I need to change the image source onClick, for that i created the jquery click and the image source is not effecting until the click completes
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<style>
.bg {
background-image: url("paper.gif");
background-color: #cccccc;
}
</style>
<script>
$(document).ready(function(){
$("a").click(function(){
//alert($("#img").attr("src"));
$("#img").attr("src","https://www.w3schools.com/images/driveicon.png");
//alert($("#img").attr("src"));
$("h1").attr("class","");
//alert('hi');
sleep(10000000);
//alert('hi1');
});
});
function sleep(milliseconds) {
var start = new Date().getTime();
for (var i = 0; i < 1e7; i++) {
if ((new Date().getTime() - start) > milliseconds){
break;
}
}
}
</script>
</head>
<body>
<h1 class="bg">Hello World!</h1>
<a>
<img id="img" src="https://tpc.googlesyndication.com/daca_images/simgad/16193915113295470335?w=195&h=102"/>
</a>
<br>
<p id="img1"/>
</body>
</html>
In the above code, image src changing after few seconds of the click.
I need to change the image source immediately after click.
Thanks in advance
Your problem is because Javascript is single-threaded. Hence while the massive loop in your sleep() function is running nothing else can happen. In turn, this means that the DOM does not get time to render the change you made to the src of the img element, and it only appears to occur once the loop terminates.
The way to solve this is to make use of one of the timer functions which JS provides. In your case setTimeout() would be the most appropriate:
$(document).ready(function() {
$("a").click(function() {
$("#img").attr("src", "https://www.w3schools.com/images/driveicon.png");
$("h1").attr("class", "");
setTimeout(doSomethingElse, 1000);
});
});
function doSomethingElse() {
console.log('Doing something else here...');
}
.bg {
background-image: url("paper.gif");
background-color: #cccccc;
}
#img {
width: 100px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1 class="bg">Hello World!</h1>
<a>
<img id="img" src="http://i.imgur.com/HazyBBo.jpg" />
</a><br />
<p id="img1" />
Related
This topic has been covered a few times but there is no clear solution using Javascript. All responses were quite nebulous. Please help me out as there hasn't been a straightforward answer anywhere that I could find on any site.
I am trying to execute a function when any click occurs within an iframe window. Specifically, a click on a hyperlink on page displayed within the iframe. However just being able to have any click within an iframe trigger a function is enough for me.
I have a function Show() that I would like to run when an iframe is clicked. So basically a link is automatically hidden and when the first link is clicked it is shown. When the "click to hide" link that shows up is clicked, the "click to hide" link is hidden. I want the "click to hide" link to show up when someone clicks within the iframe. I need it to run the function every time a click occurs within the iframe. Thanks.
Code:
<html>
<head>
<title>StackOverflow Example</title>
<style>
.visible {visibility: visible}
.hidden {visibility: hidden}
</style>
<script type="text/javascript">
var visible_link = true;
function Hide() {
document.getElementById("my_div").className = "hidden";
document.getElementById("my_button").value = "SHOW";
}
function Show() {
document.getElementById("my_div").className = "visible";
document.getElementById("my_button").value = "HIDE";
}
</script>
</head>
<body>
<center>
<iframe src="http://www.google.com" height=549 width=100% frameborder=0 name = "hello"></iframe>
click to show below link
<div id="my_div" class="hidden">
<a href="http://www.google.com" target="hello" onclick = "Hide();" >click me to hide</a>
</div>
</center>
</body>
</html>
If there is some kind of domain issue please explain and please, if you have time and are able, explain what the issue is and how to fix such a problem. Edits to this code are welcome for the sake of coming up with a solution that achieves the goal that I outlined.
You guys are great.
UPDATE
I have implemented apaul34208's response which technically works, but I am having three problems.
1) How can this take up the full width of the window (I tried adding 100% to the width value under #cover)
2) When the div covers all of the iframe, the webpage within the iframe is not clickable
3) The div is not transparent.
If someone can edit the below code and have the div take up all of the width while being transparent with the iframe's webpage being entirely clickable - I would be very appreciative and happy.
<html>
<head>
<title>Show / Hide Link</title>
<style>
.visible {visibility: visible}
.hidden {visibility: hidden}
#cover {
position: absolute;
background: rgba(0, 0, 0, 0.5); /* added for example */
height: 150px;
width: 150px;
}
</style>
<script type="text/javascript">
var visible_link = true;
function Hide() {
document.getElementById("my_div").className = "hidden";
document.getElementById("my_button").value = "SHOW";
}
function Show() {
document.getElementById("my_div").className = "visible";
document.getElementById("my_button").value = "HIDE";
}
</script>
</head>
<body>
<center>
<div id="cover" onclick="Show();"></div>
<iframe src="http://stackoverflow.com" height=549 width=100% frameborder=0 name = "hello"></iframe>
links
<div id="my_div" class="hidden">
<a href="http://stackoverflow.com" target="hello" onclick = "Hide();" ><-</a>
</div>
</center>
</body>
</html>
I would strongly advise against doing this for any reason, this is usually referred to as "Clickjacking", and it is an extremely bad practice.
So... Please don't ever do this.
But for educational purposes... You can cover an iframe with another positioned element and capture the click on that element:
var visible_link = true;
function Hide() {
document.getElementById("my_div").className = "hidden";
document.getElementById("my_button").value = "SHOW";
}
function Show() {
document.getElementById("my_div").className = "visible";
document.getElementById("my_button").value = "HIDE";
}
.visible {
visibility: visible
}
.hidden {
visibility: hidden
}
#cover {
position: absolute;
background: rgba(0, 0, 0, 0.5); /* added for example */
height: 150px;
width: 300px;
}
<div id="cover" onclick="Show();"></div>
<iframe id="iframe" src="http://stackoverflow.com"></iframe>
<div id="my_div" class="hidden">
click me to hide
</div>
Once again. Don't ever do this.
I found a solution. It's not perfect but I figured out that I don't really need to it to detect every iframe click and this is good enough. I originally wanted to make a back button appear if a link within the page that is within the iframe was clicked (which would return the user to the main page within the iframe where they started). Obviously they may click randomly and not hit a hyperlink and the back link would pop up for no reason (while they are still on the main page). That's fine I guess but if someone knows of a better solution let me know. Most people would just hit a link to begin with as the page only has hyperlink interaction I presume.
I hope my working code below helps people who are exploring this topic in the future.
Code:
<html>
<head>
<title>StackOverflow Example</title>
<style>
.visible {visibility: visible}
.hidden {visibility: hidden}
}
</style>
<script type="text/javascript">
var visible_link = true;
var inIframe = false;
function Hide() {
document.getElementById("my_div").className = "hidden";
document.getElementById("my_button").value = "SHOW";
}
function Show() {
document.getElementById("my_div").className = "visible";
document.getElementById("my_button").value = "HIDE";
}
function checkClick() {
if (document.activeElement
&& document.activeElement === document.getElementById("hello")) {
if (inIframe == false) {
Show();
inIframe = true;
}
} else
inIframe = false;
}
setInterval(checkClick, 200);
</script>
</head>
<body>
<center>
<div id="cover" onclick="Show();"></div>
<iframe src="http://w3schools.com" height=549 width=100% frameborder=0 name = "hello" id = "hello" style =""></iframe>
click to show link
<div id="my_div" class="hidden">
<a href="http://w3schools.com" target="hello" onclick = "Hide();" >click to hide</a>
</div>
</center>
</body>
</html>
I'm creating a template for wordpress , and I would like to insert a picture while the page is loading , but I want the load to last at least 3 seconds , you can assign a minimum time of execution of a function ? in this case i use the $ ( window ) .load ( ) and i add a class to a div placed inside the page to show it.
it works but i want the loadig image to be show for 3 seconds and after the window load event i want to remove the class that i added to sho the div, this is my code
<!DOCTYPE html>
<html>
<head>
<title>Index</title>
</head>
<body>
<div class="loader">
loading image
</div>
<div class="content">
main content
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"> </script><!-- jQuery -->
</body>
</html>
this is my css
.loader{`enter code here`
position: fixed;`enter code here`
top: 0;
bottom:0;
right: 0;
left: 0;
background-color: blue;
z-index: 999;
display: none;
}
.show-loader{
display: block;
}
.content{
background-color: red;
height: 600px;
}
rhis is my JQuery
jQuery(document).ready(function($) {
$(window).load(function() {
$('.loader').addClass('show-loader');
});
$('.loader').removeClass('show-loader');
});
You can use a timer with setTimeout() to trigger an event some specific amount of time in the future. It isn't clear to me exactly what you're trying to do, but if you just want to remove the class 3 seconds after you applied it, you can do this:
jQuery(window).load(function() {
jQuery('.loader').addClass('show-loader');
// remove the class, three seconds later
setTimeout(function() {
jQuery('.loader').removeClass('show-loader');
}, 3000);
});
FYI, I removed the jQuery(document).ready() part of the code because I can't see any reason that it is needed. The jQuery(window).load() event always come after the .ready() event and window is always available.
You can simple put your Javascript into a function that will be called after 3 Seconds / 3000 Miliseconds.
jQuery(document).ready(function($) {
$(window).load(function() {
$('.loader').addClass('show-loader');
});
setTimeout(loadImage, 3000);
}
function loadImage(){
$('.loader').removeClass('show-loader');
});
I'm working on an application with modal overlays that appear within iFrames when the corresponding buttons are pressed. To close one of these modal overlays, the Cancel button is defined in the parent window this way:
Cancel
I'd like to replace this with a JavaScript function (let's call it onCancel() ) so I can reset some values if needed in addition to closing the overlay. What is the JavaScript equivalent to "#close"?
You can't close an iFrame, you either have to remove or hide it. The example below removes the iframe. If you just want to hide you can replace the last line (containing removeChild with this one frame.style.display="none"; You can then get it back by using this line frame.style.display="block";
<!DOCTYPE html>
<head>
<title>test</title>
<style type="text/css">
.top {
height: 100px;
width: 200px;
background-color: blue;
}
</style>
<script type="text/javascript">
function removeIFrame() {
var frame = document.getElementById("iframe");
frame.parentNode.removeChild(frame);
}
</script>
</head>
<body>
<div class="top" onclick="removeIFrame();"></div>
<iframe id="iframe" src="/" width="200" height="100"></iframe>
<div class="top"></div>
</body>
<!DOCTYPE html>
<head>
<title>test</title>
<style type="text/css">
.top {
height:100px;
width:200px;
background-color:green;
}
</style>
<script type="text/javascript">
function removeIFrame() {
var frame = document.getElementById("target");
frame.parentNode.removeChild(frame);
}
</script>
</head>
<body>
<div class="top" onclick="removeIFrame();"></div>
<iframe id="target" src="http://www.disney.com" width="100" height="100"></iframe>
<div class="top"></div>
</body>
The approach that works for me is to define the following JavaScript function in the parent page:
function onCancel()
{
var myIFrame = document.getElementById("myIFrame");
var myForm = myIFrame.contentDocument.myForm;
var stuffWasChanged = myIFrame.contentDocument.stuffWasChanged;
if (stuffWasChanged == "true")
myForm.action = "reset.do";
myForm.submit();
location.href = '#';
}
Note that if the stuffWasChanged flag was not set to true, then no action is defined for the form in question, so the modal overlay simply goes away without any servlet method being called.
I am trying this code. It is supposed to generate an image and set its container div to full-screen when the p is clicked.
<html>
<head>
<style>
img { height: 643px; width: 860px; }
img:-moz-full-screen { height: 643px; width: 860px; }
div:-moz-full-screen { background: white; }
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script>
$(function() {
$("p").click(function() {
setTimeout(function() {
$("body").prepend("<div><img src = 'http://i.stack.imgur.com/lBZKC.jpg?s=128&g=1' /></div>");
$("div").get(0).mozRequestFullScreen();
},5000);
});
});
</script>
</head>
<body>
<p>Foo</p>
</body>
What it does is wiat for 5 seconds and prepend the image all right, but it is not set to full-screen. However, if you remove the timer and do it normally:
$("p").click(function() {
$("body").prepend("<div><img src = 'http://i.stack.imgur.com/lBZKC.jpg?s=128&g=1' /></div>");
$("div").get(0).mozRequestFullScreen();
});
it works fine, it prepends the image and immediately sets it to full-screen.
Is this intentional, or a bug? Either way, is there any way to make it work?
The method has to be called in response to a user input event (ie. keypress, mouseevent).
the goal here is onclick of 1.gif, everything with .panel1 class disappears(style.display.none), and everything with a .panel2 class becomes visable (style.display.inline)
I'm new at this..so I think its just a syntax issue with ' ' or maybe " "
<!DOCTYPE html>
<html>
<head>
<title>main</title>
<meta charset="utf-8">
<style type="text/css">
.panel1 {display:inline;}
.panel2 {display:none;}
</style>
<script type="text/javascript">
function panelTransition(panelOut,panelIn)
{
document.getElementByClass(panelIn).style.display="inline";
document.getElementByClass(panelOut).style.display="none";
}
</script>
</head>
<body>
<img class="panel1" src=1.gif onclick="panelTransition(panel1,panel2)" />
<img class="panel2" src=2.gif />
</body>
</html>
There is no getElementByClass. It's getElementsByClassName, and it returns an array of items, so you'll need to modify your code to loop through them.
function panelTransition(panelOut, panelIn) {
var inPanels = document.getElementsByClassName(panelIn);
for (var i = 0; i < inPanels.length; i++) {
inPanels[i].style.display = 'inline';
}
var outPanels = document.getElementsByClassName(panelOut);
for (var i = 0; i < outPanels.length; i++) {
outPanels[i].style.display = 'none';
}
}
If you were using a JavaScript library, like jQuery, this would be much easier to do. Also, as has been mentioned, you need quotes around your arguments to panelTransition.
<img class="panel1" src=1.gif onclick="panelTransition('panel1', 'panel2')" />
<img class="panel2" src=2.gif />
<img class="panel1" src=1.gif onclick="panelTransition('panel1','panel2')" />
I think you need quotes there
<html>
<head>
<title>main</title>
<meta charset="utf-8">
<style type="text/css">
.panel1 {display:inline;}
.panel2 {display:none;}
</style>
<script type="text/javascript">
function panelTransition(panelOut,panelIn)
{
// panelIn gets turned on
setDisplay(panelIn,"inline");
// panelOut gets turned off
setDisplay(panelOut,"none");
}
function setDisplay(className,displayState)
{
// retrieve a list of all the matching elements
var list = document.getElementsByClassName(className);
// step through the list
for(i=0; i<list.length; i++) {
// for each element, set the display property
list[i].style.display = displayState;
}
}
</script>
</head>
<body>
<img class="panel1" src="1.gif" onclick="panelTransition('panel1','panel2')" />
<img class="panel2" src="2.gif" onclick="panelTransition('panel2','panel1')" />
</body>
</html>
Or you can accomplish the same in jQuery
// fires when the page is up and running
$(document).ready(function(){
// find all the panel1 elements,
// attach an on click handler
$(".panel1").bind("click", function(){
// find all the panel1 elements
// set their css display property to inline
$(".panel1").css("display","inline");
// find all the panel2 elements
// set their css display property to none
$(".panel2").css("display","none");
});
$(".panel2").bind("click", function(){
$(".panel2").css("display","inline");
$(".panel1").css("display","none");
});
});
You can learn all about jQuery here : http://www.jquery.com/
You'll only be able to get your code to run once, as soon as you click a panel1 image all of the panel2 images will disappear, you won't be able to click them back on ever again.