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How to get the value of the input fill

I want to get the value of the input fill from a function to another function but I am not sure how.
From this funtion input fill:
$("#buttonDone4").click(function () {
function productAddToTable() {
$("#table").fadeIn();
// First check if a <tbody> tag exists, add one if not
if ($("#table tbody").length == 0) {
$("#table").after("<tbody></tbody>");
}
// Append product to the table
$("#table").append(
"<tr>" +
"<td>" + document.getElementById("perimeter2").innerHTML + "</td>" +
"<td>" + "4" + "</td>" +
"<td>" + "<input type='text' name='periAns' size='10'/>" + "</td>" +
"</tr>"
);
}
productAddToTable();
$("#buttonDone4").fadeOut();
$(".p1").fadeIn();
$("#buttonCheck").fadeIn();
});
To this function:
$("#buttonCheck").click(function () {
var pa = document.getElementByName["periAns"].value;
var peri = (document.getElementById("perimeter2").innerHTML / 4);
if(peri == pa ){
console.log("yes");
}else{
console.log("no");
}
});

Put ID to the inputs and use jquery.
$("#table").append(
"<tr>" +
"<td>" + document.getElementById("perimeter2").innerHTML + "</td>" +
"<td>" + "4" + "</td>" +
"<td>" + "<input type='text' id ='periAns' size='10'/>" + "</td>" +
"</tr>"
);
}
$("#buttonCheck").click(function () {
var pa = Number($("#periAns").val()) //assuming this is an input
var peri = Number(document.getElementById("perimeter2").innerHTML)
var finPeri = peri / 4
if(finPeri == pa ){
console.log("yes");
}else{
console.log("no");
}
});

Pushing to null array, even though it is called as a global and works in my localhost, but not on the server

I'm getting the following error in my javascript. As the title states, this code is working on my localhost, but not when I put it onto my server
Uncaught TypeError: Cannot read property 'push' of null
at addItemToCart (shoppingCart.js:36)
at HTMLButtonElement.<anonymous> (shoppingCart.js:193)
at HTMLDocument.dispatch (jquery-1.11.1.min.js:3)
at HTMLDocument.r.handle (jquery-1.11.1.min.js:3)
I have identified that just before this push function is called that the cart variable is indeed null, but I declare it globally as an empty array, so I'm not sure why that would be.
Code for the function its failing on
var cart = [];
function addItemToCart(name, price, count, id, shortName) {
for (var i in cart) {
if (cart[i].id === id) {
cart[i].count += count;
saveCart();
for (var i in cart) {
if (cart[i].id == 500 && id != 500) {
removeItemFromCart(500);
alert('because you changed your cart, you will have to reapply your coupon');
}
}
return;
}
}
for (var i in cart) {
if (cart[i].id == 500 && id != 500) {
removeItemFromCart(500);
alert('because you changed your cart, you will have to reapply your coupon');
}
}
var item = new Item(name, price, count, id, shortName);
console.log(cart);
cart.push(item);
saveCart();
}
The error happens at teh cart.push(item); line because cart is null and can not be pushed to. Anymore information someone may need to help feel free and I will shoot it your way.
Thanks in advance!!!
edit:
function displayCart() {
console.log("*** display Cart ***");
var cartArray = listCart();
var output = "<tr><th>Items</th><th>Quantity</th><th>Price</th></tr>";
var output2 = "<tr><th> </th><th>Product name</th><th>Product price</th><th>Quantity</th><th>Total</th></tr>";
var output3 = " <tr><th>Product(s)</th></tr>";
var output4 = "";
console.log(listCart());
for (var i in cartArray) {
output += "<tr class='item'><td><div class='delete' id='removeItem' data-id='" + cartArray[i].id + "'></div>" + cartArray[i].name + "</td><td><input type='text' value='" + cartArray[i].count + "' readonly></td> <td class='price'>" + cartArray[i].price + "</td></tr>"
output2 += "<tr class='item'>"
+ "<td class='thumb'><a href='" + cartArray[i].id + "-item.php'><img src='img/catalog/product-gallery/" + cartArray[i].id + ".png' alt='Product Image'/></a></td>"
+ "<td class='name'><a href='" + cartArray[i].id + "'-item.php'>" + cartArray[i].name + "</a></td>"
+ "<td class='price'>$" + cartArray[i].price + "</td>"
+ "<td class='qnt-count'>"
+ "<a class='incr-btn' href='#' id='oneless' data-id='" + cartArray[i].id + "'>-</a>"
+ "<input class='quantity form-control' type='text' value=' " + cartArray[i].count + " '>"
+ "<a class='incr-btn' id='onemore' data-productid='" + cartArray[i].id + "' data-name='" + cartArray[i].name + "' data-quantity='" + cartArray[i].count + "' href='#'>+</a>"
+ "</td>"
+ "<td class='total'>$<em id='test'>" + cartArray[i].total + "</em></td>"
+ "<td class='delete' id='removeAllFromCart' data-id='" + cartArray[i].id + "'><i class='icon-delete'></i></td>"
+ "</tr>";
output3 += " <tr><td class='name border'>" + cartArray[i].shortName + "<span>x" + cartArray[i].count + "</span></td>"
+ "<td class='price border'>$" + cartArray[i].total + "</td></tr>";
if ($("#offerCount").attr("data-id") == cartArray[i].id) {
output4 += +"<a class='incr-btn' href='#' id='oneless' data-id='" + cartArray[i].id + "'>-</a>"
+ "<input class='quantity form-control' type='text' value=' " + cartArray[i].count + " '>"
+ "<a class='incr-btn' id='onemore' data-productid='" + cartArray[i].id + "' data-name='" + cartArray[i].name + "' data-quantity='" + cartArray[i].count + "' href='#'>+</a>";
}
}
output3 += " <tr><td class='th border'>Shipping</td><td class='align-r border'>Free shipping</td></tr>"
+ "<tr><td class='th'>Order total</td><td class='price'>$" + totalCart() + "</td></tr>"
$("#offerCount").html(output4);
$("#productDisplay").html(output3);
$("#showFullCart").html(output2);
$("#showCart").html(output);
$("#cartTotal").html(totalCart());
$("#totalCart").html(totalCart());
$("#myCartTotal").html(totalCart());
$("#showmyTotal").html(totalCart());
$("#cartCount").html(countCart());
}
function addCouponToCart(coupon) {
if (coupon == 'coupon10' && couponsAdded == 0) {
var couponReduce = -(totalCart() * .1).toFixed(2);
addItemToCart('10% off Coupon', couponReduce, 1, 500, '10% off');
couponsAdded += 1;
saveCoupon();
}
displayCart();
}
function countCart() {
var totalCount = 0;
for (var i in cart) {
totalCount += cart[i].count;
}
return totalCount;
}
function removeItemFromCartAll(id) {
for (var i in cart) {
if (cart[i].id === id) {
cart.splice(i, 1);
break;
}
}
for (var i in cart) {
if (cart[i].id == 500 && id != 500) {
removeItemFromCart(500);
alert('because you changed your cart, you will have to reapply your coupon');
}
}
saveCart();
}
Code that calls the addCouponToCart Function whenever a post gets set.
<?php if (isset($_POST['coupon_code'])) { ?>
<script>
addCouponToCart(coupon);
</script>
<?php } ?>

#codenoname Provided the correct answer of checking for the null cart. That solved the issue, ultimately a lot of functions were not being defined properly. I had wrapped the entire code in a document ready function which seemed to be the issue. Whenever I removed that it worked. Thank you all for your input.
if (!cart) {
cart = [];
}

how to find the divs specific Nth siblings of child divs positions

i create new hours calendar. as per the IMAGE1 when user click on any of div that dynamic Span was created up to 8 hours.
i.e. if click on 00:00 its design up to 08:00 hours
so my question is how to get that specific siblings 8th divs child position.
Or any other way please suggest me.
$(this).eq(+8).attr("id");
IMAGE1
Table Design Code when ajax return Success:
$(r.emp_nm).each(function (index) {
tabelBody += "<tr><td style='width:10%'><div class='col-xs-3 col-md-3 on-break-tab'>" + this.fname.charAt(0) + this.lname.charAt(0) + "</div>" + this.fname + ' ' + this.lname + " </td>";
for (var i = 0; i < 24; i++) {
var tabelsubBody = "";
var p = 15;
var t_id = r.hours[i];
for (var j = 0; j < 4; j++) {
tabelsubBody += "<div style='float:left; width:25%;height:inherit;' class='Dropablesub_td' data-employeID='" + this.id + "' data-date='" + t_id + "' id='" + t_id + "_" + this.id + "_" + j + "'></div>";
}
if (i === 23) {
tabelBody += "<td style='width:12.5%' class='Dropabletd' data-employeID='" + this.id + "' data-date='" + t_id + "' id='" + t_id + "_" + this.id + "'>" + tabelsubBody + "</td></tr>";
} else {
tabelBody += "<td style='width:12.5%' class='Dropabletd' data-employeID='" + this.id + "' data-date='" + t_id + "' id='" + t_id + "_" + this.id + "'>" + tabelsubBody + "</td>";
}
}
});
$("#tabelBody").html(tabelBody);
$("#tdDate").html(r.today);
$("#SelectDate").val(r.today);
$("#currentSelect").val("Days");
Events();
And Events() is :
function Events() {
$("body").on("click", ".Dropablesub_td", function () {
var hidid = $(this).attr("id");
var Myleft = $(this).position().left;
var Mytop = $(this).position().top;
alert($(this).eq(+8).attr("id"));
$(this).append("<span id='" + hidid + "' class='divId label label-success ui-widget-content filediv unselectable' >ABCDEFGHIJKLMNOPQRSTUVWXYZ<span>");
$(this).children(
).css({zIndex: 999, position: "absolute", top: Mytop, left: Myleft, width: '40%', display: "block", border: "#808080 solid 2px", color: "black", background: "#00CEB4"});
});
}

You can get the desired element using .index() of current element and then using .eq() to target the next element.
Here in the snippet I have created a pseudo code for demonstration
$(document).on("click", ".dropabletd", function() {
var tr = $(this).closest('tr');
var tds = tr.find('td');
var index = tds.index(this);
var sibling = tds.eq(index + 8);
console.log($(this).attr('id'), sibling.attr('id'));
});
createTable();
function createTable() {
var tabelBody = ""
for (var i = 0; i <= 23; i++) {
tabelBody += "<td class='dropabletd' id='id" + i + "'>" + i + "</td>";
}
$("table tr").html(tabelBody);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr></tr>
</table>

javascript find delta of modified form data

I have an html and javascript page rendered through python django, where I have a form data of 30 entries maximum in each page, that can be edited. I included a hidden field with the same form data to extract the old, and modified values in the form. I am looking for extracting just the delta (old and new values for the field that was changed). My code is
{%extends 'base.html'%}
{%block content%}
<h4> Search results</h4>
<p id="data"></p>
<style>
table, th, td {
border: 1px solid black;
border-collapse: collapse;
}
th, td {
padding: 5px;
}
</style>
<script>
function onEdit(btn)
{
var id=btn.id;
var before = '';
var after = '';
var input = document.getElementsByName("new"+id);
if(btn.value=="Edit") {
//var input = document.getElementsByName("name"+id);
for(i = 0;i < input.length; i++) {
document.getElementById(input[i].id).removeAttribute("Readonly");
} //End of for loop
document.getElementById(id).value="Save";
return false;
}
if(btn.value=="Save") {
for(i = 0;i < input.length; i++) {
document.getElementById(input[i].id).setAttribute("Readonly", "readonly");
}
document.getElementById(id).value="Edit";
return false;
}
} // End of Function onEdit()
{% autoescape off %}
var data = {{ search|safe }}; //search is the key defined in django view and will be substituted with the json value
{% endautoescape %}
text = ''
var out = '<form name="display" id="update" method="post" action="update/">';
out += "<table style=\"width:50%\">";
out += "<tr>";
out += "<th>Domain</th>";
out += "<th>Points to</th>";
out += "<th>Type</th>";
out += "<th>TTL</th>";
out += "<th>MX priority</th>";
out += "<th>Recorded generated on</th>";
out += "<th></th>";
out += "</tr>";
var i
var id = 0;
for ( var i = 0; i < data.records.length; i++) {
id = id + 1;
out += "<tr><td>" +
"<input readonly='readonly' name='new" + id + "' id='" + data.records[i].domain + "' value='" + data.records[i].domain + "'type='text'/>" +
"<input type='hidden' name='old" + id + "' id='" + data.records[i].domain + "' value='" + data.records[i].domain + "'type='text'/>" +
"</td><td>" +
"<input readonly='readonly' name='new" + id + "' id='" + data.records[i].record_points_to + "' value='" + data.records[i].record_points_to +"'type='text'/>" +
"<input type='hidden' name='old" + id + "' id='" + data.records[i].record_points_to + "' value='" + data.records[i].record_points_to + "'type='text'/>" +
"</td><td>" +
data.records[i].record +
"</td><td>" +
"<input readonly='readonly' name='new" + id + "' id='" + data.records[i].ttl + "' value='" + data.records[i].ttl + "'type='text'/>" +
"<input type='hidden' name='old" + id + "' id='" + data.records[i].ttl + "' value='" + data.records[i].ttl + "'type='text'/>" +
"</td><td>" +
data.records[i].priority_mx +
"</td><td>" +
data.records[i].generated_on +
"</td><td>" +
"<input id='" + id + "' value='Edit' onclick='return onEdit(this)' type='button'/>" +
"</td></tr>";
}
out += "</table>"
total = data.meta.total_records
page = data.meta.page
records_returned = data.records.length
records_shown = ((data.meta.page - 1) * 30) + data.records.length
out += records_shown + " returned of " + total
page = data.meta.page + 1
link = window.location.href
out += "<input type='hidden' name='currenturl' value='" + link + "'>"
if (records_shown == total){
out += " End "
}
else{
url ="<a href='" + updateQueryStringParameter(link, "page", page) + "'> Next"
out += url
}
function updateQueryStringParameter(uri, key, value) {
var re = new RegExp("([?&])" + key + "=.*?(&|$)", "i");
var separator = uri.indexOf('?') !== -1 ? "&" : "?";
if (uri.match(re)) {
return uri.replace(re, '$1' + key + "=" + value + '$2');
}
else {
return uri + separator + key + "=" + value;
}
}
//out += '<input style="position: relative; left: 550px;" type="submit" value="Submit">';
out += '<br>'
out += '<button type="submit" class="btn btn-default">Submit</button>'
out += '</form>';
document.getElementById("data").innerHTML = out
</script>
{%endblock%}
What is the best way to do this?

AngularJS: function not defined error when html is generated from Javascript

I amd dynamically generating my edit table from javaScript. But function mentioned via it are not recognaizeable from AngularJS, for that, I am not able to remove and edit my rows.
Here HvacStandards() and checkemail() and showInvite() are only working. for other's i am getting following exception in chorom console:
Errors:
Uncaught ReferenceError: editRow is not defined
Uncaught ReferenceError: deleteRow is not defined
AngularJs code
$scope.HvacStandards = function () {
var rowID = $scope.newRow;
if ($scope.currentRow > 0) {
saveEdits();
} else {
var teamName = $("#teamName").val();
var email = $("#email").val();
var sHtml = "<tr id='row"+rowID+"'>"
+ "<td id=\"tno" + rowID + "\">" + rowID
+ "</td>"
+ "<td id=\"tName" + rowID + "\">" + teamName
+ "</td>" + "<td id=\"mail" + rowID + "\">" + email
+ "</td>" + "<td><button onclick='editRow(" + rowID
+ ")'>Edit</button> " + "<button onclick='deleteRow("
+ rowID + ")'>Delete</button>" + "</tr>";
$("#inviteTable").append(sHtml);
$scope.newRow++;
$("#teamName,#email").val("");
$scope.emails[$scope.number]=$scope.formData.email;
}
};
$scope.editRow = function(rowID) {
$('#teamName').val($('#tName' + rowID).html());
$('#email').val($('#mail' + rowID).html());
$scope.currentRow = rowID;
};
$scope.saveEdits = function (){
$('#teamName' + currentRow).html($('#tName').val());
$('#email' + currentRow).html($('#mail').val());
$("#teamName,#email").val("");
$scope.currentRow = -1;
};
$scope.deleteRow = function (rowID) {
$('#row' + rowID).remove();
};
$scope.showInvite = function(){
$scope.show = true;
$scope.formData = {};
};
and my html is like following:
<div name="showInviteDiv" id="showInviteDiv">
<a ng-click="showInvite()" ng-show="!show">Invite a Team</a>
</div>
<div class="invite-form" name="inviteTeamDiv" id="inviteTeamDiv" ng-show="show">
<form ng-submit="HvacStandards()" novalidate class="css-form"
name='inviteTeamsForm'>
<div>
<input type="text" name="teamName" ng-model="formData.teamName" id="teamName"
placeholder="Team Name" style="width: 38%;" required="required"
ng-minlength="6" ng-maxlength="30">
<input
type="text" name="email" ng-model="formData.email" id="email"
placeholder="Email" style="width: 38%;" required="required"
ng-pattern="/^[a-z]+[a-z0-9._]+#[a-z]+\.[a-z.]{2,5}$/" ng-change="checkEmail(form Data.email)" ng-blur="checkEmail(formData.email)">
</div>
<div>
<input type="submit" value="Invite Team"
ng-disabled="inviteTeamsForm.$invalid || isEmailExists"> or <a ng-click="hideInvite()">I'm done sending invites</a>
</div>

In the Table that you are creating, you used onclick instead of ng-click. You need to use ng-click in order to use scope function.
So your HvacStandards function will look like this:
$scope.HvacStandards = function () {
var rowID = $scope.newRow;
if ($scope.currentRow > 0) {
saveEdits();
} else {
var teamName = $("#teamName").val();
var email = $("#email").val();
var sHtml = "<tr id='row"+rowID+"'>"
+ "<td id=\"tno" + rowID + "\">" + rowID
+ "</td>"
+ "<td id=\"tName" + rowID + "\">" + teamName
+ "</td>" + "<td id=\"mail" + rowID + "\">" + email
+ "</td>" + "<td><button ng-click='editRow(" + rowID
+ ")'>Edit</button> " + "<button ng-click='deleteRow("
+ rowID + ")'>Delete</button>" + "</tr>";
$("#inviteTable").append(sHtml);
$scope.newRow++;
$("#teamName,#email").val("");
$scope.emails[$scope.number]=$scope.formData.email;
}
};

$scope.HvacStandards = function () {
var rowID = $scope.newRow;
if ($scope.currentRow > 0) {
saveEdits();
} else {
var teamName = $("#teamName").val();
var email = $("#email").val();
var sHtml = "<tr id='row"+rowID+"'>"
+ "<td id=\"tno" + rowID + "\">" + rowID
+ "</td>"
+ "<td id=\"tName" + rowID + "\">" + teamName
+ "</td>" + "<td id=\"mail" + rowID + "\">" + email
+ "</td>" + "<td><button ng-click='editRow(" + rowID
+ ")'>Edit</button> " + "<button ng-click='deleteRow("
+ rowID + ")'>Delete</button>" + "</tr>";
//$("#inviteTable").append(sHtml); // don't do this
// use compile in following manner
$("#inviteTable").append(
$compile(sHtml)($scope)
);
$scope.newRow++;
$("#teamName,#email").val("");
$scope.emails[$scope.number]=$scope.formData.email;
}
};

try this
$scope.HvacStandards = function () {
var rowID = $scope.newRow;
if ($scope.currentRow > 0) {
saveEdits();
} else {
var teamName = $("#teamName").val();
var email = $("#email").val();
var sHtml = "<tr id='row"+rowID+"'>"
+ "<td id=\"tno" + rowID + "\">" + rowID
+ "</td>"
+ "<td id=\"tName" + rowID + "\">" + teamName
+ "</td>" + "<td id=\"mail" + rowID + "\">" + email
+ "</td>" + "<td><button ng-click='editRow(" + rowID
+ ")'>Edit</button> " + "<button ng-click='deleteRow("
+ rowID + ")'>Delete</button>" + "</tr>";
// $compile(sHtml)($scope) aissign to variable:
let shown = $compile(sHtml)($scope);
$("#inviteTable").append(
shown;
);
$scope.newRow++;
$("#teamName,#email").val("");
$scope.emails[$scope.number]=$scope.formData.email;
}
};