AngularJS Message Display On Click - javascript

I have two questions
How to display the initial message and/or upon button click. The current code I have displays the message continuously. I want it to display initially and once users starts pressing other button I want the message "Start guessing" to disappear and only appear after user clicks Start Over button.
How to display the correct answer when user clicks on Give up.
HTML
<!DOCTYPE html>
<html lang="en" data-ng-app="myApp">
<head>
<title>Template that uses Bootstrap</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initialscale=1.0"/>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet" />
<!-- Custom CSS -->
<link href="css/custom.css" rel="stylesheet" />
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="js/html5shiv.js"></script>
<script src="js/respond.min.js"></script>
<![endif]-->
</head>
<body>
<div data-ng-controller="myCtrl">
<div class="container">
<h1>Guessing Game</h1><br>
<label>Enter Guess:</label>
<input type="text" id="guess" name="guess" data-ng-model="guess"/><br>
<span data-ng-bind="Message"></span>
<div class="row">
<div class="col-md-12">
<button class="btn btn-primary btn-md" data-ng-click="checkGuess()">Check</button>
<button class="btn btn-warning btn-md" data-ng-click="showAnswer()">Give Up</button>
<button class="btn btn-info btn-md" data-ng-click="startGame()">Start Over</button>
</div></div>
<div class="row">
<div class="col-xs-7">
<div ng-show="deviation<0" class="alert alert-warning">Guess higher</div>
<div ng-show="deviation>0" class="alert alert-warning">Guess lower</div>
<div ng-show="deviation===0" class="alert alert-success">You got it!</div>
</div></div>
</div>
</div>
<!-- jQuery – required for Bootstrap's JavaScript plugins) -->
<script src="js/jquery.min.js"></script>
<!-- All Bootstrap plug-ins file -->
<script src="js/bootstrap.min.js"></script>
<!-- Basic AngularJS -->
<script src="js/angular.min.js"></script>
<!-- Your Controller -->
<script src="js/app.js"></script>
</body>
</html>
Angular
/*global angular */
var myApp = angular.module("myApp", []);
myApp.controller("myCtrl", function ($scope) {
"use strict";
$scope.checkGuess = function () {
$scope.deviation = $scope.original - $scope.guess;
};
$scope.startGame = function () {
$scope.guess = null;
$scope.original = Math.floor(Math.random() * 1000 + 1);
$scope.deviation = null;
$scope.display = false;
$scope.Message = "Start guessing.";
};
$scope.showAnswer = function () {
$scope.original = Math.floor(Math.random() * 1000 + 1);
$scope.display = true;
};
$scope.startGame();
}
);

1) Use ng-hide to hide your element when needed:
<span data-ng-bind="Message" ng-hide="hideMessage"></span>
In the checkGuess and showAnswer functions set the hideMessage to true:
$scope.hideMessage = true;
In the startGame function, set it to false:
$scope.hideMessage = false;
2) In your HTML add a tag:
<div ng-show="showOriginal">{{previousOriginal}}</div>
And in your showAnser and startGame function, add:
$scope.showOriginal = true;
$scope.previousOriginal = angular.copy($scope.original);
And remove of the showAnswer function:
$scope.original = Math.floor(Math.random() * 1000 + 1)
Finally, in the startGame function, set it to false:
$scope.showOriginal = false;

Related

How to trigger click event with enter button?

I am building a very basic magic 8 ball type 'game' using vanilla javascript. I have a text field (for a user question) and a submit button underneath. At present, I have it working fine with a event listener for the submit button but am trying to also get the same result if a user was to click enter.
I saw on w3s that you can trigger a button click upon enter, as below...
// Get the input field
var input = document.getElementById("myInput");
// Execute a function when the user presses a key on the keyboard
input.addEventListener("keypress", function(event) {
// If the user presses the "Enter" key on the keyboard
if (event.key === "Enter") {
// Cancel the default action, if needed
event.preventDefault();
// Trigger the button element with a click
document.getElementById("myBtn").click();
}
});
...but I can't seem to translate that into my own project. HTML and JS for my project below; I am trying not to use nested functions at the moment just to help with my understanding (as advised by my course mentor).
JavaScript
let question = document.querySelector('#userQuestion');
let button = document.querySelector('#shakeButton');
let answer = document.querySelector('#answer');
let options = [
'It is certain.',
'Signs point to yes.',
'Concentrate and ask again.',
'My sources say no.',
]
// Generate a random number
function generateAnswer() {
let index = Math.floor(Math.random() * 4);
let message = options[index];
answer.textContent = message;
answer.style.fontSize = '18px';
setTimeout(timeOut, 3000);
};
// Timeout function
function timeOut() {
answer.textContent = '8';
answer.style.fontSize = '120px';
};
// Enter button trigers click event
function enterButton (event) {
if (event.key === "Enter") {
event.preventDefault();
button.click();
}
};
//Event listener for button click
button.addEventListener('click', generateAnswer);
question.addEventListener("keypress", enterButton);
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Magic 8 Ball, ask it anything and it will answer.">
<!-- Stylesheet & Font Awesome Links -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.2.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-rbsA2VBKQhggwzxH7pPCaAqO46MgnOM80zW1RWuH61DGLwZJEdK2Kadq2F9CUG65" crossorigin="anonymous">
<link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=Orbitron:wght#800&family=Press+Start+2P&display=swap" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.1.2/css/all.min.css">
<link rel="stylesheet" href="assets/css/style.css" type="text/css">
<!-- Stylesheet & Font Awesome Links End -->
<title>Magic 8 Ball</title>
</head>
<body>
<nav class="navbar">
<div class="container-fluid">
<a class="navbar-brand ms-auto" href="#">dc games</a>
</div>
</nav>
<!-- Header -->
<header class="heading">
<h1>The Magic 8 Ball</h1>
<p>Shake the Magic 8 Ball and it will answer your question.</p>
</header>
<!-- Header End-->
<!-- Magic 8 Ball -->
<div class="ball-black">
<div class="ball-white">
<p id="answer">8</p>
</div>
</div>
<!-- Magic 8 Ball End -->
<!-- User Question -->
<div class="user-input">
<input type="text" class="form-control mb-2 mr-sm-2" id="inlineFormInputName2 userQuestion" placeholder="What is your question?" required>
<button type="button" class="btn" id="shakeButton">Shake!</button>
</div>
<!-- User Question -->
<!-- Footer -->
<footer>
<div class="copyright fixed-bottom">
<p>Copyright © dc games 2022</p>
</div>
</footer>
<!-- Footer End -->
<!-- JavaScript Links -->
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script type="text/javascript" src="assets/js/script.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.2.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-kenU1KFdBIe4zVF0s0G1M5b4hcpxyD9F7jL+jjXkk+Q2h455rYXK/7HAuoJl+0I4" crossorigin="anonymous"></script>
<!-- JavaScript Links End -->
</body>
</html>
You cannot have multiple Ids on a single DOMElement. If you remove inlineFormInputName2 from the id of the user question, your code will work.
You can only have multiple identifiers for a class.
classes are used for formatting with css and Ids to specifically identify an element.

I have a jquery issue. I have two divs showing and hiding. Both are set to refresh but one is overriding it

I have a jquery issue I have two divs showing and hiding and both are set to refresh but one is over riding the other. I am not sure why the load1 were div1 is at keeps overriding the load2 div2. so when i click on button completed the received div is automatically refreshing and changing the page back to received. I will try to get this on fiddle.
<!DOCTYPE html>
<html>
<head>
<title></title>
<link href="http://localhost/test/assets/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<link href="http://localhost/test/assets/css/custom.css" rel="stylesheet">
<link href="http://localhost/test/assets/css/custom_edit.css" rel="stylesheet">
<link href="http://localhost/test/assets/datatables/css/dataTables.bootstrap.css" rel="stylesheet">
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<pre><button class="btn btn-sm btn-primary" id="received">Received</button><button class="btn btn-sm btn-success" id="completed">Completed</button></pre>
<div id="load1">
<div id="div1">
<h3>Received Section</h3>
//code goes here......
</div>
</div>
<div id="load2">
<input type="hidden" id="show_completed" value="1" name="show_completed">
<div id="div2">
<h3>Completed Section</h3>
//code goes here......
</div>
</div>
<footer>
<script src="http://localhost/test/assets/jquery/jquery-3.1.0.min.js"></script>
<script src="http://localhost/test/assets/bootstrap/js/bootstrap.min.js"></script>
<script src="http://localhost/test/assets/datatables/js/jquery.dataTables.min.js"></script>
<script src="http://localhost/test/assets/datatables/js/dataTables.bootstrap.js"></script>
<script type="text/javascript">
var $show_completed = document.getElementById('show_completed');
if($show_completed.value == '0')
{
setInterval(function() {
$("#load1").load(location.href+" #load1>*","");
}, 10000); // seconds to wait, miliseconds
}
else($show_completed.value == '1')
{
setInterval(function() {
$("#load2").load(location.href+" #load2>*","");
}, 100000); // seconds to wait, miliseconds
}
</script>
<script type="text/javascript">
$(document).ready( function () {
$('#div2').fadeOut();
} );
$("#received").on('click', function() {
document.getElementById("show_completed").value='0';
$("#div1").fadeIn();
$("#div2").fadeOut();
});
$("#completed").on('click', function() {
document.getElementById("show_completed").value='1';
$("#div2").fadeIn();
$("#div1").fadeOut();
});
</script>
</footer>
</body>
</html>
Try this... Hope it helps
<!DOCTYPE html>
<html>
<head>
<title></title>
<link href="http://localhost/test/assets/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<link href="http://localhost/test/assets/css/custom.css" rel="stylesheet">
<link href="http://localhost/test/assets/css/custom_edit.css" rel="stylesheet">
<link href="http://localhost/test/assets/datatables/css/dataTables.bootstrap.css" rel="stylesheet">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="http://localhost/test/assets/bootstrap/js/bootstrap.min.js"></script>
<script src="http://localhost/test/assets/datatables/js/jquery.dataTables.min.js"></script>
<script src="http://localhost/test/assets/datatables/js/dataTables.bootstrap.js"></script>
</head>
<body>
<pre>
<button class="btn btn-sm btn-primary" id="received">Received</button>
<button class="btn btn-sm btn-success" id="completed">Completed</button>
</pre>
<div id="load1">
<div id="div1">
<h3>Received Section</h3>
//code goes here......
</div>
</div>
<div id="load2">
<input type="hidden" id="show_completed" value="1" name="show_completed">
<div id="div2">
<h3>Completed Section</h3>
//code goes here......
</div>
</div>
<script type="text/javascript">
var $show_completed = document.getElementById('show_completed');
if($show_completed.value == '0'){
setInterval(function() {
$("#load1").load(location.href+" #load1>*","");
}, 10000); // seconds to wait, miliseconds
} else($show_completed.value == '1'){
setInterval(function() {
$("#load2").load(location.href+" #load2>*","");
}, 100000); // seconds to wait, miliseconds
}
</script>
<script type="text/javascript">
$(document).ready( function () {
$('#div2').fadeOut();
});
$("#received").on('click', function() {
document.getElementById("show_completed").value='0';
$("#div1").fadeIn();
$("#div2").fadeOut();
});
$("#completed").on('click', function() {
document.getElementById("show_completed").value='1';
$("#div2").fadeIn();
$("#div1").fadeOut();
});
</script>
</body>
</html>

Bootstrap switch inside datatables plugin with ajax call catch event

I'm using datatables plugin and I have a problem with bootstrap switch.
This is my javascript code, where I create a switch with the value retrieved from ajax call:
$(document).ready(function() {
if ( ! $.fn.DataTable.isDataTable( '#usersTable' ) ) {
userTable = $('#usersTable').DataTable({
responsive: true,
//fix problem with responsive table
"autoWidth": false,
"ajax": "table",
"columns": [
{ "data": "username" },
{ data: "enabled", render: function ( data, type, row ) {
if (data) {
return '<input data="username" type="checkbox" name="my-checkbox" checked>';
}
else {
return '<input data="username" type="checkbox" name="my-checkbox">';
}
}
},
{ "data": "role.role"},
{ "data": "clientVersion.name" },
{
data: null,
className: "center",
defaultContent: '<button type="button" class="btn btn-danger" id="deleteLicense" data-toggle="modal" th:attr="data-href=${license.idClientLicense}" data-target="#deleteLicenseModal">Delete</button>'
}
],
"fnDrawCallback": function() {
//Initialize checkbos for enable/disable user
$("[name='my-checkbox']").bootstrapSwitch({size: "small", onColor:"success", offColor:"danger"});
}
});
}
else {
userTable.ajax.url("table").load();
}
$('input[name="my-checkbox"]').on('switchChange.bootstrapSwitch', function(event, state) {
//CSRF attribute for spring security
var token = $("meta[name='_csrf']").attr("content");
var header = $("meta[name='_csrf_header']").attr("content");
$.ajax({
type : "POST",
url : "status"+(this).attr("data"),
data : form.serialize(),
beforeSend:function(xhr) {
xhr.setRequestHeader(header, token);
},
// all right with rest call
success : function(data) {
// No exception occurred
if (data.status==true){
// Also the field are right(for e.g. form value)
if(data.success==true){
// il risultato sta in data.result
// window.location.reload(true);
//reset select 2 choise because it can set with old user who no longer exist
// reload only the tag with id carsTable, so only the table
}
else{
// code if there are some error into form for example
}
} else {
// code exception
notifyMessage(data.result, 'error');
}
},
// error during rest call
error : function(data) {
window.location.href = "/ATS/500";
}
});
});
});
and this is HTML code:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4"
xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Administration users</title>
<!-- Tell the browser to be responsive to screen width -->
<meta
content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"
name="viewport">
<!-- Spring csrf -->
<meta name="_csrf" th:content="${_csrf.token}" />
<!-- default header name is X-CSRF-TOKEN -->
<meta name="_csrf_header" th:content="${_csrf.headerName}" />
<!-- Bootstrap Core CSS -->
<link th:href="#{/static/assets/bootstrap/css/bootstrap.css}"
rel="stylesheet">
<!-- Font Awesome -->
<link rel="stylesheet"
th:href="#{/static/assets/component/font-awesome-4.4.0/css/font-awesome.min.css}">
<!-- Ionicons -->
<link rel="stylesheet"
href="https://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css">
<!-- DataTables -->
<link rel="stylesheet"
th:href="#{/static/assets/plugins/datatables/dataTables.bootstrap.css}">
<link rel="stylesheet"
th:href="#{/static/assets/plugins/datatables/extensions/Responsive/css/responsive.bootstrap.min.css}">
<!-- Theme style -->
<link rel="stylesheet"
th:href="#{/static/assets/dist/css/AdminLTE.min.css}">
<!-- AdminLTE Skins. Choose a skin from the css/skins
folder instead of downloading all of them to reduce the load. -->
<link rel="stylesheet"
th:href="#{/static/assets/dist/css/skins/_all-skins.min.css}">
<!-- Select2 -->
<link rel="stylesheet"
th:href="#{/static/assets/plugins/select2/select2.min.css}">
<!-- Bootstrap switch -->
<link rel="stylesheet"
th:href="#{/static/assets/plugins/bootstrap-switch/css/bootstrap-switch.min.css}">
<!-- jQuery 2.1.4 -->
<script th:src="#{/static/assets/plugins/jQuery/jQuery-2.1.4.min.js}"
type="text/javascript"></script>
<!-- Bootstrap 3.3.5 -->
<script th:src="#{/static/assets/bootstrap/js/bootstrap.min.js}"
type="text/javascript"></script>
<!-- DataTables -->
<script type="text/javascript"
th:src="#{/static/assets/plugins/datatables/jquery.dataTables.min.js}"></script>
<script type="text/javascript"
th:src="#{/static/assets/plugins/datatables/dataTables.bootstrap.min.js}"></script>
<script type="text/javascript"
th:src="#{/static/assets/plugins/datatables/extensions/Responsive/js/dataTables.responsive.min.js}"></script>
<script type="text/javascript"
th:src="#{/static/assets/plugins/datatables/extensions/Responsive/js/responsive.bootstrap.min.js}"></script>
<!-- page script -->
<!-- Slimscroll -->
<script type="text/javascript"
th:src="#{/static/assets/plugins/slimScroll/jquery.slimscroll.min.js}"></script>
<!-- FastClick -->
<script type="text/javascript"
th:src="#{/static/assets/plugins/fastclick/fastclick.min.js}"></script>
<!-- Bootstrap-growl -->
<script type="text/javascript"
th:src="#{/static/assets/plugins/notify/jquery.bootstrap-growl.js}"></script>
<!-- AdminLTE App -->
<script type="text/javascript"
th:src="#{/static/assets/dist/js/app.min.js}"></script>
<!-- AdminLTE for demo purposes -->
<script type="text/javascript"
th:src="#{/static/assets/dist/js/demo.js}"></script>
<!-- Select2 -->
<script type="text/javascript"
th:src="#{/static/assets/plugins/select2/select2.full.min.js}"></script>
<!-- Bootstrap switch -->
<script type="text/javascript"
th:src="#{/static/assets/plugins/bootstrap-switch/js/bootstrap-switch.min.js}"></script>
<script type="text/javascript" th:src="#{/static/assets/js/user.js}"></script>
</head>
<body class="hold-transition skin-blue sidebar-mini">
<div class="wrapper">
<!-- Header nd menu fragment -->
<div th:replace="../fragments/dashboard-header :: dashboard-header"></div>
<!-- Content Wrapper. Contains page content -->
<div class="content-wrapper">
<!-- Content Header (Page header) -->
<section class="content-header">
<h1>Administration</h1>
<ol class="breadcrumb">
<li><a th:href="#{/}"><i class="fa fa-dashboard"></i> Home
</a></li>
<li class="active">User</li>
</ol>
</section>
<!-- Main content -->
<section class="content">
<div class="row">
<div class="col-xs-12">
<div class="box">
<div class="box-header">
<h3 class="box-title">Users</h3>
</div>
<!-- /.box-header -->
<div class="box-body">
<!-- -Users table -->
<table id="usersTable"
class="table table-bordered table-striped">
<thead>
<tr>
<th>Username</th>
<th>Enable</th>
<th>Role</th>
<th>Version</th>
<th>Delete</th>
</tr>
</thead>
</table>
<!-- Create two equals button because when I am on desktop I show the text add fleet otherwise the + and the tooltip.
This is need because otherwise the text goes out the button -->
<button id="addUserButton" type="button"
class="btn btn-primary visible-lg col-lg-1 col-lg-offset-11"
data-toggle="modal" data-target="#addUserModal">Add
user</button>
<button id="addlicenseButton" type="button"
class="btn btn-primary hidden-lg col-xs-1 col-xs-offset-11"
data-toggle="modal" data-target="#addUserModal">
<span class="glyphicon glyphicon-plus" data-toggle="tooltip"
title="Add user"></span>
</button>
</div>
</div>
</div>
<!-- /.col -->
</div>
<!-- /.row -->
</section>
<!-- /.content -->
</div>
</div>
</body>
</html>
I read several questions and answer but I think that my problem is linked to "fnDrawCallback": function() because I tried all the solutions and None worked. Might be that the switch isn't correctly setted?
This is the table
CAUSE
Pages other than first do not exist in DOM at the time of initialization, that is why your handler never gets called.
SOLUTION
You need to use event delegation by providing selector as a second argument in on() call, see example below:
$('#usersTable').on('switchChange.bootstrapSwitch', 'input[name="my-checkbox"]', function(event, state) {
// ... skipped ...
});
From jQuery on() method documentation:
Delegated events have the advantage that they can process events from
descendant elements that are added to the document at a later time.
See "Direct and delegated events" in jQuery on() method documentation and jQuery DataTables – Why click event handler does not work for more information.
NOTES
Custom controls and Responsive extension require special handling. If column containing custom control becomes hidden or visible, it should be re-initialized. See jQuery DataTables – Responsive extension and custom controls for more information.

Angularjs fails to dynamic change image src

Hello i'm building an application where i want to dynamically change the source of an image in order to force reload it . The problem is that in order of this i only get a broken image on the browser. Instead , if a run the function manually by a button it runs perfect .
HTML document
<!DOCTYPE html>
<html lang="en" ng-app='cameraApp'>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Node JS Camera</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.3/angular.min.js"></script>
<script src='https://code.angularjs.org/1.4.4/angular-sanitize.min.js'></script>
<script src="cameraApp.js"></script>
</head>
<body>
<div class="container-fluid">
<div class="jumbotron">
<h1>Welcome to NodeJS Camera v1</h1>
</div>
<div ng-controller="HomeController">
<div class="cameraControl col-md-5">
<p>Here is the camera control</p>
<button class="btn btn-default" ng-click="getSnapshot()">Snapshot</button>
<button class="btn btn-info" ng-click="intervalFunction()">Start Feed</button>
</div>
<div class="lifeFeed col-md-7">
<p>Here is the live feed</p>
<p><button class="btn btn-default" ng-click="readSnapshot()">Snapshot Read</button></p>
<img width='600' height='600' ng-src="{{snapshot}}" alt="SnapShot taken">
</div>
</div>
</div>
</body>
</html>
cameraApp.js
var cameraApp = angular.module('cameraApp',[]);
cameraApp.controller('HomeController', function($scope,$http,$timeout) {
function updateImage() {
var img = 'snapshots/camera.jpg'+ '?decache=' + Math.random();
console.log('Snapshot Loaded');
$scope.snapshot = img;
};
$scope.readSnapshot = updateImage;
$scope.getSnapshot = function() {
$http.get('/api/getSnapshot')
.then(function(response) {
// this callback will be called asynchronously
// when the response is available
console.log('Snapshot captured');
$scope.readSnapshot();
}, function(response) {
console.log('Error in capturing...');
});
}
$scope.intervalFunction = function() {
$timeout(function() {
$scope.getSnapshot();
$scope.intervalFunction();
}, 2000);
};
// Kick off the interval
$scope.intervalFunction();
});
There are two solutions I've used for this in the past.
1) Use an ng-if/ng-show on your img tag. This will prevent the broken image from displaying.
<img ng-if='snapshot'>
2) Set a default image that will load and then be replaced once the other images load.
$scope.snapshot = 'snapshots/default.png';

Save dynamically created buttons

Below is my code. In this by clicking on Add Group, a button is dynamically created and added in fooBar. But when I refresh the page it goes away. I want to create the buttons and save it in the fooBar.
<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
<head>
<title>Content</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Bootstrap -->
<link href="stylesheets/bootstrap.min.css" rel="stylesheet">
<link href="stylesheets/bootstrap.css" rel="stylesheet">
<link href="stylesheets/bootstrap-theme.min.css" rel="stylesheet">
<link href="stylesheets/bootstrap-theme.css" rel="stylesheet">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.3.0/respond.min.js"></script>
<![endif]-->
<SCRIPT language="javascript">
window.onload = function() {
document.getElementById('btnAdd').onclick = function()
{
myFunction();
};
var person;
var element;
function myFunction()
{
var x;
person = prompt("Please enter Group Name");
if (person != null)
{
add(element);
// x = "Hello " + person + "! How are you today?";
// document.getElementById("demo").innerHTML = x;
}
}
function add(type) {
//Create an input type dynamically.
element = document.createElement("button");
var t = document.createTextNode(person);
element.appendChild(t);
//Assign different attributes to the element.
// element.type = type;
// element.value = type; // Really? You want the default value to be the type string?
// element.name = type; // And the name too?
element.className = "btn btn-default";
span.innerHTML=person;
element.onclick = function() { // Note this is a function
//alert("Do it again!");
$("#btn-group").load("head.html");
};
var foo = document.getElementById("fooBar");
//Append the element in page (in span).
foo.appendChild(element);
// var d = document.getElementById('fooBar');
// d.appendChild(i);
}
};
// function copy()
// {
// var n1 = document.getElementById('addKeyword');
// var n2 = document.getElementById('getKeyword');
// n2.innerText = n1.value;
// }
</SCRIPT>
<script>
$(function(){
$("#btn-group").load("head.html");
});
</script>
</head>
<body>
<div class="btn-group" id="fooBar">
<!-- <button type="button" class="btn btn-default">Marketing</button>
<button type="button" class="btn btn-default">Internet</button>
<button type="button" class="btn btn-default">Politics</button>-->
<button type="button" class="btn btn-default" id="btnAdd">Add Group</button>
</div>
<div class="boxed">
<h4>Group:<span class="label label-default" id="span"></span>
<button type="submit" class="btn btn-default">Edit Name</button>
<button type="submit" class="btn btn-default">Disable</button>
<button type="submit" class="btn btn-default">Delete Group</button></h4>
<div class="row">
<div class="col-lg-6">
<div class="input-group">
<input type="text" class="form-control" placeholder="Enter your keyword" id="addKeyword">
<span class="input-group-btn">
<button class="btn btn-default" type="button" >Add</button>
</span>
</div><!-- /input-group -->
</div><!-- /.col-lg-6 -->
</div>
<h4>Keywords:</h4>
<!-- <div class="keyword" id="getKeyword"></div>-->
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://code.jquery.com/jquery.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="stylesheets/bootstrap.min.js"></script>
<script src="stylesheets/bootstrap.js"></script>
</body>
</html>
Basically, you have two options:
1) Save the information server side: After creating a button, make an AJAX Call to the server, save the configuration there somehow and alter the delivered html accordingly the next time this document is requested
2) Save the button configuration client side: E.g. very simple via localStorage and integrate a check into your page to check the LS for potentially created buttons.

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