Structure selected items from dropdownlist to JSON format?

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I have a company, department drop-down list.
If I select a company, then department dropdown appears, after select multiple departments, the result show me who are belong to those company + departments.
The problem is I need to store those people in a JSON object to send back to a server.

What I have tried:

departmentSelector.onchange = function() {
    persons.innerHTML = "";
    var selectedDepartments = document.querySelectorAll("[name='departmentSelector'] option:checked");

    var myObj = {};

    for (var i = 0; i < selectedDepartments.length; i++) {
        var temp3 = selectedDepartments[i].dataset.company;
        var prsonsArray = database[temp3][selectedDepartments[i].value];
        console.log(prsonsArray);
        for (var x = 0; x < prsonsArray.length; x++) {
            persons.innerHTML += "<li>" + prsonsArray[x] + "</li>";
            console.log(myObj);
        }
    }
}

Posted 1-Apr-19 8:00am

NULL Value

Updated 1-Apr-19 8:23am

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Richard Deeming 4-Apr-19 13:26pm

What is the JSON supposed to look like, and where are you stuck?

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honey the codewitch · Answer 1 · 2019-04-01T08:23:00

Is there a reason you're not just emitting to say, a StringBuilder?

I usually just spit out JSON that way. It's so simple it's hard to get it wrong.

The biggest thing is spitting out json string escapes but that's pretty trivial

This will give you a properly escaped JSON string literal from a C# string.
Every other JSON datatype except "null" can be written out with ToString()

C#

public static string ToStringLiteral(string str)
		{
			if (null == str) return "null";
			StringBuilder result = new StringBuilder();
			result.Append("\"");
			foreach (char ch in str)
			{
				switch (ch)
				{
					case '\b':
						result.Append("\\b");
						break;
					/*case '/':
						result.Append("\\/");
						break;*/
					case '\\':
						result.Append("\\\\");
						break;
					case '\t':
						result.Append("\\t");
						break;
					case '\r':
						result.Append("\\r");
						break;
					case '\n':
						result.Append("\\n");
						break;
					case '\"':
						result.Append("\\\"");
						break;
					default:
						if (char.IsControl(ch))
						{
							result.Append("\\u");
							ushort u = ch;
							result.Append(((byte)(u / 256)).ToString("x2"));
							result.Append(((byte)(u % 256)).ToString("x2"));
						}
						else
							result.Append(ch);
						break;
				}
			}
			result.Append('\"');
			return result.ToString();
		}