When you set an html element to have display: none, the content inside that element (e.g. images and flash) wont be loaded by Firefox until the element is set to be displayed.
But Internet Explorer dont behave like that. It loads everything inside hidden elements from start.
Is there a way to prevent IE from loading such content without using javascript?
Don't insert any content into that element? Only load it using ajax when the user makes is visible.
As my question regarded a solution not using javascript, I'll answer my own question and just say there is no way so far to prevent IE from loading external files that are part of hidden content.
As the other answers suggest it, there are ways to avoid the problem, but not to solve it. So the answer to my specific question is "NO".
Actually if you set the visibility to hidden, ie won't load it.
Here is an example of what ZippyV is talking about (with a twist)... copy and paste the code below into a new file with an HTML extension and run it!
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script>
</head>
<body>
<h1>This is the title</h1>
<p>This is a paragraph</p>
<div id="hidden-content"></div>
<p>Another paragraph</p>
<input type="button" id="add-content" value="Add Hidden Content" />
<script type="text/javascript">
$(document).ready(function() {
$("#add-content").click(
function() {
var info = unescape('%53%68%68%68%2E%2E%2E%20%73%65%63%72%65%74%20%69%6E%66%6F%72%6D%61%74%69%6F%6E');
$("#hidden-content").html(info);
}
);
});
</script>
</body>
</html>
The twist is that the hidden content to be displayed is first escaped (using the Javascript escape() function). Also, you can place the javascript in a separate file!
display: none should be hiding the element contents from ie as well as any other browsers.
Did you close all the tags?
function hide_show_content(el_ID){
//try <element hidden> property NOT IExplorer
try{el_ID.hidden = ((el_ID.hidden) ? false : true);}catch(_e){}
//try style=display:none for IExplorer
try{
if(el_ID.style.display==""){return;}
el_ID.style.display = ((el_ID.style.display=="none") ? "inherit" : "none");
}catch(_e){}
}
<span id="text#1" style="display:none;" hidden>TEXT TO BE HIDDEN or SHOWN laiter.</span>
Click to show TEXT
Related
I need to be able to embed HTML snippets (nested elements and CSS) fetched from a remote api inside my document, in a way that their CSS won't affect on my whole document.
I need to fetch (random) gmail messages HTMLs and embed them in my website. The thing is that most messages have their CSS tags to style the message html. The problem is that some of these CSS mess up with my own document CSS. How can I embed an html snippet with CSS, in a way that it will have its own scope and not interact with what's outside of it?
<html>
<body>
<h1>Your gmail messages</h1>
<div id="gmail-message">
<!-- Here to be injected automatically. Changing classes, etc is not possible -->
<h1>This a gmail message</h1>
<style type="text/css">
h1 {
color: red;
}
</style>
</div>
</body>
</html>
The h1 tag outside the gmail-message div is also affected and is therefore red.
What do I need to do to get around this?
One solution would be to use an iframe.
Another solution would be to extract all css and html, then add an attribute (example: scope) to every html tag inside of gmail-messag.
Then modifiy the css and add an attribut selector.
Example:
<html>
<body>
<h1>Your gmail messages</h1>
<div id="gmail-message">
<!-- Here to be injected automatically. Changing classes, etc is not possible -->
<h1 scoped>This a gmail message</h1>
<style type="text/css">
h1[scoped] {
color: red;
}
</style>
</div>
</body>
</html>
But propably using an ifram is a more easy solution.
Easiest way is to use iframe / object / embed tag (tested on firefox).
If you can use Javascript and HTML5 you can also use shadow DOM or make custom element that uses slot tag (also in shadowRoot).
You might want to look into using The Shadow DOM
An important aspect of web components is encapsulation — being able to
keep the markup structure, style, and behavior hidden and separate
from other code on the page so that different parts do not clash, and
the code can be kept nice and clean. The Shadow DOM API is a key part
of this, providing a way to attach a hidden separated DOM to an
element.
However, be aware this is new tech and, as always, Microsoft browsers don't handle it.
I've found my solution.
First, insert an empty iframe tag somewhere.
<iframe id="iframeTag" src="about:blank"></iframe>
Second, load the html snippet into that iframe, the following way:
var doc = document.getElementById('iframeTag').contentWindow.document;
doc.open();
doc.write(<html_snippet>);
doc.close();
This way the <html_snippet>'s css won't mix up with the outer document's.
Use the srcdoc attribute on iframe to scope your HTML and CSS.
<iframe srcdoc="<p>Hello world!</p>"></iframe>
It's supported on all major browsers: https://caniuse.com/iframe-srcdoc
I am used to using href="#" during development as placeholder links so that if you accidentally click on it, nothing happens and it will not jump the page around while testing the page i.e. you know exactly which is a placeholder and which is a broken link.
However, When baseurl is defined in the head, href="#" fetches the baseurl address instead of the current page and appends the # at the end. This causes placeholder links to load the index page always. Annoying.
<!doctype html>
<html>
<head>
<base href="http://localhost">
</head>
<body>
<p>placeholder # only</p>
<p>empty string</p>
</body>
</html>
Is there a way to get back the "placeholder" behavior other than specifying the full path in the <a>'s href?
href="javascript:void(0);"
try this, so onclick the page wont jump nor will it be refreshed
This might be more of a hack than anything but you could always just ignore clicks from anchor tags:
$('body').on('click', 'a[href="#"]', function(e) { e.preventDefault(); });
If you are currently in development I suggest removing your base tag.
It defines the behavior of all the anchor tags on that page. For more information :
http://www.w3schools.com/tags/tag_base.asp
do it with javascript:
function onClick(event) {
document.getElementById('id').scrollIntoView({
behavior: 'smooth'
});
}
https://stackoverflow.com/a/48901013/4185912
I need to store some hidden HTML for each li element. What's the best way to do this?
I've tried storing it as data on each li element but the hidden HTML tags screw up the li element.
I've managed to do it by storing the data in a hidden text area for each li.
Is this the best way to do it? Or is there a better way.
I'm storing around 200 chars.
Put your hidden HTML in a div / span with a CSS class that has:
display: none;
See the display property.
You can put a hidden field at each li to put the data! I think that hidden fields will work well, and theres no limit for the amount of data.
<input type="hidden" id="myId" value="value here pls..." />
Hopes this help you!
<input type="hidden" value="your hidden stuff here" />
Is your data HTML or is it content? Do you need it for programatic reasons? If it's just a matter of hiding content, as you would for a screen reader when using image-swap, for example, use css:
#my_content {
text-indent: -9999px;
}
Beyond that you could use hidden form fields, or simply use CSS to hide the element entirely.
try this
<div style="display:none;">your html here.....</div>
One way I've recently learned to do this is to use <script> tags. You can add an ID to the script tag, and reference in javascript using that ID to fetch the content and do something with it. I use this for inline templates.
http://www.bennadel.com/blog/2411-Using-Underscore-js-Templates-To-Render-HTML-Partials.htm
<script id="foo" type="text/template">
<p>your text here</p>
</script>
now in real javascript:
<script type="text/javascript">
<!-- assume jquery for the sake of assuming something -->
$(function() {
fooTemplate = $("#foo").clone();
$("#target").append(fooTemplate);
});
</script>
I created a fiddle, but I had to use a div in the HTML area because fiddle doesn't like having an extra script node... The principle is the same -- just change to script in your html in your page.
If your <li> are children of an <ol> element and values you want to store are integers, then you can store them as
<li value="11">DISPLAY ITEM</li>
another approach:
if you want your extra HTML DATA to be present, but you don't want to render it at all (i assume this because you said that you tried to hide them inside a textarea -and thats why im posting this answer) then why not just put it inside comments?
<li> your code....
<!--
<div>my hidden html code of this li, of course i won't have nested comments in here!!!</div>
-->
</li>
Of course this is tricky, and not easy to get this data, but if you need this just for debug it will be ok.
Otherwise i'm in favor of display:none in a wrapped div.
Captain Obvious.
Here are two methods not mentioned in other answers.
The advantage of both methods is that, when you're working in your HTML programming environment, you get normal syntax coloring and error-checking.
Method 1
<template>
<div>Here's my hidden HTML.</div>
</template>
Method 2
<span hidden>
<div>Here's my hidden HTML.</div>
</span>
I've got a few lines that look like this:
<input type="hidden" name="email" value="email#email.com" style="display:none" >
Each one is adding extra space, even though I've used the type hidden and display:none. I'm starting to think it's something in the CSS (http://www.pastebin.ca/2350649), but after changing up a few things can't find what is causing it either.
The input is all inside a form, if that makes a difference.
It's not the input element, but rather the html. If you have a setup like:
text
<input>
more text
The newlines/spaces between the text and the input element are rendered.
The simplest solution is of course to just remove that whitespace in your html when it's emitted. If you can't do that, one trick is to add font-size: 0 to the container and font-size ? to the individual elements to display.
http://jsfiddle.net/ExplosionPIlls/cs63w/
step1: add your codes in a div element with an id tag like this:
<div id="remove_br"><input type="hidden" name="email" value="email#email.com" style="display:none" ></div>
step2: add this jQuery code in your page before </html> tag:
<script type="text/javascript">
$("#remove_br").find('br').remove()
</script>
Note: don't forget to add this code for calling jQuery
<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
For beginner programmer: If you don't want to download and host jQuery yourself, you can include it from a CDN (Content Delivery Network).
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
</head>
Adding jQuery to Your Web Pages click here.
I have a web-page that contains a hidden <div> using display: none; and I have a button on the page, that when clicked will change the visibility of the <div>, and overlay it on top of everything else (because it has a z-index set).
Within this <div>, I have a Google Map embedded using an iFrame with the Google Map pin dropped on the location I am trying to show to my users.
The problem
Because the Google Maps iFrame is loading on the page load and while the <div> is hidden, it means that when the <div> is shown the Google Map is not aligned properly (the pin and central location are now in the top left hand corner)
The solution I am looking for
I know that some people are probably going to tell me ways in which I "should" recode my entire page. What I am actually looking for is some sort of onClick function I can set that will reload the iFrame so that the map is properly centered.
Things to know
This iframe has a Google Maps page as its src. i.e. a URL rather than a link to a file in my site.
Any help would be greatly appreciated! A lot of code I have looked at searching the net seems to work at refreshing a specific file that is referenced rather than an external URL.
Would it work if I embedded the map in another HTML file, and then placed that HTML file as the frame source?
I had this similar issue and solved it by changing the css style of the div through jquery, and changing the place where I put the iframe of google map.
The problem
The jquery code:
<script type="text/javascript">
$(function(){
$("#map_link").click(function(event) {
event.preventDefault();
$("#map").slideToggle();
});
});
</script>
The HTML:
I had the link and the google map iframe loaded inline into a div with a display:none css style. Because a display:none style makes the div width:0 and height:0, the address requested in google map doesn't display properly.
<a id="map_link" href="#">See map.</a>
<div id="map" style="display:none">google_map_iframe_here</div>
The solution
The jquery code
<script type="text/javascript">
$(function() {
$("#map_link").click(function(event) {
event.preventDefault();
$("#map").slideToggle();
$("#map").html('google_map_iframe_here').css('display','block');
});
});
</script>
The HTML: The div where I used to put the map now is empty, because I load the map only when clicking on the link, and at that moment I change the css style from display:none to display:block, so the map shows well.
<a id="map_link" href="#">See map.</a>
<div id="map" style="display:none"></div>
Hope this helps!
Have a good coding day!
I'm no pro, but I removed the onload="initialize()" from the body tag and changed it to onclick="initialize()" in the button that unhides the div. This seems to work now.
I'm not using an iframe (I'm using version 3 of the Google Maps API), but just had the same "not aligned properly" issue due to a 'hidden' div. My fix, instead of using display: none, which removed it from the DOM entirely, I used visibility, and height like so:
.myMapDiv {
visibility: hidden;
height: 0px;
}
I believe what's happening is that because 'visibility: hidden' actually keeps the element in the DOM still, the map is able to render as intended. I've tested it out in FF/Chrome/IE 7-9 and seems to be working so far without issue.
After hours of searching on the Internet and getting no results I decided to try what I put in as my final side note on my question and it worked!
I simply made a second file called map.html and inside the code was literally:
<html>
<iframe> </iframe>
</html>
with obviously the Google Maps source and then in my main page I had the src for the iframe linked to pages/map.html instead of the Google Map link.
instead of hiding the div with display:none, use something like position: absolute; top: -9999px; left: -9999px
then, when you want to show the content for that div, set those properties to position: static; top: auto; left: auto or something like that
You can simply refresh the iframe like this:
var myIframe = jQuery('#myIframe');
myIframe.attr('src',myIframe.attr('src')+'');
I had the same problem, my solution was to set both the div & the iframe to 0px height and then have it changed to the desired height when toggled.
<script language="javascript">
function toggle() {
var ele = document.getElementById("toggleText");
var ifr = document.getElementById("iframe");
var text = document.getElementById("displayText");
if(ele.style.visibility == "visible") {
ele.style.visibility = "hidden";
ele.style.height = "0px";
ifr.style.height = "0px";
text.innerHTML = "<img src='#' border='0' width='180' height='65'>";
}
else {
ele.style.visibility = "visible";
ele.style.height = "420px";
ifr.style.height = "420px";
text.innerHTML = "<img src='#' border='0' width='180' height='65'>";
}
}
</script>
<div id="mb">
<a id="displayText" href="javascript:toggle();"><img src="#" border="0" width='180' height='65'></a>
</div>
<div id="toggleText" style="visibility: hidden; height: 0px;">
<p><iframe id="iframe" style="height: 0px;" src=#" width="650">
</iframe></div>
<script type="text/javascript">
$(document).ready(function (){$("#showMap").slideUp();})
</script>
<script type="text/javascript">
function showMap()
{
$("#showMap").slideToggle();
}
</script>
Show / Hide Map
<div id="showMap" style="margin-left:15px; width:615px; height:400px;">
<?php require_once "map.php";?>
</div>
There is a solution using both css and jQuery.
First you need a wrapper div without height which will include the iframe.
In this way the iframe will load normally without be visible at all.
Next using jQuery you can display/hide the iframe.
HTML
<div id="map-show">Show Map</div>
<div id="map-hide">Hide Map</div>
<div id="map-wrapper" style="height:0; overflow:hidden;">
<div id="gmap">
<iframe width="850" height="650" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="xxx"></iframe>
</div>
</div>
CSS
.hidden {
display: none;
}
jQuery
$(document).ready(function() {
$('#map-show').on('click',function(){
// Remove class hidden from map - Display map
$('#gmap').removeClass('hidden');
// Set height to map container div - ONLY one time needed
$('#map-wrapper').css('height', 'auto');
});
$('#map-hide').on('click',function(){
// Add class hidden to map - Hide map
$('#gmap').addClass('hidden');
});
});
I have been struggling with something like this as well. Where I initially add a class .hidden which is display: none;. But when I toggle .hidden, the map is not centered. I found that waiting until the map is fully loaded, using the idle event listener before adding the class .hidden solved all my display issues.
google.maps.event.addListenerOnce(map, 'idle', function(){
// do something only the first time the map is loaded
$mapContainer.addClass('hidden');
});
reference:
How can I check whether Google Maps is fully loaded?
You could use visibility hidden and use jQuery to show and hide it.
$('click-button').click(function(){
var visibility = $("hidden-div").css("visibility");
if (visibility == "hidden")
$("hidden-div").css("visibility","visible");
else
$("hidden-div").css("visibility","hidden");
});
Here is a solution that does not require any programming at all!
When getting the embed code, click "customize and preview embedded map", and then just drag the map down and to the right so that the push pin is in the lower right corner and then grab the new embed code.
When the map centers in hidden mode, it will still come up correctly when expanded. (not perfect I know, but if all you really want is for the push pin to show on the map, totally works)
Same issue, easy solution.
css hidden leave a space in html flow. I don't know if a css position outside the screen is well accepted on every device and get a block perfectly hidden.
jquery is nice working with block width and height.
css:
#map {overflow:hidden; float:left;}
html:
show
hide
<div id="map">
<iframe width="100%" src="http://maps.google.com/maps f=q&source=s_q&hl=en&geocode=&ie=UTF8&iwloc=A&output=embed ...>
</div>
javascript:
var w=sames as gmap width;
var h=sames as gmap height;
$(document).ready(function(){
$("#map").width(0);
$("#map").height(0);
$("#btn_show").click(function(){
$("#map").show();
$("#map").width(w);
$("#map").height(h);
});
$("#btn_hide").click(function(){
$("#map").hide();
});
})
I encounted the same problem.
Solution
Using iframe as an external source works.
online demo
http://jsbin.com/nogomi/1
Make sure that iframe element's name attribute is the same as a element's target attribute
Inspired from https://developers.google.com/maps/documentation/javascript/
in CSS:
#googleMap { visibility: hidden; }
Original
beim Klick der die Karte öffnen soll jQuery:
EDIT
jQuery when you click to open the map:
$('#googleMap')
.css('display','none')
.css('visibility','visible')
.fadeIn(500);
});