Html not connecting to js - javascript

So I'm trying to make a slideshow using js, I have asked for help on that and it's working in JSFiddle, but it won't work in my local environment, so I'm wondering if I have some wording or something wrong somewhere that someone could help me see.
HTML5
<!DOCTYPE html>
<html>
<head>
<title>slider</title>
<link rel="stylesheet" href="style.css" type="text/css"/>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="viewport" content="with=device-width, initial-scale=1.0">
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
<script type="text/javascript" src="slider.js"></script>
</head>
<body onload="slider()">
<div class="slider">
<img id="1" src="slide_image1.jpg" alt="TV Deals"/>
<img id="2" src="slide_image2.jpg" alt="Furniture Deals"/>
<img id="3" src="slide_image3.jpg" alt="Electronic Deals"/>
</div>
</body>
</html>
CSS3
.slider {
width: 990px;
height: 270px;
overflow: hidden;
margin: 30px auto;
background-image: url('ajax-loader.gif');
background-repeat: no-repeat;
background-position: center;
}
.slider img{
border: 0;
display: none;
}
JavaScript
$(document).ready(function () {
slider();
});
function slider(){
var count = 1;
$('#1').show();
(function slide(){
$('.slider img').hide();
if (count > 3) {count = 1;} // makes this a loop
$('#'+count).fadeIn('slow');
count += 1;
setTimeout(function () {
slide();
}, 5000);
})();
}
Is my "onload" command correct? I'm using Web Expression as a designer and I actually went in through the url path for each and ever image and selected the image, so I know the paths are correct (did the same thing for the js). The JavaScript itself is called "slider.js" could this affect my code in anyway? This is my first attempt at doing one of these so I have no idea what's causing it to go wrong.

When you say local environment, is it running on your computer under the file:// protocol? (i.e., when you look at it is it something like file://C:\My\Files\index.html) or with a server running over the http:// protocol?
If it is the former, you need to change the script srcs from // to http:// explicitly. // means "use whatever protocol the page is using", so that would mean it tries file://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js, which obviously doesn't exist.
That's the only thing that jumps out at me as being off and is a common mistake when working locally.

Related

How to take input from user in html and use that variable as .bg background url in css file

I have been working on this code where I need to take input from the user via HTML buttons and then assign that input URL of an image from the web to the .bg {background: URL('URL') } in my CSS file.
Is there some way I can do that?
.bg {
background: URL(' *user input image URL * ')
}
This is the project I have been originally working on, so I wanted the URL input from the user and then display the blurry loading post that using the input from the user
https://github.com/bradtraversy/50projects50days/tree/master/blurry-loading
So as you see here I am updating the background after 3 seconds. This will not change the css file but will change the css in real time. All you need to do is update what is stored in the background style portion of the element. You just need the link to the image. If you want to update permanently in the css there are 2 ways to go about it, keeping the css the same and changing the reference file or writing to the css file with a different script and reloading.
setTimeout(function () {
document.getElementById("bg").style.background ="URL('https://i.picsum.photos/id/866/200/300.jpg?hmac=rcadCENKh4rD6MAp6V_ma-AyWv641M4iiOpe1RyFHeI')";
}, 3000);
#bg {
color: blue;
background: URL('https://i.picsum.photos/id/237/200/300.jpg?hmac=TmmQSbShHz9CdQm0NkEjx1Dyh_Y984R9LpNrpvH2D_U');
height: 400px;
}
<div id="bg"></div>
I think you can do like this
function setImage() {
const input_from_user = document.getElementById("input_from_user");
const image_url = input_from_user.value;
const bg_container = document.getElementsByClassName("bg")[0];
bg_container.style.backgroundImage = `url(${image_url})`;
}
.bg {
width: 400px;
height: 200px;
background-repeat: no-repeat;
background-size: contain;
background-position: center center;
}
<!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" />
<title>Document</title>
</head>
<body>
<div class="bg"></div>
<input type="url" id="input_from_user" />
<button onclick="setImage()">Set Image</button>
</body>
</html>
Can try with this image: https://www.google.nl/images/srpr/logo3w.png
Hope this can help.

I was not able to see images while converting html page to pdf using javascript

here is my code while i download pdf images attributes of html are missing.
suppose in cases like generating invoices we should print tables containing details along with logo.
but images are not displaying in downloaded pdf using this code.Provide me with possible resolution and reason for this.thanks in advance
$(document).on('click', '#btn', function() {
let pdf = new jsPDF();
let section = $('body');
let page = function() {
pdf.save('pagename.pdf');
};
pdf.addHTML(section, page);
})
html,
body {
overflow-x: hidden;
}
#btn {
padding: 10px;
border: 0px;
margin: 50px;
cursor: pointer;
}
<!DOCTYPE html>
<html>
<head>
<title>HTML with Image</title>
<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
<style type="text/css">
</style>
</head>
<body>
<button id="btn">Convert to PDF</button>
<div id="text">
<h2>HTML Page with Image to PDF</h2>
<img src="http://photojournal.jpl.nasa.gov/jpeg/PIA17555.jpg" width="300px">
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/0.4.1/html2canvas.js">
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.0.272/jspdf.debug.js"></script>
<script src="custom.js"></script>
<script type="text/javascript">
</script>
</body>
</html>
all the html elements are working fine except images . kindly help me with resolving this.
jsPdf does not support adding images the way you are trying to add them, because addtHtml function uses the html2canvas module, to convert your Html to canvas, so jsPdf can render it into pdf. Please check this link below.
https://weihui-guo.medium.com/save-html-page-and-online-images-as-a-pdf-attachment-with-one-click-from-client-side-21d65656e764

Click Element isn't showing/hiding properly

I have an issue with my code, I'm trying to create a function to hide and show a div
and it's working, but it dosnt work at first, It works only on the second click, so i have to click the link first to get it to start working properly, how can i fix it so that it works on first click?
more info:
im trying to have a div appear and then disapear usin the display and hide functions, the catch is i also want it to disapper when im outside of the div, if its visible, its all working but the problem is when i first load the page thn click the link to display the div, it dosnt appear, only when i click it a second time does it appear. this is the problem i want to fix
this is my code:
<!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">
<title></title>
<!-- Bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css">
<!-- 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/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="js/jquery.foggy.min.js"></script>
<style>
body {
background: black;
background-repeat: no-repeat;
background-attachment: fixed;
background-position: center;
background-size: 100%;
color: white;
font-family: 'Segoe UI';
font-size: 24px;
}
.box
{
width: 100%;
margin: auto;
top: 0px;
left: 20%;
right: 0px;
bottom: 0px;
background-color: white;
opacity: 0.4;
position: fixed;
overflow-y: scroll;
overflow-x: scroll;
}
</style>
</head>
<body>
<script lang="en" type="text/javascript">
$(document).ready(function () {
});
$(document).mouseup(function (e) {
var container = $("#boxwrapper");
if (!container.is(e.target) && container.has(e.target).length === 0) {
if (container.is(':visible'))
Hide();
}
});
function Display() {
$("#boxwrapper").show();
$("#boxwrapper").addClass("box");
$("#main").foggy();
}
function Hide() {
$("#boxwrapper").hide();
$("#main").foggy(false);
}
</script>
<div id="main">
Display Div
</div>
<div id="boxwrapper">
</div>
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
</body>
</html>
Why don't you use click() method insead of mouseup()?
$('a').click(function (e) {
var container = $("#boxwrapper");
if (container.is(':visible')) {
Hide();
} else {
Display();
}
return false;
});
If you don't want to bind this event to every <a> on your site, add class to your element and bind click to this class. E.g.:
Display Div
and then in your script:
$('a.divToggle').click(function (e) { });
See this working fiddle
JavaScript
function display() {
if ($('#boxwrapper ').css('display') === 'none') {
$('#boxwrapper').show();
} else {
$('#boxwrapper').hide();
}
}
The issue could be a whitespace or anything, since is very hard to reproduce it, but here some advices or things that could be causing the issue:
Organize your code
First of all, you need to organize your code and load the JS libraries at the end of the file or wrap your functions inside the $(document).ready.
If you are using jQuery already, why to use the onClick event on the element itself if you can do it with jQuery.
Instead of all code inside the document mouseUp event, you could just add display: none in the css to #boxwrapper.
Instead of Hide() and Show() functions, you could just use toogleClass('box') jquery function
Difference between Click and MouseUp events
With a mouseup event, you can click somewhere else on the screen, hold down the click button, and move the pointer to your mouseup element, and then release the mouse pointer. A click event requires the mousedown and mouseup event to happen on that element.
Prevent Default Maybe?
You are not preventing Default on your click event. You can do it like:
Display Div

Trying to accomplish a 'slideshow' effect loading multiple pages

I'm fielding a request that someone essentially wants one master page with their logo at the top, and the remainder of the page will load a series of pages (populated by a static array) and then repeat itself.
My intent is to have a page load in the 'content' div element, wait a period of time (I only listed 2 seconds for testing purposes), and then the next page loads. When it reaches the end of the array, I want the array to reset so that this is continuously loading.
I'm sure there are probably better ways to do this, but through my research this seemed the simplest.
Any help, or pointing me in another direction is all greatly appreciated.
Editing for clarity:
What I'm looking for is one master page, which just simply has a header at the top of the page. The rest of the page would be composed of a single div element (or iFrame if need be) and the content of said element would change after a determined amount of time, automatically, with no input. The element would initially load 'testdata.php' which would be composed of multiple database calls, after a determined amount of time, that div element would reload 'testdata1.php', which is composed of completely different database calls.
I hope this helps better describe what I am hoping to achieve.
What I have so far:
<!doctype html>
<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en-US" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<script type="text/javascript" src="scripts_css/jquery.js"></script>
</head>
<body>
<div style="background-color: #E0E0E0; height: 150px; width: 100%; margins: 0 auto;">
<img src="images/logo.png"/>
</div>
<div id="content" style="height: 850px;"></div>
</body>
<script>
var linkArray=[ "testdata.php",
"testdata1.php"];
for (var i=0; i < linkArray.length; i++) {
setTimeout(function(){$("#content").load(linkArray[i])},2000);
if (i === (linkArray.length-1))
i = 0;
}
</script>
I know this isn't very helpful, and it doesn't directly address your problem, but you might want to try using jQuery (http://jquery.com/). You could have something like this:
$(document).ready(function() {
// Set timeout to 2 seconds
var array = ['page1', 'page2'];
document.write(array[1].href);
});
Or, you could use some server-side script like ruby, or PHP.
This ended up doing the trick for me:
<!doctype html>
<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en-US" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<script type="text/javascript" src="scripts_css/jquery.js"></script>
</head>
<body>
<div style="background-color: #E0E0E0; height: 150px; width: 100%; margins: 0 auto;">
<img src="images/logo.png"/>
</div>
<div id="content" style="height: 850px;"></div>
</body>
<script>
var linkArray=[ "testdata.php",
"testdata1.php"];
var timeout = 0;
var counter = 0;
var arrayCount = linkArray.length;
changeContent(timeout, counter, arrayCount);
function changeContent(def_timeout, def_counter, def_arrayCount) {
//setTimeout(function() {$("#content").load(linkArray[def_counter])}, def_timeout);
$("#content").load(linkArray[def_counter]);
def_counter++;
if (def_counter >= def_arrayCount)
def_counter = 0;
def_timeout = def_timeout + 5000;
setTimeout(function() {changeContent(def_timeout, def_counter, def_arrayCount)}, 5000);
}
</script>

How to read QR code using iPad camera on website?

I am using the following code to access the camera but aim is to read QR codes using camera.
Using the following code I can only take the picture and save it then using my backend read the QR code from the saved file.
How can I modify the code to process the picture while the camera is reading.
Or something like sending the streams to the back-end and once the QR code is detected it notifies the user.
I need to work with a tablet.
I can use the following to record videos as well but how to send the streams to back-end
<input type="file" capture="camera" accept="video/*">
My code to take pictures
<!DOCTYPE HTML>
<html>
<head>
<meta name="viewport" content="width=320; user-scalable=no" />
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>ColorThief Demo</title>
<script type="text/javascript" charset="utf-8" src="jquery-2.0.0.min.js"></script>
<script type="text/javascript" charset="utf-8" src="quantize.js"></script>
<script type="text/javascript" charset="utf-8" src="color-thief.js"></script>
<style>
#yourimage {
width:100%;
}
#swatches {
width: 100%;
height: 50px;
}
.swatch {
width:18%;
height: 50px;
border-style:solid;
border-width:thin;
float: left;
margin-right: 3px;
}
</style>
</head>
<body>
<input type="file" capture="camera" accept="image/*" id="takePictureField">
<img id="yourimage">
<div id="swatches">
<div id="swatch0" class="swatch"></div>
<div id="swatch1" class="swatch"></div>
<div id="swatch2" class="swatch"></div>
<div id="swatch3" class="swatch"></div>
<div id="swatch4" class="swatch"></div>
</div>
<script>
var desiredWidth;
$(document).ready(function() {
console.log('onReady');
$("#takePictureField").on("change",gotPic);
$("#yourimage").load(getSwatches);
desiredWidth = window.innerWidth;
if(!("url" in window) && ("webkitURL" in window)) {
window.URL = window.webkitURL;
}
});
function getSwatches(){
var colorArr = createPalette($("#yourimage"), 5);
for (var i = 0; i < Math.min(5, colorArr.length); i++) {
$("#swatch"+i).css("background-color","rgb("+colorArr[i][0]+","+colorArr[i][1]+","+colorArr[i][2]+")");
console.log($("#swatch"+i).css("background-color"));
}
}
//Credit: https://www.youtube.com/watch?v=EPYnGFEcis4&feature=youtube_gdata_player
function gotPic(event) {
if(event.target.files.length == 1 &&
event.target.files[0].type.indexOf("image/") == 0) {
$("#yourimage").attr("src",URL.createObjectURL(event.target.files[0]));
}
}
</script>
</body>
</html>
Capturing the video and sending it to the server will be prohibitively bandwidth-intensive on a mobile device. I would give jsqrcode a try and do it all client-side in JavaScript. Also, see this answer.
You need to have a look at the Stream API. There are some demos at the bottom of Eric Bidelman's blog post.

Categories

Resources