Why not wrap content within `<noscript>`? - html

It seems common to use the following HTML structure to accommodate
users who have enabled/disable javascript:
<html>
<style>
div.body { display:none; }
.body > ... { ... }
</style>
<script>
document.onload( function() {
javascript(CONTENT => div.body);
});
</script>
<noscript>
<style>
body > :not(noscript) {
display:none;
}
</style>
</noscript>
<body>
<div class="body">
</div>
<noscript class="body">
CONTENT
</noscript>
</body>
</html>
The mechanism uses a <div>; whose display attribute, initially set
to none, is subsequently set to block|grid|etc. and populated with
CONTENT once the page is loaded; alongside a <noscript>; which is
pre-populated with CONTENT.
No one seems to suggest simply popping the CONTENT within
<noscript> into the <body> when javascript is available as follows
:
<html>
<style>
.body { ... }
.body > ... { ... }
</style>
<script>
document.onload( function() {
let noscript = document.querySelector("noscript");
noscript.outerHTML = noscript.innerHTML;
});
</script>
<noscript>
<style>
body > noscript {
display:content;
}
</style>
</noscript>
<body>
<noscript>
CONTENT
</noscript>
</body>
</html>
Here the CONTENT within noscript is displayed by default and if
there is javascript the tag is simply dropped; the specification
states the content of noscript should be parsable and that the parsed
result be readily assignable as noscript.outerHTML.
The first method requires one to repeat ones CONTENT in both the
noscript and wrapped into the javascript that populates the div;
this isn't especially DRY. I can't see that populating a page through
javascript calls is any faster then assigning ELEMENT.outerHTML; if
this is not true let me know. The second method relies upona bit of
CSS trickery. Finally both methods seem subject to flicker.
The only reasons I can think of for not using the latter structure are
:
SEO; I can't see how though e.g. you only have to scan CONTENT once, it sn't repeated, it isn't bundled between javascript, better
aria/a11y support.
Frontend framework e.g. they all rely on the first structure
historic reasons e.g. setting noscript.outerHTML breaks events or something ut they are broken under the spec anyhow, jQuery.unwrap
being a "recent" development, browser woes.

Related

Permanently delete DIV from code content by ID on the frontend

I have on my site, a page with several DIV's with some content (let's say that each one is a TO DO task).
I need to view that page URL and choose which DIV I want to delete permanently (in a way that even if I refresh the page, it won't be there anymore).
Is this possible?
I have this code, but the "deleted" DIV re-apear as soon I refresh the page...
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function () {
$("#removeDIVid1").click(function () {
$("#id1").remove();
});
$("#removeDIVid2").click(function () {
$("#id2").remove();
});
$("#removeDIVid3").click(function () {
$("#id3").remove();
});
});
</script>
</head>
<body>
<div id="id1"><p>paragraph 1 <button id="removeDIVid1">Remove DIVid1</button></p></div>
<div id="id2"><p>paragraph 2 <button id="removeDIVid2">Remove DIVid2</button></p></div>
<div id="id3"><p>paragraph 3 <button id="removeDIVid3">Remove DIVid3</button></p></div>
</body>
</html>
The remove method just takes the object out of the DOM, and when you refresh the page, since the DOM tree is generated again, with your div elements. I think generating these tasks dynamically using jQuery will solve your problem. Let me know if you need help with the code.

I want to style inputs inside a div with html

edit: I can only access to the html of the div with the id
I want to do something similar to this but i can't access to css file due to my companies setup. I need to do this from HTML without css
<html>
<head>
<style>
#fileView_ctl01_D_STRT input {
background-color: yellow;
}
</style>
</head>
<body>
<div id = "fileView_ctl01_D_STRT" class="intro">
<div>
<div>
<input>
</div>
</div>
</div>
</body>
</html>
"I need to do this from HTML without css"
I'm assuming for some reason you cannot use style blocks <style></style> in your html, e.g. in some email contexts.
You can overcome this by using inline style style="background-color:yellow;"
<body>
<div id = "fileView_ctl01_D_STRT" class="intro">
<div>
<div>
<input style="background-color:yellow;">
</div>
</div>
</div>
</body>
</html>
Edit based on Javascript
"thanks but I can only edit the html of the div with the id"
So this is the javascript that you can insert into the html code.
let input = document.querySelector("#fileView_ctl01_D_STRT input");
input.style.backgroundColor = "yellow";
<html>
<head>
</head>
<body>
<div id = "fileView_ctl01_D_STRT" class="intro">
<div>
<div>
<input>
</div>
</div>
</div>
</body>
</html>
If you are inserting into the html text directly, you need to put them within the <script></script> block before adding them at the bottom of the html just before </body>:
...
<script>
let input = document.querySelector("#fileView_ctl01_D_STRT input");
input.style.backgroundColor = "yellow";
</script>
</body>
There are a few different ways you can handle this, but it kind of depends on what you mean by saying you can't use CSS. The HTML is pretty much always styled with CSS. But you can add CSS a few different ways.
Inline style: This is what I suspect you might need. Place a style attribute in the div and provide it with the appropriate directions. Example:
<div id = "fileView_ctl01_D_STRT" style="background-color: yellow;">
An internal stylesheet: As you've demonstrated above, you can embed an internal stylesheet.
<style>
#fileView_ctl01_D_STRT input {
background-color: yellow;
}
</style>
Javascript: Finally, you can control styles with Javascript. You have to grab the element you want to style, for example, with the id you've assigned, and apply a style to it. Just as chatnoir has demonstrated:
<script>
let input = document.querySelector("#fileView_ctl01_D_STRT input");
input.style.backgroundColor = "yellow";
</script>
This code can be in a separate, external file that you call to in the HTML via the "src" attribute.
Without CSS, you're pretty much limited to this stuff: https://stackoverflow.com/a/21951731/7055314.

Is there a way to link html sections to an html file? [duplicate]

I have 2 HTML files, suppose a.html and b.html. In a.html I want to include b.html.
In JSF I can do it like that:
<ui:include src="b.xhtml" />
It means that inside a.xhtml file, I can include b.xhtml.
How can we do it in *.html file?
In my opinion the best solution uses jQuery:
a.html:
<html>
<head>
<script src="jquery.js"></script>
<script>
$(function(){
$("#includedContent").load("b.html");
});
</script>
</head>
<body>
<div id="includedContent"></div>
</body>
</html>
b.html:
<p>This is my include file</p>
This method is a simple and clean solution to my problem.
The jQuery .load() documentation is here.
Expanding lolo's answer, here is a little more automation if you have to include a lot of files. Use this JS code:
$(function () {
var includes = $('[data-include]')
$.each(includes, function () {
var file = 'views/' + $(this).data('include') + '.html'
$(this).load(file)
})
})
And then to include something in the html:
<div data-include="header"></div>
<div data-include="footer"></div>
Which would include the file views/header.html and views/footer.html.
My solution is similar to the one of lolo above. However, I insert the HTML code via JavaScript's document.write instead of using jQuery:
a.html:
<html>
<body>
<h1>Put your HTML content before insertion of b.js.</h1>
...
<script src="b.js"></script>
...
<p>And whatever content you want afterwards.</p>
</body>
</html>
b.js:
document.write('\
\
<h1>Add your HTML code here</h1>\
\
<p>Notice however, that you have to escape LF's with a '\', just like\
demonstrated in this code listing.\
</p>\
\
');
The reason for me against using jQuery is that jQuery.js is ~90kb in size, and I want to keep the amount of data to load as small as possible.
In order to get the properly escaped JavaScript file without much work, you can use the following sed command:
sed 's/\\/\\\\/g;s/^.*$/&\\/g;s/'\''/\\'\''/g' b.html > escapedB.html
Or just use the following handy bash script published as a Gist on Github, that automates all necessary work, converting b.html to b.js:
https://gist.github.com/Tafkadasoh/334881e18cbb7fc2a5c033bfa03f6ee6
Credits to Greg Minshall for the improved sed command that also escapes back slashes and single quotes, which my original sed command did not consider.
Alternatively for browsers that support template literals the following also works:
b.js:
document.write(`
<h1>Add your HTML code here</h1>
<p>Notice, you do not have to escape LF's with a '\',
like demonstrated in the above code listing.
</p>
`);
Checkout HTML5 imports via Html5rocks tutorial
and at polymer-project
For example:
<head>
<link rel="import" href="/path/to/imports/stuff.html">
</head>
Shameless plug of a library that I wrote the solve this.
https://github.com/LexmarkWeb/csi.js
<div data-include="/path/to/include.html"></div>
The above will take the contents of /path/to/include.html and replace the div with it.
No need for scripts. No need to do any fancy stuff server-side (tho that would probably be a better option)
<iframe src="/path/to/file.html" seamless></iframe>
Since old browsers don't support seamless, you should add some css to fix it:
iframe[seamless] {
border: none;
}
Keep in mind that for browsers that don't support seamless, if you click a link in the iframe it will make the frame go to that url, not the whole window. A way to get around that is to have all links have target="_parent", tho the browser support is "good enough".
A simple server side include directive to include another file found in the same folder looks like this:
<!--#include virtual="a.html" -->
Also you can try:
<!--#include file="a.html" -->
A very old solution I did met my needs back then, but here's how to do it standards-compliant code:
<!--[if IE]>
<object classid="clsid:25336920-03F9-11CF-8FD0-00AA00686F13" data="some.html">
<p>backup content</p>
</object>
<![endif]-->
<!--[if !IE]> <-->
<object type="text/html" data="some.html">
<p>backup content</p>
</object>
<!--> <![endif]-->
Following works if html content from some file needs to be included:
For instance, the following line will include the contents of piece_to_include.html at the location where the OBJECT definition occurs.
...text before...
<OBJECT data="file_to_include.html">
Warning: file_to_include.html could not be included.
</OBJECT>
...text after...
Reference: http://www.w3.org/TR/WD-html40-970708/struct/includes.html#h-7.7.4
Here is my inline solution:
(() => {
const includes = document.getElementsByTagName('include');
[].forEach.call(includes, i => {
let filePath = i.getAttribute('src');
fetch(filePath).then(file => {
file.text().then(content => {
i.insertAdjacentHTML('afterend', content);
i.remove();
});
});
});
})();
<p>FOO</p>
<include src="a.html">Loading...</include>
<p>BAR</p>
<include src="b.html">Loading...</include>
<p>TEE</p>
In w3.js include works like this:
<body>
<div w3-include-HTML="h1.html"></div>
<div w3-include-HTML="content.html"></div>
<script>w3.includeHTML();</script>
</body>
For proper description look into this: https://www.w3schools.com/howto/howto_html_include.asp
As an alternative, if you have access to the .htaccess file on your server, you can add a simple directive that will allow php to be interpreted on files ending in .html extension.
RemoveHandler .html
AddType application/x-httpd-php .php .html
Now you can use a simple php script to include other files such as:
<?php include('b.html'); ?>
This is what helped me. For adding a block of html code from b.html to a.html, this should go into the head tag of a.html:
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
Then in the body tag, a container is made with an unique id and a javascript block to load the b.html into the container, as follows:
<div id="b-placeholder">
</div>
<script>
$(function(){
$("#b-placeholder").load("b.html");
});
</script>
I know this is a very old post, so some methods were not available back then.
But here is my very simple take on it (based on Lolo's answer).
It relies on the HTML5 data-* attributes and therefore is very generic in that is uses jQuery's for-each function to get every .class matching "load-html" and uses its respective 'data-source' attribute to load the content:
<div class="container-fluid">
<div class="load-html" id="NavigationMenu" data-source="header.html"></div>
<div class="load-html" id="MainBody" data-source="body.html"></div>
<div class="load-html" id="Footer" data-source="footer.html"></div>
</div>
<script src="js/jquery.min.js"></script>
<script>
$(function () {
$(".load-html").each(function () {
$(this).load(this.dataset.source);
});
});
</script>
Most of the solutions works but they have issue with jquery:
The issue is following code $(document).ready(function () { alert($("#includedContent").text()); } alerts nothing instead of alerting included content.
I write the below code, in my solution you can access to included content in $(document).ready function:
(The key is loading included content synchronously).
index.htm:
<html>
<head>
<script src="jquery.js"></script>
<script>
(function ($) {
$.include = function (url) {
$.ajax({
url: url,
async: false,
success: function (result) {
document.write(result);
}
});
};
}(jQuery));
</script>
<script>
$(document).ready(function () {
alert($("#test").text());
});
</script>
</head>
<body>
<script>$.include("include.inc");</script>
</body>
</html>
include.inc:
<div id="test">
There is no issue between this solution and jquery.
</div>
jquery include plugin on github
You can use a polyfill of HTML Imports (https://www.html5rocks.com/en/tutorials/webcomponents/imports/), or that simplified solution
https://github.com/dsheiko/html-import
For example, on the page you import HTML block like that:
<link rel="html-import" href="./some-path/block.html" >
The block may have imports of its own:
<link rel="html-import" href="./some-other-path/other-block.html" >
The importer replaces the directive with the loaded HTML pretty much like SSI
These directives will be served automatically as soon as you load this small JavaScript:
<script async src="./src/html-import.js"></script>
It will process the imports when DOM is ready automatically. Besides, it exposes an API that you can use to run manually, to get logs and so on. Enjoy :)
Here's my approach using Fetch API and async function
<div class="js-component" data-name="header" data-ext="html"></div>
<div class="js-component" data-name="footer" data-ext="html"></div>
<script>
const components = document.querySelectorAll('.js-component')
const loadComponent = async c => {
const { name, ext } = c.dataset
const response = await fetch(`${name}.${ext}`)
const html = await response.text()
c.innerHTML = html
}
[...components].forEach(loadComponent)
</script>
To insert contents of the named file:
<!--#include virtual="filename.htm"-->
Another approach using Fetch API with Promise
<html>
<body>
<div class="root" data-content="partial.html">
<script>
const root = document.querySelector('.root')
const link = root.dataset.content;
fetch(link)
.then(function (response) {
return response.text();
})
.then(function (html) {
root.innerHTML = html;
});
</script>
</body>
</html>
Did you try a iFrame injection?
It injects the iFrame in the document and deletes itself (it is supposed to be then in the HTML DOM)
<iframe src="header.html" onload="this.before((this.contentDocument.body||this.contentDocument).children[0]);this.remove()"></iframe>
Regards
The Athari´s answer (the first!) was too much conclusive! Very Good!
But if you would like to pass the name of the page to be included as URL parameter, this post has a very nice solution to be used combined with:
http://www.jquerybyexample.net/2012/06/get-url-parameters-using-jquery.html
So it becomes something like this:
Your URL:
www.yoursite.com/a.html?p=b.html
The a.html code now becomes:
<html>
<head>
<script src="jquery.js"></script>
<script>
function GetURLParameter(sParam)
{
var sPageURL = window.location.search.substring(1);
var sURLVariables = sPageURL.split('&');
for (var i = 0; i < sURLVariables.length; i++)
{
var sParameterName = sURLVariables[i].split('=');
if (sParameterName[0] == sParam)
{
return sParameterName[1];
}
}
}​
$(function(){
var pinc = GetURLParameter('p');
$("#includedContent").load(pinc);
});
</script>
</head>
<body>
<div id="includedContent"></div>
</body>
</html>
It worked very well for me!
I hope have helped :)
html5rocks.com has a very good tutorial on this stuff, and this might be a little late, but I myself didn't know this existed. w3schools also has a way to do this using their new library called w3.js. The thing is, this requires the use of a web server and and HTTPRequest object. You can't actually load these locally and test them on your machine. What you can do though, is use polyfills provided on the html5rocks link at the top, or follow their tutorial. With a little JS magic, you can do something like this:
var link = document.createElement('link');
if('import' in link){
//Run import code
link.setAttribute('rel','import');
link.setAttribute('href',importPath);
document.getElementsByTagName('head')[0].appendChild(link);
//Create a phantom element to append the import document text to
link = document.querySelector('link[rel="import"]');
var docText = document.createElement('div');
docText.innerHTML = link.import;
element.appendChild(docText.cloneNode(true));
} else {
//Imports aren't supported, so call polyfill
importPolyfill(importPath);
}
This will make the link (Can change to be the wanted link element if already set), set the import (unless you already have it), and then append it. It will then from there take that and parse the file in HTML, and then append it to the desired element under a div. This can all be changed to fit your needs from the appending element to the link you are using. I hope this helped, it may irrelevant now if newer, faster ways have come out without using libraries and frameworks such as jQuery or W3.js.
UPDATE: This will throw an error saying that the local import has been blocked by CORS policy. Might need access to the deep web to be able to use this because of the properties of the deep web. (Meaning no practical use)
Use includeHTML (smallest js-lib: ~150 lines)
Loading HTML parts via HTML tag (pure js)
Supported load: async/sync, any deep recursive includes
Supported protocols: http://, https://, file:///
Supported browsers: IE 9+, FF, Chrome (and may be other)
USAGE:
1.Insert includeHTML into head section (or before body close tag) in HTML file:
<script src="js/includeHTML.js"></script>
2.Anywhere use includeHTML as HTML tag:
<div data-src="header.html"></div>
There is no direct HTML solution for the task for now. Even HTML Imports (which is permanently in draft) will not do the thing, because Import != Include and some JS magic will be required anyway.
I recently wrote a VanillaJS script that is just for inclusion HTML into HTML, without any complications.
Just place in your a.html
<link data-wi-src="b.html" />
<!-- ... and somewhere below is ref to the script ... -->
<script src="wm-html-include.js"> </script>
It is open-source and may give an idea (I hope)
You can do that with JavaScript's library jQuery like this:
HTML:
<div class="banner" title="banner.html"></div>
JS:
$(".banner").each(function(){
var inc=$(this);
$.get(inc.attr("title"), function(data){
inc.replaceWith(data);
});
});
Please note that banner.html should be located under the same domain your other pages are in otherwise your webpages will refuse the banner.html file due to Cross-Origin Resource Sharing policies.
Also, please note that if you load your content with JavaScript, Google will not be able to index it so it's not exactly a good method for SEO reasons.
Web Components
I create following web-component similar to JSF
<ui-include src="b.xhtml"><ui-include>
You can use it as regular html tag inside your pages (after including snippet js code)
customElements.define('ui-include', class extends HTMLElement {
async connectedCallback() {
let src = this.getAttribute('src');
this.innerHTML = await (await fetch(src)).text();;
}
})
ui-include { margin: 20px } /* example CSS */
<ui-include src="https://cors-anywhere.herokuapp.com/https://example.com/index.html"></ui-include>
<div>My page data... - in this snippet styles overlaps...</div>
<ui-include src="https://cors-anywhere.herokuapp.com/https://www.w3.org/index.html"></ui-include>
None of these solutions suit my needs. I was looking for something more PHP-like. This solution is quite easy and efficient, in my opinion.
include.js ->
void function(script) {
const { searchParams } = new URL(script.src);
fetch(searchParams.get('src')).then(r => r.text()).then(content => {
script.outerHTML = content;
});
}(document.currentScript);
index.html ->
<script src="/include.js?src=/header.html">
<main>
Hello World!
</main>
<script src="/include.js?src=/footer.html">
Simple tweaks can be made to create include_once, require, and require_once, which may all be useful depending on what you're doing. Here's a brief example of what that might look like.
include_once ->
var includedCache = includedCache || new Set();
void function(script) {
const { searchParams } = new URL(script.src);
const filePath = searchParams.get('src');
if (!includedCache.has(filePath)) {
fetch(filePath).then(r => r.text()).then(content => {
includedCache.add(filePath);
script.outerHTML = content;
});
}
}(document.currentScript);
Hope it helps!
Here is a great article, You can implement common library and just use below code to import any HTML files in one line.
<head>
<link rel="import" href="warnings.html">
</head>
You can also try Google Polymer
To get Solution working you need to include the file csi.min.js, which you can locate here.
As per the example shown on GitHub, to use this library you must include the file csi.js in your page header, then you need to add the data-include attribute with its value set to the file you want to include, on the container element.
Hide Copy Code
<html>
<head>
<script src="csi.js"></script>
</head>
<body>
<div data-include="Test.html"></div>
</body>
</html>
... hope it helps.
There are several types of answers here, but I never found the oldest tool in the use here:
"And all the other answers didn't work for me."
<html>
<head>
<title>pagetitle</title>
</head>
<frameset rows="*" framespacing="0" border="0" frameborder="no" frameborder="0">
<frame name="includeName" src="yourfileinclude.html" marginwidth="0" marginheight="0" scrolling="no" frameborder="0">
</frameset>
</html>

Trying to get import to work

Inspired by this html5rocks post, I thought I'd try link rel="import".
In the console, I get:
yay!
Loaded import: http://www.example.com/HelloWorld.htm
But I don't get "Hello World!" on the page.
Here's my code:
<!DOCTYPE html>
<html>
<body>
<script>
function supportsImports() {
return 'import' in document.createElement('link');
}
if (supportsImports()) {
console.log('yay!')
} else {
console.log('boo!')
}
function handleLoad(e) {
console.log('Loaded import: ' + e.target.href);
}
function handleError(e) {
console.log('Error loading import: ' + e.target.href);
}
</script>
<link rel="import" href="HelloWorld.htm" onload="handleLoad(event)" onerror="handleError(event)">
</body>
</html>
And HelloWorld.htm contains:
<h1>Hello World!</h1>
Edit:
In the console, I can see that <h1>Hello World!</h1> is inside the link tag as another #document, complete with <html><head></head></body>.
According to the same HTML5Rocks post, when you import an HTML resource, it is accessible as a JavaScript object. Specifically, a Document:
var myImport = document.querySelector('link[rel="import"]').import;
document.querySelector(/* get the element we want here */).appendChild(myImport.body);
That does contradict somewhat with the beginning of the article, which balks at using JavaScript to load HTML, but at least it uses much less JavaScript (the kind that can, perhaps, fit in a browser tag) and certainly is not subject to the CORS restrictions that AJAX has to deal with.

Polymer preload spinner

Sometimes it takes a while for polymer to load, and when using <body unresolved>, the page stays blank until everything is ready. Is there a way to display something between the time that the page is served and the time that polymer is done doing its magic?
The documentation that describes the unresolved attribute clears some of this up.
While it's common to apply unresolved to the <body> element, causing the entirety of your page's content to be hidden until Polymer is ready, it can be applied to any element(s). You can, for instance, use <div unresolved> as a wrapper around the portion of your page that relies on Polymer, and create a loading message that's outside that wrapper which will be visible immediately. (You'd then want to listen to the polymer-ready event and hide your loading message when that's fired.)
Here's an example using a very contrived way of slowing down the time it takes for the Polymer element to complete one of its lifecycle methods (live demo):
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Polymer Demo</title>
<style>
.hidden {
display: none;
}
</style>
</head>
<body>
<p id="spinner">Loading...</p>
<script src="http://www.polymer-project.org/platform.js"></script>
<link rel="import" href="http://www.polymer-project.org/components/polymer/polymer.html">
<polymer-element name="slow-poke">
<template>
<h1><content></content></h1>
</template>
<script>
Polymer({
// Used to introduce a delay in initializing the Polymer element.
// Don't try this at home!
created: function() {
var start = Date.now();
while (true) {
if (Date.now() - start > 1000) {
break;
}
}
}
});
</script>
</polymer-element>
<div unresolved>
<slow-poke>Here I am... finally!</slow-poke>
<slow-poke>Me too!</slow-poke>
</div>
<script>
window.addEventListener('polymer-ready', function() {
document.querySelector('#spinner').classList.add('hidden');
});
</script>
</body>
</html>
(By the way, what are you finding to be slow-loading? If it's a standard/core element, it might be worth filing a bug against the corresponding project on GitHub.)