Recently I've got into a problem. I want to add this code at my blogger templete. I've gave it replace 'display:none; css' option, replace the credit URL with my homepage features. But the if (footer === null) {window.location = 'http://google.com';} isn't working. why? Is anything wrong? I want to make client blog redirect if they remove the id='mycreditlink' attribute. I want to do this without jquery.
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function creditprotection(){
var url = ('http://grplusbd.net');
var style = ('display: inline; visibility: true;');
var footer = document.getElementById('mycreditlink');
footer.href= url;
footer.style = style;
if (footer === null) {
window.location = 'http://google.com';
}
}
window.onload = function(){creditprotection();};
</script>
</head>
<body>
Powered By <a href='http://google.com' id='mycreditlink'> My Site </a>
</body>
</html>
<head>
<script type="text/javascript">
function creditprotection(){
var url = ('http://grplusbd.net');
var style = ('display: inline; visibility: true;');
var footer = document.getElementById('mycreditlink');
if (footer == null) {
footer.href= url;
footer.style = style;
window.location = 'http://google.com';
}
}window.onload = function(){creditprotection();};
</script>
</head>
<body>
Powered By <a href='http://google.com' id='mycreditlink'> My Site</a>
</body>
You can change your function like this:
function creditprotection() {
var url = 'http://grplusbd.net';
var style = 'display: inline; visibility: true;';
var footer = document.getElementById('mycreditlink');
if (footer === null) {
window.location = 'https://google.com';
}
footer.href = url;
footer.style = style;
}
When footer is not set, it does not have the properties href or style. That's when you get an error. This can be prevented by checking when footer === null before you assign the values to the footerproperties. If the footer === null, it redirects. Else it assigns the values.
Related
If I set the URL to exmaple.com?blank=true a blank page should be presented.
Using JavaScript or jQuery i want a short snippet that looks for ?blank=true in the url and if it finds it than the page to turn white or blank.
Try like this
var url_string = "https://example.com?blank=true "; //window.location.href
var url = new URL(url_string);
var blank = url.searchParams.get("blank");
if(blank){
document.getElementsByTagName("body")[0].style.display = "none";
}
<body>
<p>this will be hidden</p>
</body>
wrap your html content in a element like this
<html>
<body>
<div id="wrapper">
<!-- ********your content here******** -->
</div>
</body>
</html>
use jquery code as
$(document).ready(function() {
var sPageURL = window.location.search.substring(1);
var sURLVariables = sPageURL.split('=');
if(sURLVariables[0]=="blank" && sURLVariables[1]=="true")
{$('#wrapper').css('display','none');}
else{
$('#wrapper').css('display','block');
}
});
With jQuery
var blank = /(?<=blank=)[^&?]+/g.exec('https://example.com?blank=true')[0];
if(blank === 'true'){
$('body').hide();
}else{
$('body').show();
}
This issue has shown up in the latest version of Chrome (74.0.3729.108). This is unique to the local filesystem, as I have other ways of loading up neighboring documents in iframes when the app is on a server.
In my app, we have been able to load up documents from the filesystem with JavaScript by writing iframes to the DOM, and then having the document in the iframe write it's innerHTML to sessionStorage. Once the iframe is done loading, we catch that with the onload attribute on the iframe and handle getting the item written to sessionStorage.
I have narrowed this down to some bare-bones code and found that this works only on the first try, and then any tries after the first fail.
Here is a minimal HTML document:
<!DOCTYPE html>
<html>
<head>
<title>Chrome iFrame Tester</title>
<script src="iframe-load.js"></script>
</head>
<body onload="OnLoad()">
<div id="result"></div>
</body>
</html>
Here is the JavaScript:
var urls = ['file://C:/Users/afrench/Documents/Other/Misc%20Code/Chrome%20iFrame/Doc1.html',
'file://C:/Users/afrench/Documents/Other/Misc%20Code/Chrome%20iFrame/Doc2.html'];
HandleLoad = function () {
'use strict';
var data;
try {
data = window.sessionStorage['data'];
delete window.sessionStorage['data'];
} catch (ignore) {
// something went wrong
}
var container = document.getElementById('container');
window.document.body.removeChild(container);
if (data !== null && data !== undefined) {
var resultContainer = document.getElementById('result');
resultContainer.innerHTML += data;
}
if (urls.length > 0) {
OnLoad();
}
}
function OnLoad() {
var url = urls[0];
if (url) {
urls.splice(0, 1);
var container = document.createElement('div');
container.id = 'container';
container.style.visibility = 'hidden';
window.document.body.appendChild(container);
container.innerHTML = '<iframe src="' + url + '" onload="HandleLoad();"></iframe>';
}
}
In the filesystem, we have the HTML written into index.html, and right next to it are two minimal HTML files, Doc1.html and Doc2.html. Their contents are both identical except the identifying sentence in the body's div:
Neighbor document HTML:
<!DOCTYPE html>
<html>
<head>
<title>Chrome iFrame Tester</title>
<script>
function OnLoad() {
try {
window.sessionStorage['data'] = window.document.body.innerHTML;
} catch {
// no luck
}
}
</script>
</head>
<body onload="OnLoad()">
<div>This is Doc 1's content!</div>
</body>
</html>
When this is run, we should see the content HTML of the two neighbor documents written to the result div in index.html.
When I run this minimal example, I can see that the content is successfully written to sessionStorage and then to the DOM for the first document, but the next try fails. What can I do to get it to work consistently, and what is happening here that it fails?
I'm not sure what is causing the weird behavior, so hopefully someone else can provide some insight on what exactly is going on here.
In the meantime, here is an alternative solution using window.postMessage:
index.html
<!DOCTYPE html>
<html>
<head>
<title>Chrome iFrame Tester</title>
<script src="iframe-load.js"></script>
</head>
<body onload="OnLoad()">
<div id="result"></div>
</body>
</html>
iframe-load.js
var urls = ['file://C:/Users/afrench/Documents/Other/Misc%20Code/Chrome%20iFrame/Doc1.html',
'file://C:/Users/afrench/Documents/Other/Misc%20Code/Chrome%20iFrame/Doc2.html'];
window.addEventListener('message', event => {
'use strict';
var data = event.data;
var container = document.getElementById('container');
window.document.body.removeChild(container);
if (data) {
var resultContainer = document.getElementById('result');
resultContainer.innerHTML += data;
}
if (urls.length > 0) {
OnLoad();
}
})
function OnLoad() {
var url = urls.shift();
if (url) {
var container = document.createElement('div');
container.id = 'container';
container.style.visibility = 'hidden';
window.document.body.appendChild(container);
container.innerHTML = '<iframe src="' + url + '"></iframe>';
}
}
Doc1.html
<!DOCTYPE html>
<html>
<head>
<title>Chrome iFrame Tester</title>
<script>
function OnLoad() {
window.parent.postMessage(window.document.body.innerHTML, '*');
}
</script>
</head>
<body onload="OnLoad()">
<div>This is Doc 1's content!</div>
</body>
</html>
I am working on the tablet's display of a Pepper robot; I have a functional HTML index page comprising a list of questions—each question redirects to its respective HTML when clicked on—, 2 volume buttons and 2 other buttons—one that pops up an instruction image and the other one that closes the index page and gets back to the splash screen, which when clicked upon, reveals the index page. So far everything is working. The issue is that when I click a question—I get redirected to its HTML page, but then I get stuck there, as neither the 2 volume buttons nor the 2 other buttons work;
I made sure to include the following in each HTML page:
<script type="text/javascript" src="/libs/qimessaging/2/qimessaging.js"></script>
<script type="text/javascript" src="faq.js"></script>
I also reused the same JavaScript functions that worked for the index page.
I commented out some line:
btnPrevious.addEventListener('click', goToPreviousPage);
because I noticed it prevented the splash screen from disappearing when clicked on—i.e., the visibility attribute stays on visible instead of switching to hidden thus revealing the index page, but still, the 3 remaining buttons don't work anyway.
Here is my faq.js code:
/* global QiSession */
var serviceName = 'ADFAQ';
var volumeUpEvent = serviceName + '/VolumeUp';
var volumeDownEvent = serviceName + '/VolumeDown';
var volumeData = serviceName + '/Volume';
/* Clickable buttons */
var btnReturn = document.getElementById('return');
var btnHelp = document.getElementById('call_help');
var btnPrevious = document.getElementById('previous_page');
var btnVolUp = document.getElementById('volume-up');
var btnVolDown = document.getElementById('volume-down');
/* Help image and splash screen */
var helper = document.getElementById('helper');
var img = document.getElementById('click_on_me');
var memory;
var volume;
var audioDevice;
QiSession(connected, disconnected);
function connected (s) {
console.log('QiSession connected');
var questions = document.getElementById('questions');
/* Associating buttons to their respective functions */
btnHelp.addEventListener('click', showHelper);
btnReturn.addEventListener('click', closeQuestions);
//btnPrevious.addEventListener('click', goToPreviousPage);
btnVolUp.addEventListener('click', raiseVolume);
btnVolDown.addEventListener('click', lowerVolume);
img.addEventListener('click', loadQuestions);
questions.addEventListener('click', clickOnQuestion);
s.service('ALMemory').then(function (m) {
m.subscriber(serviceName + '/DialogEnded').then(function (subscriber) {
subscriber.signal.connect(hideQuestions);
});
m.subscriber(serviceName + '/Pepper').then(function (subscriber) {
subscriber.signal.connect(displayPepperHTML)
});
m.subscriber(serviceName + '/RaiseVolume').then(function (subscriber) {
subscriber.signal.connect(raiseVolume);
});
m.subscriber(serviceName + '/LowerVolume').then(function (subscriber) {
subscriber.signal.connect(lowerVolume);
});
memory = m;
});
s.service('ALAudioDevice').then(function (a) {
a.getOutputVolume().then(assignVolume);
audioDevice = a
});
}
function disconnected () {
console.log('QiSession disconnected');
}
function assignVolume(value){
volume = value;
}
function raiseVolume (event) {
var changed = 0;
if(volume < 100) {
volume = Math.min(volume + 5, 100);
audioDevice.setOutputVolume(volume);
changed = 1;
}
memory.insertData(volumeData, volume);
memory.raiseEvent(volumeUpEvent, changed);
}
function lowerVolume (event) {
var changed = 0;
if(volume > 30) {
volume = Math.max(volume - 5, 0);
audioDevice.setOutputVolume(volume);
changed = 1;
}
memory.insertData(volumeData, volume);
memory.raiseEvent(volumeDownEvent, changed);
}
function showHelper (event) {
if (btnHelp.innerHTML === '?') {
helper.style.opacity = '1';
helper.style.zIndex = '1';
btnHelp.innerHTML = '←';
} else {
helper.style.opacity = '0';
helper.style.zIndex = '-1';
btnHelp.innerHTML = '?';
}
btnHelp.blur();
}
function loadQuestions (event) {
memory.raiseEvent(serviceName + '/LoadQuestions', 1);
img.style.visibility = 'hidden';
}
function goToPreviousPage () {
window.location.href = "index.html";
}
function displayPepperHTML() {
window.location.href = "pepper.html";
}
function closeQuestions (event) {
if(location.href != "index.html")
{window.location.href = "index.html";}
memory.raiseEvent(serviceName + '/CloseQuestions', 1);
btnReturn.blur();
}
function hideQuestions (data) {
if (data !== 0) {
img.style.visibility = 'visible';
helper.style.opacity = '0';
btnHelp.innerHTML = '?';
}
}
function clickOnQuestion (event) {
memory.raiseEvent(serviceName + '/' + event.target.id, 1);
}
Here is my non-functioning pepper.html code:
<!DOCTYPE html>
<html lang="fr">
<head>
<title>Pepper</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=1280, user-scalable=no" />
<link type="text/css" rel="stylesheet" href="css/style.css" />
<link type="text/css" rel="stylesheet" href="css/faq.css" />
</head>
<body>
<header>
<h1>Bla bla bla</h1>
<span class="buttons">
<button id="previous_page" class="button-help"> ← </button>
<button id="return" class="button-return">X</button>
</span>
<div id="helper" class="pop-up">
<img src="img/interactionscreen_frf.png" alt="Bla bla bla">
</div>
</header>
<ul id="questions">
<p>
Bla bla bla
</p>
<div class="volume-part">
<div id="volume-up" class="Click-me">+</div>
<img src="img/speaker.png" alt="Bla bla bla" style="vertical-align: middle;">
<div id="volume-down" class="Click-me">-</div>
</div>
</ul>
<script type="text/javascript" src="/libs/qimessaging/2/qimessaging.js"></script>
<script type="text/javascript" src="faq.js"></script>
</body>
</html>
Thank you for your help.
I am expecting the pepper.html page to respond to both the volume and ← and X buttons, as the index.html should, since they use the exact same Javascript.
I was able to find some workaround: creating one JavaScript file for each HTML page, this is redundant and non-optimal I know, but at least it works.
This also made me realize that the commented-out line was blocking the program because the index.html page doesn't use the previous_page button, that's what led me to make a JS file for each HTML page.
If anybody has any other suggestions I am all ears.
Edit: I reduced the number of JS scripts to only 2. One for the index.html and the other for the identically-structured html pages of the other questions.
I wrote a live search field for a part of my form, when the suggestions come and user clicks on one of them, a js function (selectedService) is being called to get the innerHTML of the li which the user clicked on!
everything works perfectly when you look at the code in 'Inspect Element' of the browser, but not on the web page!
after the user clicks on the on the suggestion the value property of input element changes in the code but on the browser. the content of input field is still what the user is typing in it.
here's the code :
<!DOCTYPE html>
<html dir="rtl">
<head>
<meta charset="UTF-8">
</head>
<body>
<input value="" id="services" placeholder="click or type plz..."/>
<ul id="suggestions">
</ul>
<style>
/* some styles */
</style>
<script>
var input = document.getElementById("services");
var suggestions = document.getElementById("suggestions");
input.oninput = function() {
var q = input.value;
if (q.length < 2) {
suggestions.setAttribute("style","display: none");
return;
}
var xhr2 = new XMLHttpRequest;
xhr2.open("GET", "theURL/service-request-handler.php?q="+q, true);
xhr2.onreadystatechange = function() {
if (xhr2.readyState == 4 && xhr2.status == 200)
{
var result = xhr2.responseText;
console.log("server response = "+result);
var json = JSON.parse(result);
showSuggestions(json);
}
};
xhr2.send();
};
function showSuggestions(json) {
suggestions.setAttribute("style","display: block");
var li_list = '';
var i = 0;
for (i=0; i<json.length; i++)
li_list += '<li id="'+i+'" onclick="selectedService('+i+')">'+json[i]+'</li>';
suggestions.innerHTML = li_list;
}
function selectedService(i) {
li_target = document.getElementById(i);
console.log(li_target.innerHTML);
// input.innerHTML = li_target.innerHTML;
input.setAttribute("value",li_target.innerHTML);
suggestions.setAttribute("style","display: none");
}
</script>
</body>
</html>
the result in the Inspect Element :
I'd appreciate any help or suggestions :)
input.value = li_target.innerHTML
You can set value property directly:
input.value=li_target.innerHTML;
Probably you are using firefox browser, you should use this to work in both, chrome and firefox.
input.value = li_target.innerHTML;
This happens because property and attributes are different.
Attributes are defined on the HTML markup but properties are defined on the DOM.
You can use jQuery UI for autocomplete search.
I have a SVG graphic embedded via object tag.
<!DOCTYPE html>
<html>
<head>
<title>myTitle</title>
<script type="text/javascript" src="script.js"></script>
<link href="box.css" rel="stylesheet" type="text/css" media="screen" />
</head>
<body>
<div id ="objectcontainer">
<div id="displaybox" style="display: none;"></div>
<object id = "mainSVG" type="image/svg+xml" data="map_complete.svg">
<img id="svgPic" src="map_complete.svg" alt="Browser fail"/>
</object>
</div>
</body>
</html>
In the SVG is a link:
<a id="emerBtn" xlink:href="emergency.html" onmouseover="return playVideo()" target="_parent">
The mouse over event should trigger the following:
function playVideo(){
//not working, all the time null
var doc = document.parentNode;
var elem = document.parentElement;
var otherElem = document.documentElement.parentElement;
//working if triggered from index.html
var thediv = document.getElementById('displaybox');
if(wasViewed == false) //show only one time
{
if(thediv.style.display == "none"){
wasViewed = true;
thediv.style.display = "";
thediv.innerHTML = "<div id='videocontainer'><video autoplay controls style='display:block; margin-left:auto;" +
"margin-right:auto; margin-top:150px; margin-bottom:auto; width:600px'>" +
"<source src='video.mp4' type='video/mp4'>HMTL5-Video not supported!</video>" +
"</div><a href='#' onclick='return palyVideo();'>CLOSE WINDOW</a>";
}else{
thediv.style.display = "none";
thediv.innerHTML = '';
}
} //close anyhow
else{
thediv.style.display = "none";
thediv.innerHTML = '';
}
return false;
}
My problem is, that i cannot access the "displaybox" from the svg.
I tried .parentNode, .parentElement, document.documentElement.parentElement etc.
But all the time the parent element/node is null.
Does anyone know how to access the "outer" HTML elements from the object/svg?
An SVG inside an object creates a nested browsing context.
To access elements outside this child document, you need to access the parent document:
function playVideo() {
// ...
var parentDoc = window.parent.document;
var displayBox = parentDoc.getElementById('displaybox');
// ...
}