JavaScript 中将数组转换为 json 的问题

Question

I have this code:

var fields = [];
$('input').each(function(){
  var name = $(this).attr("name");
  fields[name] = $(name).val();
});

And I want convert the fields variable to a json string, but when I use JSON.stringify I get (using console.log ) only: []

How can I simply convert array fields to a json string?

Answer 1

Ok problem was on the following line:

 fields[name] = $(name).val();

I changed name to this :

 fields[name] = $(this).val();

And worked like i want it to.

Answer 2

If you want text strings like field names (as opposed to numbers) as property names, you want an object , not an array. Initialize fields to {} instead of [] .

The JSON serialization of an array will only include the properties whose keys are numbers, from zero up to the value of .length (minus one).

Answer 3

Just made one correction, use object instead of array:

    var fields = {};
    $('input').each(function(){
     var name = $(this).attr("name");
     fields[name] = $(name).val();
    });