将输入值格式化为 JSON

Question

The Issue

I am trying to convert form inputs to a json object but having difficulty trying to achieve this, below is a snippet of the HTML which I have and the JSON which I'm trying to get.

 { "2019-01-23": [ { id: 1, period: 'am' }, { id: 2, period: 'pm' } ] }

 <select name="dates[2019-01-23][0][id]"> <option value="1" selected>1</option> <option value="2">2</option> <option value="3">3</option> </select> <select name="dates[2019-01-23][0][period]"> <option selected>am</option> <option>pm</option> </select> <select name="dates[2019-01-23][1][id]"> <option value="1">1</option> <option value="2" selected>2</option> <option value="3">3</option> </select> <select name="dates[2019-01-23][1][period]"> <option>am</option> <option selected>pm</option> </select>

What I've tried

var inputs = $(':input').serializeArray();
var json = [];
$.each(inputs, function(key, input) {
    var names = input.name.split(/\[(.*?)\]/);
    var data = [];

    data[names[1]] = [];
    data[names[1]][names[3]] = { id: null, period: null };
    if(names[5] == 'id') {
        data[names[1]][names[3]].id = input.value;
    }
    if(names[5] == 'period') {
        data[names[1]][names[3]].period = input.value;
    }

    json.push(data);
});

But this doesn't quite achieve what I'm after (multiple of the same date) and I'm getting a bit lost now, I'm sure there must be a way of doing this a lot easier.

Answer 1

First, match is more appropriate for your case than split .

Furthermore, since json is object literal, it should be initialised with empty object ( {} ), not array.

push is not quite appropriate for your case. It's better to use direct assignment instead.

So the code might look like this:

 var inputs = $(':input').serializeArray(); var json = {}; $.each(inputs, function(key, input) { var keys = input.name.match(/([^\\[\\]]+)/g).slice(1); var date = keys[0], i = keys[1], id = keys[2]; if (!json[date]) json[date] = []; if (!json[date][i]) json[date][i] = {}; json[date][i][id] = input.value; }); console.log(JSON.stringify(json));

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script> <select name="dates[2019-01-23][0][id]"> <option value="1" selected>1</option> <option value="2">2</option> <option value="3">3</option> </select> <select name="dates[2019-01-23][0][period]"> <option selected>am</option> <option>pm</option> </select> <select name="dates[2019-01-23][1][id]"> <option value="1">1</option> <option value="2" selected>2</option> <option value="3">3</option> </select> <select name="dates[2019-01-23][1][period]"> <option>am</option> <option selected>pm</option> </select>