JSON-如何使用通配符进行引用？

Question

I have a large JSON object where I can access the the value I want like so:

$scope.customers[1][data]["DisplayName"];

However, that references the DisplayName of only one object.

Is there an easy way to return all DisplayName properties from the entire collection?

ie

$scope.customers[*][data]["DisplayName"];

Or is the only way to do this by creating a new JSON object by looping through the original?

Answer 1

You can use map() function of Array. It applies the callback function to each element of array and produces new array:

[1,2,3].map(function(num) { return num * num }); // returns [1, 4, 9]

In your case you can use:

$scope.customers.map(function(element) { return element[data]["DisplayName"]; } );