添加到javascript关联数组

Question

I want the following structure:

    var data={"users":[
    {
        "firstName":"Ray",
        "lastName":"Villalobos",
        "joined":2012
    },
    {
        "firstName":"John",
        "lastName":"Jones",
        "joined":2010
    }
    ]}

I want to be able to programatically add entries to it. Here is what I tried:

  var data = [];
   data.push({
     "firstName":"Johsssn",
     "lastName":"Jossnes",
     "joined":2010
   });

Answer 1

Your array is actually data.users , not data .
So use this instead:

var data = {users: []};
data.users.push({
  "firstName":"Johsssn",
  "lastName":"Jossnes",
  "joined":2010
});

Answer 2

    var data = {users: []};
    data.users.push({
         "firstName":"Johsssn",
         "lastName":"Jossnes",
         "joined":2010
    });

Answer 3

Your data object contains one property, users , which is an array of users, so you need to push into it:

data.users.push({
    "firstName":"Johsssn",
    "lastName":"Jossnes",
     "joined":2010
});