I have the following HTML-code-structure (example):
<p paraclass="M">Some Text</p>
<p paraclass="A1">enum 1</p>
<p paraclass="A1">enum 2</p>
<p paraclass="A2">enum 2.1</p>
<p paraclass="A2">enum 2.2</p>
<p paraclass="A1">enum 3</p>
and want it to be rendered like this:
Some Text
1 enum 1
2 enum 2
2.1 enum 2.1
2.2 enum 2.2
3 enum 3
This works great with CSS-pseudotag like:
p[paraclass="A1"]:before{
content:counter(A1);
counter-increment:A1;
counter-reset: A2;
}
Unfortunatly this doesn't work in IE7. What is a good solution for this to work in IE7 without changing the HTML?For a JS solution I have all the information about the counters I need (like the Id's, what counters they reset and what list-style-type they have). Is there a better/easier way? And if not, how can I use counterstyles like "lower-roman" without implementing them myself? Note: jQuery 1.6.2 can be used.
First of all, your HTML is not valid. The paraclass attribute must be renamed to data-paraclass in case you're developing with HTML 5, or add a namespace if you're developing with XHTML.
Second, the <p> element is not thought to be displayed as a list. Therefore I'd like to encourage you to use the <ol> element, since it is designed especially for this purpose and supported by all browsers.
Related
My webstore uses Kudobuzz for product reviews, but our e-commerce platform (PDG) isn't supported for SEO markup data.
This widget does not support schema markup on it's own, so I want to somehow select the relevant pieces and inject the schema markup to the various divs/spans that make up the widget. One problem is figuring out how to inject code that google can parse, and another is figuring out how to make the actual selectors for this super bloated widget.
Here is a codepin of the widget and some markup data that is already on the site: http://codepen.io/anon/pen/GpddpO
Here is a link to a product page if you want to see how everything works: https://www.asseenontvhot10.com/product/2835/Professional-Leather--Vinyl-Repair-Kit
This is (roughly) the markup I'm trying to add if it helps:
<div itemscope itemtype="http://schema.org/Review">
<div itemprop="reviewBody">Blah Blah it works 5 star</div>
<div itemprop="author" itemscope itemtype="http://schema.org/Person">
Written by: <span itemprop="name">Author</span></div>
<div itemprop="itemReviewed" itemscope itemtype="http://schema.org/Thing">
<span itemprop="name">Stop Snore</span></div>
<div><meta itemprop="datePublished" content="2015-10-07">Date published: 10/07/2015</div>
<div itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating">
<meta itemprop="worstRating" content="1"><span itemprop="ratingValue">5</span> / <span itemprop="bestRating">5</span> stars</div>
</div>
Theoretically you could write a very small amount of microdata using css :before and :after - with content but it would need all spaces and symbols converted into ISO format, eg.
#name:before { "\003cspan\2002itemprop\0022name\2033"}
#name:after { content: "\2044\003cspan003e"
even spaces need to be substitued with \2002 or an equivalent whitespace
code
should wrap this microdata to your HTML to any element called name:
<span itemprop="name">...</span>
Clearly this can only work if the widget lets you have clear ids or class names for the elements added, and it may be useless you know the type of object reviewed first (eg Book, Movie, since this needs to go at the start in the example I gave - which is incomplete). The code would need to be nested correctly so if you want further help can you edit your question with example HTML for a completed review.
Writing your own JSON-LD script at the top of the page is another option - it would be a different question (if you get stuck) but isn't embedded within the data itself
Edit
it's a good idea to test the css in a separate environment first, eg setup a jsfiddle
I am trying to make dynamic code examples for our api that can be constructed from from input html elements.
A paired down example looks like this, I give the user an input to name the device they would like to create.
<input class="observable-input" data-key="deviceName" type="text" value="deviceKey" />
I would then like that input to update code examples (replacing the device name in the example with the one the user inputs).
<code lang="python">
device = { "name": "<span data-observeKey="deviceName">Name</span>" }
client.createDevicewrite(device)
</code>
I have all of the code setup for observing a change in the input and updating the code examples, this works great. All of the syntax highlighters I have looked at, usually chop the snippet up and rerender the example wrapped with its own html (for styling). Is there an option/configurable way to get a syntax highlighter to not strip the these tags, or is there a different approach I should be looking at for preserving the syntax highlighting and still supporting dynamic updates without having to do a full text search of each snippet's rendered tags.
The example output of the pygment (current syntax highlighter I'm using).
<li>
<div class="line">
<span class="n">device</span>
<span class="o">=</span>
<span class="n">{</span>
<span class="s">"name"</span>
<span class="p">:</span>
<span class="s">"Name"</span>
<span class="n">}</span>
</div>
</li>
I decided to just go with a brute force approach, it ended up being decently performant, ill leave my code here if anyone is interested in what I did
https://gist.github.com/selecsosi/5d41dae843b9dea4888f
Since i use backbone, lodash, and jquery as my base app frameworks the gist uses those. I have a manager which will push updates from inputs to spans on the page which I use to dynamically update the code examples
I would like to have an opinion on storing RESTful object IDs in document for accessing it later from JavaScript.
Theoretically speaking using id for addressing elements in HTML doesn't cut it anymore. Same element can be repeated twice on the page say in "Recent" and "Most Popular" queries which breaks the main point of using id.
HAML even has this nice syntax sugar:
%div[object]
becomes:
<div class="object" id="object_1">
But like I said, seems that it is not a good approach. So I am wondering what is the best way to store objects id in DOM?
Is this the current proper approach?
<div data-id="object_1">
An ID is intended to uniquely identify an element, so if you have a case where you want to identify two or more elements by some common identifier, you can use ID but it may not be the best option in your case.
You can use IDs like:
<div id="d0">Original Div</div>
<div id="d0-0">Copy of original div</div>
<div id="d1">Another original Div</div>
<div id="d1-0">Another copy of original div</div>
<div id="d1-1">Another copy of original div</div>
and get all the d1 elements using:
document.querySelectorAll('[id^=d1]');
or just d1 divs:
document.querySelectorAll('div[id^=d1]')
You could also use a class:
<div id="d0" class="d0">Original Div</div>
<div id="..." class="d0">Copy of original div</div>
<div id="d1" class="d1">Another original Div</div>
<div id="..." class="d1">Another copy of original div</div>
<div id="..." class="d1">Another copy of original div</div>
and:
document.querySelectorAll('.d1')
Or use data- attributes the same way. Whatever suits.
You can also have a kind of MVC architecture where an object stores element relationships through references based on ID or whatever. Just think outside the box a bit.
The purpose why data-selectors where introduces is because the users neednt want to use class or anyother attributes to store value.Kindly use data-selectors itself. In order to make it easy to access them use attributes selector i.e. [attribute='value']. PFB the fiddle for the same and also the example
jsfiddle
<!DOCTYPE html>
<html>
<head>
<script src="//code.jquery.com/jquery-git2.js"></script>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body onload="call()">
<div id="1" data-check='1'></div>
<div id="2" data-check='1'>sdf</div>
<div data-check='1'>sdf</div>
<div data-check='1'>sdf</div>
<div data-check='1'>sdf</div>
</body>
</html>
function call()
{
$("#1").html($('[data-check="1"]').length);
$("#2").html( document.querySelectorAll('[data-check="1"]').length);
}
Output: 5 5 sdf sdf sdf
#RobG is right by using 'class' you can get array of elements in JavaScript as-
var divs=document.getElelementsByClassName("className");
\\And you can loop through it(`divs[i]`).
AND according to #RobG and #Barmar data-* attribute is also a good option.
But here is some point(just point, not negative or positive, its totally depends on your application need) I want to discuss:
1] data-* element is HTML5's new attribute. Documentation
2] To retrieve elements in javascript, You need to use jQuery or more bit of JavaScript, coz all direct function available have specific browser support:
Like document.querySelector("CSS selector"); IE8+
document.getElementsByClassName("className"). IE9+
document.querySelectorAll("CSS selector"); etc.
So, basically for this point you need to choose according to your app need and browser compatibility.
3] Performance issue is also there on selecting by data-* attribute... Source
But, generally and if we go for latest application and selecting HTML5, data-* attribute + jQuery is a good option.
I was wondering about this too. Here's my POV using an example component.
CSS - styling across all buttons
Elements should not be referenced in JS using CSS classes because if you have multiple buttons that need to function differently, adding unique CSS classes for each component will get messy.
<div class="my-component">
JS - Grab the component when it can only appear once on a page
While browsers may handle multiple id okay, it would harm maintenance since this would be unexpected behavior from an id.
<div id="my-component">
const myComponent = document.querySelector('#my-component')
JS - Grab the component when it can appear multiple times on a page
ref or data-id could both work. ref has been popularized by React and Vue, so it may be more familiar to developers.
<div ref="my-component">
const myComponents = document.querySelectorAll('[ref="my-component"]')
or
<div data-id="my-component">
const myComponents = document.querySelectorAll('[data-id="my-component"]')
I need to add tick marks below a ui-slider so that it looks somewhat like this:
Automated interpolation with ng-repeat doesn't work:
In my controller I have a limits array
$scope.limits = [ 1, 3, 5, 10, 15 ];
I reference limits in my html:
<p ng-repeat="l in limits"
style="left:{{$index*100/(limits.length-1)}}%"
class="slider-tick">
<span class="slider-tick-mark">|</span>
<br>
{{l}}
</p>
In Chrome this works fine, but not in IE9 - all the tick marks and numbers are bunched up on the left-hand side
Chrome:
IE9:
It's as if the style expression is not working ("left:{{$index*100/(limits.length-1)}}%")
Manual interpolation works:
If I code the repeated elements by hand, then it works as expected in IE9.
<p class="slider-tick" style="left:0%" ><span class="slider-tick-mark">|</span><br/>1</p>
<p class="slider-tick" style="left:25%" ><span class="slider-tick-mark">|</span><br/>3</p>
<p class="slider-tick" style="left:50%" ><span class="slider-tick-mark">|</span><br/>5</p>
<p class="slider-tick" style="left:75%" ><span class="slider-tick-mark">|</span><br/>10</p>
<p class="slider-tick" style="left:100%"><span class="slider-tick-mark">|</span><br/>15</p>
Question:
Is there any way to have the ng-repeat expression work in IE9?
Update:
After using the Developer Tools to inspect the DOM, I see there is no style tag on the <p> element at all.
IE9:
In Chrome's developer tools, that style tag does exist:
Chrome:
Use the ng-style directive instead of the style attribute. The browser is trying to interpret your Angular expression as (invalid) CSS; ng-style will make Angular evaluate the value and then apply it as the style attribute.
<p ng-repeat="l in limits"
ng-style="{left: ($index*100/(limits.length-1)) + '%'}"
class="slider-tick">
<span class="slider-tick-mark">|</span>
<br>
{{l}}
</p>
IE9 struggles with several of the directives requiring the $compile service. There are some steps you can take to try to enable IE9's support through shimming and such. Angular has a section of the developer guide dedicated to IE support of angular:
http://docs.angularjs.org/guide/ie
The most important piece directly related to IE9, is the ng namespace for the html tag:
<!doctype html>
<html xmlns:ng="http://angularjs.org">
I have found, that though the guide says this works, it's not always the case. Sometimes you have to use the data-ng-repeat as opposed to ng-repeat:
<p data-ng-repeat="l in limits"
style="left:{{$index*100/(limits.length-1)}}%"
class="slider-tick">
<span class="slider-tick-mark">|</span>
<br>
{{l}}
</p>
Edit... there was also some issues a while back where using ng-repeat would not transclude and bind elements on the same tag properly (your style declaration). the fix there is to ensure you have the latest version of Angular.
I have a JavaScript string containing HTML like this:
<div>
<div class="a">
content1
</div>
content 2
<div class="a">
<b>content 3</b>
</div>
</div>
and I want to remove the div's of class="a" but leave their content.
In Python I would use something like:
re.compile('<div class="a">(.*?)</div>', re.DOTALL).sub(r'\1', html)
What is the equivalent using Javascript regular expressions?
Why don't you use proper DOM methods? With a little help from jQuery, that's dead simple:
var contents = $('<div><div class="a">content1</div>content 2<div class="a"><b>content 3</b></div></div>');
contents.find('.a').each(function() {
$(this).replaceWith($(this).html());
});
You can achieve it with regular expressions in JavaScript
var html = '<div> <div class="a"> content1 </div> <div class="a"> content1 </div> ... </div>';
var result = html.replace(/<div class="a">(.*?)<\/div>/g, function(a,s){return s;});
alert(result);
RegExp method replace takes two parameters - first one is the actual re and the second one is the replacement. Since there is not one but unknown number of replacements then a function can be used.
If you want to do this in Javascript, I'm presuming that you are running it in a web browser, and that the 'javascript string' that you refer to was extracted from the DOM in some way.
If both of these case are true, then I'd say that it would be a good idea to use a tried and tested javascript library, such as JQuery (There are others out there, but I don't use them, so can't really comment)
JQuery allows you to do on-the-fly DOM manipulations like you describe, with relative ease...
$('div.a').each(function(){$(this).replaceWith($(this).html());});
JQuery is definitely one of those tools that pays dividends - a failry short learning curve and a whole lot of power.