如何將數組追加到現有的json JavaScript？

Question

我想創建一個json對象，例如：

{
   name: "Julia"
   birthdate: "xxxx"
   movies: [{title: "movie1", rating: 5}, {title: "movie2", rating 3}}]
}

我想做類似的事情：

var myobj = [];
myobj.push({name: "Julia", birthdate: "xxxx"});

myobj.movies = [];
myobj.movies.push({title: "movie1", rating: 5});
myobj.movies.push({title: "movie2", rating: 3});

但是我無法創建該“電影”部分。 我該如何完成？

Answer 1

由於將對象創建為數組，因此出現此錯誤。 您必須創建一個對象以添加屬性：

var myobj = {name: "Julia", birthdate: "xxxx"};

myobj.movies = []; 
myobj.movies.push({title: "movie1", rating: 5}); 
myobj.movies.push({title: "movie2", rating: 3}); 

Answer 2

您不能混合數據類型（推僅適用於具有對象的數組和屬性），請嘗試如下操作：

var myobj = {};
myobj.persons = [];
myobj.persons.push({name: "Julia", birthdate: "xxxx"});

myobj.movies = [];
myobj.movies.push({title: "movie1", rating: 5});
myobj.movies.push({title: "movie2", rating: 3});

Answer 3

是的，這有效

var myobj = []; myobj.push({name: "Julia", birthdate: "xxxx"});

myobj.push({movies: []});

myobj.movies = [];
myobj.movies.push({title: "movie1", rating: 5});
myobj.movies.push({title: "movie2", rating: 3});

console.log(myobj);</code>