javascript - 如何从 json 获取对未命名数组的引用

Question

我正在从服务器取回:

{"Message":"The request is invalid.","ModelState":{"":["Name greg@gmail.com is already taken.","Email 'greg@gmail.com' is already taken."]}}

JS中如何引用数组的第一项？调试器告诉我 ModelState 是一个对象，但数组似乎没有名称。

Answer 1

您可以像这样引用未命名数组的第一项:

var jsonString = {"Message":"The request is invalid.","ModelState":{"":["Name greg@gmail.com is already taken.","Email 'greg@gmail.com' is already taken."]}};

console.log('first item: ', jsonString.ModelState[''][0]);