如何将数组追加到现有的json JavaScript？

Question

我想创建一个json对象，例如：

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

我想做类似的事情：

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

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

但是我无法创建该“电影”部分。 我该如何完成？

Answer 1

由于将对象创建为数组，因此出现此错误。 您必须创建一个对象以添加属性：

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

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

Answer 2

您不能混合数据类型（推仅适用于具有对象的数组和属性），请尝试如下操作：

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，这有效

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>