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Change readonly status of field if radio button selected, no jquery

I have a form, I want to initially have some normal fields and some readonly fields. Then a radio button with two options, if it's the default option nothing changes, if they select the second then the readonly fields become editable.
I need to do this without jquery.
Here's the form
<form name="newstock" action="newstock-save.php" method="post">
<input type="radio" name="individual" value="1" checked> Fruit<br>
<input type="radio" name="individual" value="0"> Veges<br><br>
<table>
<tr>
<td>Item name</td>
<td><input type="text" name="item_name"></td>
</tr>
<tr>
<td>Packing</td>
<td><input type="text" name="packing_name" readonly></td>
</tr>
<tr>
<td>Unit</td>
<td><input type="text" name="packing_unit" readonly></td>
</tr>
</table>
Please assist

First, add the IDs in your HTML.
<form name="newstock" action="newstock-save.php" method="post">
<input type="radio" name="individual" value="1" id="individual1" checked> Fruit<br>
<input type="radio" name="individual" value="0" id="individual0"> Veges<br><br>
<table>
<tr>
<td>Item name</td>
<td><input type="text" name="item_name"></td>
</tr>
<tr>
<td>Packing</td>
<td><input type="text" name="packing_name" id="packing_name" readonly></td>
</tr>
<tr>
<td>Unit</td>
<td><input type="text" name="packing_unit" id="package_unit" readonly></td>
</tr>
</table>
Then, get the elements with getElementById, and add EventListeners in your JS.
const individual1 = document.getElementById("individual1"),
individual0 = document.getElementById("individual0"),
packing_name = document.getElementById("packing_name"),
package_unit = document.getElementById("package_unit");
individual1.addEventListener("change", function(){
packing_name.value = '';
package_unit.value = '';
packing_name.readOnly = true;
package_unit.readOnly = true;
});
individual0.addEventListener("change", function(){
packing_name.readOnly = false;
package_unit.readOnly = false;
});
CodePen: https://codepen.io/anon/pen/vVyVGx

You can remove readonly for an element with the following two options,
Option 1:
document.getElementById('elementId').removeAttribute('readonly');
Option 2:
document.getElementById('elementId').readOnly = false;
Use any of the above code on change of the radio button.
For triggering the click event use the attribute onclick, add the below as an attribute to the input element.
onclick="callBack()"
And inside your JS,
function callBack() {
document.querySelector('input[name="individual"]:checked').value; // get the value and check it with an if condition.
}

Use document.querySelector to get selected radio value based on the value you can disable or enable any I/p field dynamically in JavaScript
For Getting Radio value
document.getElementById(“input[id=‘eleid’]:checked”).value
for enabling / disabling
document.getElementById(elem).disabled = true/false

Create textbox dynamically in td next to specified td in html table using jquery

Hello all,
I need to create textbox dynamically(depending on condition), when user clicks on employee it should get added next to employee, if user clicks on another element, it should get added next to another element
I have tried following, but I am not able to get exact td and function by which i can append textbox to it.
$("#emlpyeetd").after('<s:textfield id="employeeVal" name="employeeView.policyOrQuoteNumber" maxlength="15" style="width: 200px;" class="hideForAnotherField" theme="simple"></s:textfield>');
<td width="25%">
employee
</td>
<td id="policytd" class= "anotherfield" width="25%"></td>

Try something like this, it will remove 1st textbox when you click on 2nd option.
Jquery code
<script>
$(document).ready(function(){
$(".radio_action").click(function(){
if($(this).val() == "E" ){
$("#other_text").html("");
$("#emp_text").html("<input type='text' >");
}
else if($(this).val() == "A" ) {
$("#emp_text").html("");
$("#other_text").html("<input type='text' >");
}
})
});
</script>
HTML code
<table>
<tr>
<td><input type="radio" name="radio_type" value="E" class="radio_action" /> Employee</td>
<td id="emp_text"></td>
</tr>
<tr>
<td><input type="radio" name="radio_type" value="A" class="radio_action" /> Another Element</td>
<td id="other_text"></td>
</tr>
</table>

Html
<div>
<div class="container">
<div><input type="radio"/ name="somename" value="1">Val1</div>
<div class="editor-wrapper"></div>
</div>
<div class="container">
<div><input type="radio"/ name="somename" value="1">Val2</div>
<div class="editor-wrapper"></div>
</div>
</div>
JS
$(document).ready(function() {
$('input[name="somename"]').click(function() {
$(this.closest('.container')).find('.editor-wrapper').html($('<input>'))
});
});
jsfiddle

How do I locate elements in the same row as another in a dynamic table?

I am making a page that contains a table with a button to add a row. It is a table for users to input data, and will eventually be submitted to a database.
Currently, I have a price and a quantity field in each row. When either of them change, I want to calculate the total and write it to another cell.
This is my event handler (wrapped in $(document).ready()):
$(".quantity_input, .price_input").change(function () {
console.log(this.value);
cal_total();
});
This is my current code:
function cal_total() {
if (isNaN(parseFloat(this.value))) {
alert("You must enter a numeric value.");
this.value = "";
return;
}
var cell = this.parentNode;
var row = cell.parentNode;
var total = parseFloat($("#items_table tr").eq(row.index).find("td").eq(3).find("input").first().val()) * parseFloat($("#items_table tr").eq(row.index).find("td").eq(4).find("input").first().val());
if (!isNaN(total)) {
$("#items_table tr").eq(row.index).find("td").eq(5).html(total.toFixed(2));
}
}
And this is what the inputs look like:
<input type='text' class='fancy_form quantity_input' name='quantities[]' size='4' style='text-align:center;border-bottom:none;'>
In addition to my original question, the event is never fired. Can anyone see why?
But more importantly, is this the best way to retrieve the values? I really don't think so but I cant come up with anything more clever.
Thank you!

you have to pass paremeter to calc_total to define input or tr
try this code
$(".quantity_input, .price_input").change(function () {
$(".quantity_input, .price_input").change(function () {
cal_total(this);
});
});
function cal_total(elem){
var row=$(elem).closest("tr")
var quantity=row.find(".quantity_input").val()-0
var price=row.find(".price_input").val()-0
var total=quantity * price
row.find(".totl_input").val(total)
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr>
<td>
<input class="quantity_input" />
</td>
<td>
<input class="price_input" />
</td>
<td>
<input class="totl_input" />
</td>
</tr>
<tr>
<td>
<input class="quantity_input" />
</td>
<td>
<input class="price_input" />
</td>
<td>
<input class="totl_input" />
</td>
</tr>
<tr>
<td>
<input class="quantity_input" />
</td>
<td>
<input class="price_input" />
</td>
<td>
<input class="totl_input" />
</td>
</tr>
</table>

Delete button is not working

Html Table:
<table width="100%" border="0" cellspacing="0" cellpadding="0" id="table-data">
<tr>
<td>Name</td>
<td>Location</td>
<td>From</td>
<td>To</td>
<td>Add</td>
</tr>
<tr class="tr_clone">
<td><input type="text" placeholder="who" name="who" /></td>
<td><input type="text" placeholder="location" name="location" /></td>
<td><input type="text" placeholder="Start Date" name="datepicker_start" class="datepicker"/></td>
<td><input type="text" placeholder="End Date" name="datepicker_end" class="datepicker"/></td>
<td><input type="button" name="add" value="Add" class="tr_clone_add"/></td>
<td><input type="button" value="Delete" onclick="deleteRow(this)"/></td>
</tr>
</table><!-- /table#table-data -->
Javascript:
$("input.tr_clone_add").live('click', function() {
var $tr = $(this).closest('.tr_clone');
var $clone = $tr.clone();
$clone.find(':text').val('');
$tr.after($clone);
});
function deleteRow(r)
{
var i = r.parentNode.parentNode.rowIndex;
document.getElementById("table-data").deleteRow(i);
}
Here is my fiddle:
http://jsfiddle.net/tejdeep/b6A9R/
This code is cloning first two cells of a table row. I have add and delete button for every row.
I want this as like this:
http://jsfiddle.net/nKkhW/5/
Add button wants to be there for the cloning row and delete button should be there for the cloned row.
I want to include the functionality while cloning first two cell values has to come to the cloned row?
Let me know if you have doubts in this question.

What I have understood by your question, on that basis I have created Fiddle. Hope it will help you,except the default value case.
Updated fiddle
To delete row, you can try:
var $actualrow = $(this).closest('.tr_clone');
$actualrow.remove();

<input type="button" value="Delete" onclick="deleteRow(this)"/>
The problem is, where is your deleteRow() ? it's not in your fiddle..
fixed : http://jsfiddle.net/b6A9R/5/
and you have to change onLoad to No wrap, otherwise your function will not work.

Here is the updated code for onLoad.
JS
$(document).on('click','input[value="Delete"]',function(){
deleteRow(this);
});
DEMO

Creating a new form on click of link

How could I make it so the code below retains what it does now but does the following:
a) When the add menu link/button is clicked it shows the bookingName menu div and the same item and qty boxes
b) When the above happens it also needs the abilty to add more rows to that particular just added menu
Demo of current work
jQuery:
$(document).ready(function () {
$('<tr/>', {
'class': 'menuDetails',
html: getMenuHTMLDetails()
}).appendTo('#addMoreItemsButton');
$('#addItem').click(function () {
$('<tr/>', {
html: getMenuHTMLDetails()
}).hide().appendTo('.menuDetailsBlock').slideDown('slow');
});
})
function getMenuHTMLDetails() {
var $clone = $('.menuDetails').clone();
$clone.find('[name="item[]"]')[0].name = "item";
$clone.find('[name="qty[]"]')[0].name = "qty";
return $clone.html();
}
HTML:
<div class="formBlock">
<p><span class="bookingName">Menu<span class="required">*</span></span><span class="bookingInput"><input type="text" name="menu"/></span></p>
</div>
<div class="formBlock">
<table class="menuDetailsBlock">
<tr>
<td><span class="bookingName">Item<span class="required">*</span></span></td>
<td><span class="bookingName">QTY<span class="required">*</span></td>
</tr>
<tr class="menuDetails">
<td><span class="bookingInput"><input type="text" name="item[]" /></td>
<td><input type="number" name="qty[]" style="width: 50px"></span></td>
</tr>
<tr>
<td><span class="bookingInput"><input type="text" name="item[]" /></td>
<td><input type="number" name="qty[]" style="width: 50px"></span></td>
</tr>
<tr>
<td><span class="bookingInput"><input type="text" name="item[]" /></td>
<td><input type="number" name="qty[]" style="width: 50px"></span></td>
</tr>
</table>
<div class="appendMoreItems"></div>
</div>
<div class="formBlock">
Add Item Add Menu
</div>
</div>

The first thing you should be aware of is that your html is invalid. You can't have something like:
<td><span>...</td><td>...</span></td>
Because this form needs the ability to be duplicated, you need to remove all IDs (and ideally change to them classes). e.g. id="addMenu" -> class="addMenu".
Instead of using your standard click handler, you should use delegates to handle any clicks within your outer container - read http://api.jquery.com/on/.
As for your duplication problem, place a template of your elements to be duplicated inside a script tag with an id you can reference and clone (with .html()), or, even better, consider looking into http://handlebarsjs.com/ or http://akdubya.github.io/dustjs/.