thumbnailUrl = json['thumbnail_url'];
    sectionUrl = json['section_url'];
    url = json['url'];
    newsType = json['news_type'];
    highlights = json['highlights'];
    comments = json['comments'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['id'] = this.id;
    data['source'] = this.source;
    data['author'] = this.author;
    data['title'] = this.title;
    data['timestamp'] = this.timestamp;
    data['section'] = this.section;
    data['slug'] = this.slug;
    data['section_id'] = this.sectionId;
    data['content'] = this.content;
    data['websiteurl'] = this.websiteurl;
    data['thumbnail_url'] = this.thumbnailUrl;
    data['section_url'] = this.sectionUrl;
    data['url'] = this.url;
    data['news_type'] = this.newsType;
    data['highlights'] = this.highlights;
    data['comments'] = this.comments;
    return data;
  }
}

class Tags {
  String? title;
  int? topicID;
  String? sectionPageURL;

  Tags({this.title, this.topicID, this.sectionPageURL});

  Tags.fromJson(Map<String, dynamic> json) {
    title = json['title'];
    topicID = json['topicID'];
    sectionPageURL = json['sectionPageURL'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['title'] = this.title;
    data['topicID'] = this.topicID;
    data['sectionPageURL'] = this.sectionPageURL;
    return data;
  }
}

dart to json

class BannersModel {
  bool? status;
  List<Banners>? banners;

  BannersModel({this.status, this.banners});

  BannersModel.fromJson(Map<String, dynamic> json) {
    status = json['status'];
    if (json['banners'] != null) {
      banners = <Banners>[];
      json['banners'].forEach((v) {
        banners!.add(new Banners.fromJson(v));
      });
    }
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['status'] = this.status;
    if (this.banners != null) {
      data['banners'] = this.banners!.map((v) => v.toJson()).toList();
    }
    return data;
  }
}

class Banners {
  String? id;
  String? image;

  Banners({this.id, this.image});

  Banners.fromJson(Map<String, dynamic> json) {
    id = json['id'];
    image = json['image'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['id'] = this.id;
    data['image'] = this.image;
    return data;
  }
}

dart to json

class SendSyncedRequestModel {
  String? idUser;
  List<Alarms>? alarms;

  SendSyncedRequestModel({this.idUser, this.alarms});

  SendSyncedRequestModel.fromJson(Map<String, dynamic> json) {
    idUser = json['idUser'];
    if (json['alarms'] != null) {
      alarms = <Alarms>[];
      json['alarms'].forEach((v) {
        alarms!.add(new Alarms.fromJson(v));
      });
    }
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['idUser'] = this.idUser;
    if (this.alarms != null) {
      data['alarms'] = this.alarms!.map((v) => v.toJson()).toList();
    }
    return data;
  }
}

class Alarms {
  String? publicAlarmId;
  String? privateAlarmId;
  String? name;
  String? mobileAESKey;
  String? newKeyMessage;
  String? status;

  Alarms(
      {this.publicAlarmId,
      this.privateAlarmId,
      this.name,
      this.mobileAESKey,
      this.newKeyMessage,
      this.status});

  Alarms.fromJson(Map<String, dynamic> json) {
    publicAlarmId = json['publicAlarmId'];
    privateAlarmId = json['privateAlarmId'];
    name = json['name'];
    mobileAESKey = json['mobileAESKey'];
    newKeyMessage = json['newKeyMessage'];
    status = json['status'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['publicAlarmId'] = this.publicAlarmId;
    data['privateAlarmId'] = this.privateAlarmId;
    data['name'] = this.name;
    data['mobileAESKey'] = this.mobileAESKey;
    data['newKeyMessage'] = this.newKeyMessage;
    data['status'] = this.status;
    return data;
  }
}