How To Assign Data From Html Form(in Json Format) To Variable?

Question

In my abc.html I have the following code which will covert the form data(hard coded for now) to JSON format:

Solution 1:

If you are not handling this in backend you can retrieve the data in Javascript in a variable then just appned it as JSON to your data using JSON.stringify().

This is a working snippet:

functionsubmitform() {
      varFormData = {
        Company: myForm.Company.value,
        User: myForm.User.value,
        parameterMap: {
          p1: myForm.p1.value,
          p2: myForm.p2.value,
          p3: myForm.p3.value
        }
      };
      console.log(FormData);

      $.ajax({
        url: "myurl",
        type: 'POST',
        dataType: 'json',
        data: JSON.stringify(FormData),
        contentType: 'application/json',
        mimeType: 'application/json',
        success: function(data) {
          alert(data.uuid);
        },
        error: function(data, status, er) {
          alert("error: " + data + " status: " + status + " er:" + er);
        }
      });
    }

<scriptsrc="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><formenctype='application/json'method="POST"name="myForm"><p><label>Company:</label><inputname='Company'value='TESTCOMPANY'></p><p><label>User Id:</label><inputname='User'value='TESTUSER'></p><p><label>Division:</label><inputtype="text"name='p1'value='12345'></p><p><label>From:</label><inputtype="text"name='p2'value='20-MAR-2016'></p><p><label>To:</label><inputtype="text"name='p3'value='22-MAR-2016'></p><inputvalue="Submit"type="submit"onclick="submitform()"></form>

Notes:

Use Javascript naming conventions, for example FormData will better be formData.

Solution 2:

Using the provided HTML structure you could get the data into the format using:

functionsubmitform(){
    var form = document.querySelector('form');
    var result = {};
    var input = form.getElementsByTagName('input');
    for(var i = 0; i < input.length; i ++) {
        var row = input[i];
        var rowName = ((row.name || '').match(/(\w+)(\[(\w+)\])?/) || []);
        var rowIndex = rowName[3];
        rowName = rowName[1];
        if(rowName) {
            var typeOfRowIndex = typeof rowIndex;
            var rowValue = row.value;
            if(typeof result[rowName] === 'undefined') {
                var rowToAdd = {};
                rowToAdd[rowIndex] = rowValue;
                result[rowName] = typeOfRowIndex === 'undefined' ? rowValue : rowToAdd;
            } elseif(typeOfRowIndex !== 'undefined') {
                result[rowName][rowIndex] = rowValue;
            }
        }
    }
    document.getElementById('output').innerHTML = JSON.stringify(result)
    console.log(result);
    returnfalse;
}

<body><formenctype='application/json'method="POST"name="myForm"><p><label>Company:</label><inputname='Company'value='TESTCOMPANY'></p><p><label>User Id:</label><inputname='User'value='TESTUSER'></p><p><label>Division:</label><inputtype="text"name='parameterMap[p1]'value='12345'></p><p><label>From:</label><inputtype="text"name='parameterMap[p2]'value='20-MAR-2016'></p><p><label>To:</label><inputtype="text"name='parameterMap[p3]'value='22-MAR-2016'></p><inputvalue="Submit"type="submit"onclick="return submitform()"></form><p>JSON Output (after clicking submit button):</p><divid="output"></div><p>Can also check console to see JSON object (after clicking submit button)</p></body>

Solution 3:

varFormData = $('form[name=myForm]').serializeArray();
FormData = JSON.stringify(FormData);

Solution 4:

I don't like jQuery, but:

var $inputs = $('form[name="myForm"]').find('input');

var res = {};
Array.prototype.forEach.call($inputs, function($item, index) {
  res[ $item.getAttribute('name') ] = $item.value;
});

varFormData = JSON.stringify(res);

alert(FormData);

<scriptsrc="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><body><formenctype='application/json'method="POST"name="myForm"><p><label>Company:</label><inputname='Company'value='TESTCOMPANY'></p><p><label>User Id:</label><inputname='User'value='TESTUSER'></p><p><label>Division:</label><inputtype="text"name='parameterMap[p1]'value='12345' ></p><p><label>From:</label><inputtype="text"name='parameterMap[p2]'value='20-MAR-2016'></p><p><label>To:</label><inputtype="text"name='parameterMap[p3]'value='22-MAR-2016'></p><inputvalue="Submit"type="submit"onclick="submitform()"></form></body>

Html5 stackoverflow Examples

How To Assign Data From Html Form(in Json Format) To Variable?

Solution 1:

Solution 2:

Solution 3:

Solution 4:

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