[javascript] Jquery get form field value

I am using a jquery template to dynamically generate multiple elements on the same page. Each element looks like this

<div id ="DynamicValueAssignedHere">
    <div class="something">Hello world</div>
    <div class="formdiv">
        <form name="inpForm">
            <input type="text" name="FirstName" />
            <input type="submit" value="Submit" />
        </form>
    </div>
</div>

I would like to use Jquery to process the form on submit. I would also like to revert the form values to their previous values if something should go wrong. My question is How can I get the value of input box using Jquery? For example, I can get the value of the div with class "something" by doing

var something = $(#DynamicValueAssignedHere).children(".something").html();

In a similar fashion, I want to be able to retrieve the value of the textbox. Right now, I tried

var text = $(#DynamicValueAssignedHere).children(".formdiv").findnext('input[name="FirstName"]').val();

but it doesn't seem to be working

An alternative approach, without searching for the field html:

var $form = $('#' + DynamicValueAssignedHere).find('form');
var formData = $form.serializeArray();
var myFieldName = 'FirstName';
var myFieldFilter = function (field) {
  return field.name == myFieldName;
}
var value = formData.filter(myFieldFilter)[0].value;

if you know the id of the inputs you only need to use this:

var value = $("#inputID").val();

var textValue = $("input[type=text]").val()

this will get all values of all text boxes. You can use methods like children, firstchild, etc to hone in. Like by form $('form[name=form1] input[type=text]') Easier to use IDs for targeting elements but if it's purely dynamic you can get all input values then loop through then with JS.

You can try these lines:

$("#DynamicValueAssignedHere .formdiv form").contents().find("input[name='FirstName']").prevObject[1].value

You can get any input field value by $('input[fieldAttribute=value]').val()

here is an example

displayValue = () => {_x000D_
_x000D_
  // you can get the value by name attribute like this_x000D_
  _x000D_
  console.log('value of firstname : ' + $('input[name=firstName]').val());_x000D_
  _x000D_
  // if there is the id as lastname_x000D_
  _x000D_
  console.log('value of lastname by id : ' + $('#lastName').val());_x000D_
  _x000D_
  // get value of carType from placeholder  _x000D_
  console.log('value of carType from placeholder ' + $('input[placeholder=carType]').val());_x000D_
_x000D_
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div class="formdiv">_x000D_
    <form name="inpForm">_x000D_
        <input type="text" name="firstName" placeholder='first name'/>_x000D_
        <input type="text" name="lastName" id='lastName' placeholder='last name'/>_x000D_
        _x000D_
        <input type="text" placeholder="carType" />_x000D_
        <input type="button" value="display value" onclick='displayValue()'/>_x000D_
        _x000D_
    </form>_x000D_
</div>

It can be much simpler than what you are doing.

HTML:

<input id="myField" type="text" name="email"/>

JavaScript:

// getting the value
var email = $("#myField").val();

// setting the value
$("#myField").val( "new value here" );