使用JavaScript过滤字符串属性上的JSON

Question

I am trying to filter out all objects based on a string attribute like this:

var data = $.parseJSON(valid_json); 

data = data.filter(function (el) {
  return (el.name == 'myName');
});

This returns an empty array but comparing integers works:

var data = $.parseJSON(valid_json); 

data = data.filter(function (el) {
  return (el.price == 1000);
});

This will get all objects with price = 1000

What am I doing wrong?

Answer 1

If you have a valid json then you don't have to parse it to create a valid json. That should only be done when you have a valid json string like:

var jsonstr = '{"name":"Foo", "price":"1000"}'; // this one needs parsing.

Reasons would be for empty Array might be you are targeting the wrong value of a key of the object or the value doesn't exist in the objects you have.

Actually this is working for me:

 var data = [{name:"Foo", price:1000}, {name:"Bar", price:1000}]; data = data.filter(function (el) { return (el.name == 'Foo'); }); document.body.innerHTML = '<pre>'+ JSON.stringify(data) +'</pre>';