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How to retrieve shopping cart items, implementing LocalStorage

How do I retrieve information stored in a js file? I assume I am labelling my node elements in HTML incorrectly
I'm hoping to gain a better understanding of how to retrieve a function node from localStorage
Below are the key factors I am trying to get using getElementById into local storage from post HTML.
This is not everything in my listing.html document, I have excluded everything but what I think are essential elements
<div class="listing">
<div class="container-form">
<div class="mySlides fade">
<div class="numbertext">1 / 3</div>
<img class="img" value(src)="1" id="img" src="images/4.JPG" alt="img1">
</div>
<div class="infoBox">
<h5 post="weight" id="weight" value="7.00">7.00 : Under - 16 oz</h5>
</div>
<div class="column-bottom">
<div class="add-button">
<div class="add-button" method="post">
<p><input type="submit" onclick="addListing()" class="btn"></input></p>
<div class="buy-button">
<span class="price" post="price" id="price" value="60">$60</span>
<button type="button" class="btn" onclick="window.location.href='cart.html'" onclick="addListing()"
;>BuyMe</button>
</div>
</div>
</div>
</div>
</div>
</div>
I am trying to use the function below to store each element from the post HTML
function addlisting() {
let listing = ['listings'];
if (localStorage.getItem('listings')) {
listing = JSON.stringify(localStorage.getItem('listings'));
alert("added!");
}
listing.push({ 'listingId': listingId + 1, image: '<imageLink>' });
listingsId = listingsId + 1;
var listingsName = document.getElementById('name').innerHTML;
var listingsPrice = document.getElementById('price').getAttribute('data- value');
var listingsImage = document.getElementById("img").src;
var listingsWeight = document.getElementById('weight').getAttribute('data- value');
value = parseFloat(listingsPrice, listingsWeight).toFixed(2);
localStorage.getItem('name', 'price', 'img', 'weight', JSON.stringify(listingsName, listingPrice, listingsImage, listingsWeight));
}
here is the $(document).ready(function(){ function I'm hoping to implement into my code, I got this from another Stack Overflow page as it was the most fitting however I am yet to understand each component.
$(document).ready(function () {
$('#Btn').load(function () {
let listings = [];
if (localStorage.getItem('listings')) {
listings = JSON.parse(localStorage.setItem('listings'));
}
listings.push({ 'listingId': 1, image: '<imageLink>' });
});
});
my question again is how do I then execute this function using onload Onto a separate HTML, called cart.html. I did not display my cart.html file because there is nothing pertaining to this question on it. And furthermore how to go about styling Onload events that retrieve information from localStorage.
P.S.
There is an alert function within my first .js excerpt addListing(), that does not fire when clicked. probably a sign of bad programming. I've just never found a straightforward answer

Retain scroll position when a button is toggled

I am working on an angularJS application which has a page where I display around 30 items using ng-repeat. In front of each item, there is a toggle button (enabled/disabled). With the current code that I have, I can toggle these items. But the problem is if I scroll down and toggle lets say item 25, then automatically it scrolls to the top of the page. If I now scroll down, I can see that the toggle actually took place.
So the requirement now is to make sure that the scroll position is retained after the toggle button is clicked.
Please see below the code that I have.
HTML
<div id="eventTypes" class="panel-body">
<div ng-if="!spinner" ng-repeat="item in items" class="panel-body">
<div class="row">
<div class="col-md-9">{{item.itemName)}}</div>
<div class="col-md-3">
<input id="toggleEnabled"
type="button"
ng-class="{'btn-primary': item.enabled}"
value="{{item.enabled ? 'enabled' : 'disabled'}}"
ng-click="toggleEnabled(item)">
</div>
</div>
</div>
<div ng-if="spinner" class="spinner">
<div class="spinner-container container1">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
<div class="spinner-container container2">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
<div class="spinner-container container3">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
</div>
</div>
JS
(function () {
'use strict';
angular.module('myApp').controller('itemsController', function ($scope, itemsService) {
var serviceError = function (errorMsg) {
console.log(errorMsg);
$scope.turnOffSpinner();
};
$scope.items = [];
$scope.item = {};
$scope.spinner = true;
$scope.toggleEnabled = function (item) {
$scope.turnOnSpinner();
itemsService.toggleEnabled(item)
.then(function () {
$scope.loaditems();
});
};
$scope.loaditems = function () {
itemsService.getitems().then(function (response) {
$scope.items = response.data;
}, serviceError);
$scope.turnOffSpinner();
};
$scope.turnOnSpinner = function () {
$scope.spinner = true;
};
$scope.turnOffSpinner = function () {
$scope.spinner = false;
};
$scope.loaditems();
});
}());
How this works right now is, once I click the toggle button, a spinner is enabled. Meanwhile the controller will call the itemService.toggleEnabled() method which does an ajax call to the server to just change the status of the item(enabled to disabled or vice-versa) in the backend. On successful change of the status and when the ajax call returns, the $scope.loadItems() method is called in the controller. This method will then do another ajax call to fetch the items (now with the updated status of the item that was toggled). The spinner is disabled and the data is then displayed on the UI.
When all of this is done, the page is scrolled to the top. This is annoying when I want to toggle an item which is way down in the list.
I want the page to be present at the same position when I clicked the toggle button of the corresponding item and not scrolling up to the top.
I am new to AngularJS and any help in this regard would be really helpful.

It looks like your spinner scheme is what's causing you problems:
...
<div ng-if="!spinner" ng-repeat="item in items" class="panel-body">
...
<div ng-if="spinner" class="spinner">
...
Whenever you click your button, you are removing every single element in your ng-repeat from the DOM when you $scope.turnOnSpinner(). That's why it appears to jump to the top. It's not really jumping, there just aren't enough DOM elements to fill up the page, making the page so short that the scrollbar disappears (even if it's only for a second). Then when the spinner is done, your ng-repeat fills up the page with DOM elements again, resulting in your scroll position being lost.
So basically what you are trying to fix is a symptom of a less than ideal loading spinner implementation.
ng-if is a "brutal" way of hiding things in Angular. It's mostly meant to hide things for a longer period of time than "softer" directives like ng-show/ng-hide. One solution to your problem is to use ng-disabled on each one of your buttons to prevent the user from interacting with it while the spinner is active, rather than doing a hard removal of each element:
Before:
<div ng-if="!spinner" ng-repeat="item in items" class="panel-body">
<div class="row">
<div class="col-md-9">{{item.itemName)}}</div>
<div class="col-md-3">
<input id="toggleEnabled"
type="button"
ng-class="{'btn-primary': item.enabled}"
value="{{item.enabled ? 'enabled' : 'disabled'}}"
ng-click="toggleEnabled(item)">
</div>
</div>
</div>
After:
<div ng-repeat="item in items" class="panel-body">
<div class="row">
<div class="col-md-9">{{item.itemName)}}</div>
<div class="col-md-3">
<input id="toggleEnabled"
ng-disabled="spinner"
type="button"
ng-class="{'btn-primary': item.enabled}"
value="{{item.enabled ? 'enabled' : 'disabled'}}"
ng-click="toggleEnabled(item)">
</div>
</div>
</div>
Another solution, which I really like and use myself is this Angular module: https://github.com/darthwade/angular-loading
You can attach it to any element in the page and it will put a loading spinner over it and prevent you from interacting with it until your ajax or whatever is done.
If you don't like either of those, try putting your ng-repeat into a container that you can use to prevent interaction with your elements when the spinner is up:
<div class="container" ng-class="{'you-cant-touch-this': spinner}">
<div ng-repeat="item in items" class="panel-body">
<div class="row">
<div class="col-md-9">{{item.itemName)}}</div>
<div class="col-md-3">
<input id="toggleEnabled"
type="button"
ng-class="{'btn-primary': item.enabled}"
value="{{item.enabled ? 'enabled' : 'disabled'}}"
ng-click="toggleEnabled(item)">
</div>
</div>
</div>
</div>
Now you can style it in some way to prevent interaction without having to remove all those items from the DOM:
.you-cant-touch-this {
pointer-events: none;
}

Create custom follow button for my application

I would like a directive that dynamically knows if I'm following the user in my App.
I have a resource to get the currentUser
this.following = function () {
var defer = $q.defer();
var user = $cookies.getObject('currentUser');
UserResource.get({id: user.id}).$promise.then(
function (data) {
defer.resolve(data.following);
});
return defer.promise;
};
This is in one of my services. It returns all users that I'm following.
When instantiating my controller I fetch the users I follow within my app:
UserService.following().then(
function (data) {
$scope.following = data;
});
I would like to move that into a directive so that I can easily reuse it somewhere else in my app.
This is the HTML I am using right now (and it's not really beautiful) :
<div class="item" ng-repeat="user in users">
<div class="right floated content">
<div ng-show="isFollowing(user)" class="ui animated flip button" tabindex="0"
ng-click='unFollow(user)'>
<div class='visible content'>
Following
</div>
<div class="hidden content">
Unfollow
</div>
</div>
<div ng-hide="isFollowing(user)" ng-click="follow(user)" class="ui button">Follow</div>
</div>
</div>
But instead something like :
<div class="item" ng-repeat="user in users">
<um-follow-button um-user="user"></um-follow-button>
</div>
then depending if I'm following the user or not then render one of the two options.
I don't know if I will have to use a controller in my directive.
I have looked at : https://gist.github.com/jhdavids8/6265398
But it looks like a mess.

Combining results from WP-API using AngularJS

I currently have this site - http://dev.5874.co.uk/scd-data/ where I have a dropdown which displays results from WP-API which I am pulling in through AngularJS.
It currently combines the two sets of results as they're separate URL's, the results are in categories within a custom post type so if both posts are 'tagged' in the same category chosen they display twice. I need a way to combine the two sets of results but only showing one of the posts - I hope this makes sense. I'm very new to API data and AngularJS and I imagine there is a much simpler way of doing this. Any help would be much appreciated. Here is a snippet of my code to show how it's currently working.
Thanks in advance!
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
<style>
.desc {display: none;}
</style>
<script type="text/javascript">
$(function(){
$('.selectOption').change(function(){
var selected = $(this).find(':selected').text();
//alert(selected);
$(".desc").hide();
$('#' + selected).show();
}).change()
});
</script>
<script>
var app = angular.module('myApp', []);
app.controller('northWestCtrl', function($scope, $http) {
var url = 'http://scd.blaze.wpengine.com/wp-json/posts?type=listings&filter[listing_area]=northwest';
$http.get(url).then(function(data) {
$scope.data = data.data;
});
});
</script>
<select class="selectOption">
<option>Search by Region</option>
<option>NorthWest</option>
<option>NorthEast</option>
<option>Midlands</option>
<option>EastAnglia</option>
<option>SouthEast</option>
<option>SouthWest</option>
<option>Scotland</option>
<option>Wales</option>
<option>NorthernIreland</option>
<option>ChannelIslands</option>
</select>
<div id="changingArea">
<body ng-app="myApp">
<div id="NorthWest" class="desc">
<div ng-controller="northWestCtrl">
<div ng-repeat="d in data">
<h2 class="entry-title title-post">{{d.title}}</h2>
<img src="{{d.acf.logo}}">
<div id="listing-contact">Contact: {{d.acf.contact}}, {{d.acf.position}}</div>
<div id="listing-address-1">
{{d.acf.address_1}}, {{d.acf.address_2}} {{d.acf.address_3}} {{d.acf.town}} {{d.acf.county}} {{d.acf.postcode}}
</div>
<div id="listing-phone">Telephone: {{d.acf.telephone}}</div>
<div id="listing-mobile">Mobile: {{d.acf.mobile}}</div>
<div id="listing-email">Email: {{d.acf.email}}</div>
<div id="listing-website">Website: {{d.acf.website}}</div>
<div id="listing-established">Established: {{d.acf.established}}</div>
<div id="listing-about">About: {{d.acf.about}}</div>
<div id="listing-mailingaddress">Mailing Address: {{d.acf.mailing_address_}}, {{d.acf.mailing_address_2}}, {{d.acf.mailing_address_3}}, {{d.acf.mailing_town}}, {{d.acf.mailing_county}}, {{d.acf.mailing_postcode}}</div>
<div id="listing-directions">Directions: {{d.acf.directions}}</div>
<div id="scd-link">View on The Shooting Club Directory</div>
</div>
</div>
</div>
</body>
</div>
Here is a working code pen - http://codepen.io/anon/pen/yePYdq

Angular is a great JavaScript front-end framework to choose, and you're off to a good start, but a lot of changes could be made. I've made some suggested changes for easier ways to do things below.
See this CodePen for all changes.
It looks like you've grasped the idea of ng-repeat, but there's definitely a lot of repeated HTML and JS in your view and controller, so let's see if we can do better.
Let's try this without jQuery to avoid direct manipulation of the DOM. And instead of many controllers, we can do this with a single controller.
<div ng-app="MyApp">
<div ng-controller="MyController">
...
</div>
</div>
<script type="text/javascript">
var app = angular.module('MyApp', []);
app.controller('MyController', ...);
</script>
For the dropdown, we'll use ng-repeat in our view and display the names of the shooting types from our model
...
<select ng-model="selectedListing">
<option
ng-repeat="listingShootingType in listingShootingTypes"
value="{{listingShootingType.name}}">
{{listingShootingType.name}}
</option>
</select>
...
<script type="text/javascript">
...
// Our selections/filters
$scope.listingShootingTypes = [
'All',
'Air Rifle/Air Pistol',
'Clay',
'ABT',
'Double Trap',
'English Skeet',
'English Sporting',
'Fitasc',
'Olympic Skeet',
'Olympic Trap',
'Simulated Game',
'Sport Trap/Compact',
'Universal Trench',
'ZZ/Helice',
'Rifle',
'Centrefire Target Rifle',
'Gallery Rifle',
'Muzzle Loading',
'Practice Shotgun',
'Smallbore Rifle'
];
...
</script>
With only one controller, we can still use ng-repeat for each listing.
<div ng-repeat="d in data">
<h2 class="entry-title title-post">{{d.title}}</h2>
<div id="listing-image"><img src="{{d.acf.logo}}"></div>
<div id="listing-contact">Contact: {{d.acf.contact}}, {{d.acf.position}}</div>
<div id="listing-address-1">
{{d.acf.address_1}}, {{d.acf.address_2}} {{d.acf.address_3}} {{d.acf.town}} {{d.acf.county}} {{d.acf.postcode}}
</div>
<div id="listing-phone">Telephone: {{d.acf.telephone}}</div>
<div id="listing-mobile">Mobile: {{d.acf.mobile}}</div>
<div id="listing-email">Email: {{d.acf.email}}</div>
<div id="listing-website">Website: {{d.acf.website}}</div>
<div id="listing-established">Established: {{d.acf.established}}</div>
<div id="listing-about">About: {{d.acf.about}}</div>
<div id="listing-mailingaddress">Mailing Address: {{d.acf.mailing_address_}}, {{d.acf.mailing_address_2}}, {{d.acf.mailing_address_3}}, {{d.acf.mailing_town}}, {{d.acf.mailing_county}}, {{d.acf.mailing_postcode}}</div>
<div id="listing-directions">Directions: {{d.acf.directions}}</div>
<div id="scd-link">View on The Shooting Club Directory</div>
</div>
Finally... How do we only display listings that match our selected shooting type from the dropdown? We could use a custom Angular filter!
...
<div ng-repeat="d in data | filter:isSelectedListing">
...
<script type="text/javascript">
...
// Let's define a custom Angular filter because the WordPress JSON is complex
$scope.isSelectedListing = function(listing) {
// Show nothing if nothing is selected
if (angular.isUndefined($scope.selectedListing) || $scope.selectedListing == '') {
return false;
}
// Show all if 'All' is selected
if ($scope.selectedListing == 'All') {
return true;
}
// If the shooting type we're looking for is present, show the listing.
// To do this, we parse the WordPress JSON object model.
if (angular.isDefined(listing.terms.listing_shooting_type)) {
for (var i = 0; i < listing.terms.listing_shooting_type.length; i++) {
if (listing.terms.listing_shooting_type[i].name == $scope.selectedListing) {
return true;
}
}
}
return false;
};
...
</script>
Hopefully this gives you an idea of how we better leverage ng-repeat + DRY :)
The entire CodePen is here.

replace image src using ajax and jquery

In my app, i have a web page with lots of images whose source url is generated dynamically by making get request to the rails server, initially a default image is assigned to the source. After loading the page i make request to the server that return a json with new image URl, and then need to update the src of that image. Following is the code i am using in html.erb
<div class="inner">
<div class="span9 blog-head alert alert-info"><h3><%=#feeds.title%></h3></div>
<%#feeds.entries.each do|feed|%>
<div class="thumbnail feeds span6">
<div class="row title lead">
<span class="span6"><%=link_to feed.title,feed.url,target: "_blank"%></span>
</div>
<div class="row content">
<input type="hidden" class="image-feed-url" value="<%=feed.entry_id%>">
<!-- need to update src of following img tag -->
<img class="span2 desc-img thumbnail" src="/assets/default.jpg" alt="RSS">
<span class="span3"><%=feed.summary%></span>
</div>
<div class="row footer">
<%if feed.published%>
<span class="span3">Published on: <small><%=feed.published.to_date.strftime("%b, %-d, %Y")%></span></small>
<%end%>
<span class="span2 source">Source: <small><%=link_to 'Click here',#feeds.url, target: "_blank"%></span></small>
</div>
</div>
<%end%>
</div>
Need to update src in "img" tag having class "desc-img". In my JS file
$(document).ready(function(){
all_feeds = $('.inner .feeds')
for(i=0;i<all_feeds.length;i++)
{
element = all_feeds[i]
feed_url = $(element).find('.image-feed-url').val()
$.getJSON("/get_image_url?feed_url="+feed_url,function(data){
// data['link] is the actual image link returned by server
$(element).find('.desc-img').attr('src',data['link']);
});
}
});
I had also tried using div with background image instead of img tag and updating background image of div in JS but nothing works. I am new to Jquery and Ajax, any help will be appreciated.

try this :
$.getJSON("/get_image_url?feed_url="+feed_url,function(data){
$(element).find('.desc-img').removeAttr('src');
$(element).find('.desc-img').attr('src', '../' + data['link'] + '?' + Math.random());
});
Hope this helps.