如何将数组追加到现有的json javascript？

Question

我想创建一个json对象，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});

但我无法创造“电影”部分。我该如何做到这一点？

Answer 1

您收到此错误是因为您正在将对象创建为数组。您必须创建一个对象来添加属性：

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

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

Answer 2

你不能混合数据类型（推送仅适用于数组和属性与对象），尝试这样的事情：

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

这是有效的

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>