How can I use the aria-attribute aria-labelledby for combo box (input+autocomplete list) correctly?
According to the W3C, the aria-labelledby property provides the user with a recognizable name of the object.
I've found the following example on W3C:
<div class="combobox-wrapper">
<div>
<input type="text"
aria-labelledby="ex1-label">
</div>
<ul aria-labelledby="ex1-label"></ul>
</div>
But I've noticed that aria-labelledby isn't descriptive. Values in aria-labelledby for different element are used the same.
Maybe I can use aria-labelledby like this:
<div class="combobox-wrapper">
<div>
<input type="text"
aria-labelledby="textBox">
</div>
<ul aria-labelledby="autocomplete-list"></ul>
</div>
The WAI ARIA attribute aria-labelledby is used when you can't use the normal <input> + <label> combination to label a form element, e.g. because you are using a custom form element. In other words, it is used in situations where you can't use the <label>'s for attribute to define a label for the input (e.g.
<input id="communitymode" name="communitymode" type="checkbox"> <label for="communitymode">communiti wiki</label>; note that the for attribute's value refers to the input's id attribute.)
With aria-labelledby, your reference works in the opposite direction as the for attibute: you tell the browser or the screen reader where to find the "label" for the form control it has just encountered.
<div class="combobox-wrapper">
<div>
<span id="combolabel">Select your country:</span>
<input type="text"
aria-labelledby="combolabel">
</div>
<ul aria-labelledby="combolabel"></ul>
</div>
In the above code sample, both the <input> element and the <ul> element are labelled by the <span> element with id "combolabel".
Remember the first rule of ARIA is don't use ARIA when native HTML elements exist. If you are trying to create an accessible autocomplete box try this:
http://wet-boew.github.io/v4.0-ci/demos/datalist/datalist-en.html
It does not use ARIA and follows all applicable W3C rules and guidelines.
Related
I have a HTML like this :
<ol class="list">
<li class="list-item " id="37647629">
<!---->
<div>
<!---->
<div>
<!---->
<book class="book">
<div class="title">
someText
</div>
<div class="year">
2022
</div>
</book>
</div>
<!---->
</div>
<!---->
</li>
<li class="list-item " id="37647778">
<!---->
<div>
<!---->
<div>
<!---->
<book class="book">
<div class="title">
someOtherText
</div>
<div class="year">
2014
</div>
</book>
</div>
</div>
<!---->
</li>
</ol>
I want to get the first book title and year, directly with two xPath expression.
I tried :
$x('//book') => Ok, get the two books list
$x('//book[0]') => Empty list
$x('//book[0]/div[#class="title"]') => Nothing
Seems I have to do this :
$x('//book')[0]
and then process title, but why I can't do this just with Xpath and directly access the first title with a Xpath expression ?
This will give you the first book title
"(//book)[1]//div[#class='title']"
And this gives the first book year
"(//book)[1]//div[#class='year']"
You're missing that XPath indexing starts at 1; JavaScript indexing starts at 0.
$x('//book') selects all book elements in the document.
$x('//book[0]') selects nothing because XPath indexing starts at 1. (It also signifies to select all book elements that are the first among siblings — not necessarily the same as the first of all book elements in the document.)
$x('//book')[0] would select the first book element because JavaScript indexing starts at 0.
$x('(//book)[1]') would select the first book element because XPath indexing starts at 1.
To select the first div with class of 'title', all in XPath:
$x('(//div[#class="title"])[1]')
or, using JavaScript to index:
$x('(//div[#class="title"])')[0]
To return just the string value without the leading/trailing whitespace, wrap in normalize-space():
$x('normalize-space((//div[#class="title"])[1])')
Note that normalize-space() will also consolidate internal whitespace, but that is of no consequence with this example.
See also
How to select first element via XPath? (And be sure not to miss the explanation of the difference between //book[1] and (//book)[1] — they are not the same.)
Using a simple request I'm trying to get from this html page some information stored in "alt". The problem is that, within each instance, the information is separated in multiple lines that start with "img", and when I try to access it, I can only read the first instance of "img" and not the rest, but I'm not sure how to do it. Here's the HTML text:
<div class="archetype-tile-description-wrapper">
<div class="archetype-tile-description">
<h2>
<span class="deck-price-online">
Golgari Midrange
</span>
<span class="deck-price-paper">
Golgari Midrange
</span>
</h2>
<div class="manacost-container">
<span class="manacost">
<img alt="b" class="common-manaCost-manaSymbol sprite-mana_symbols_b" src="//assets1.mtggoldfish.com/assets/s-d69cbc552cfe8de4931deb191dd349a881ff4448ed3251571e0bacd0257519b1.gif" />
<img alt="g" class="common-manaCost-manaSymbol sprite-mana_symbols_g" src="//assets1.mtggoldfish.com/assets/s-d69cbc552cfe8de4931deb191dd349a881ff4448ed3251571e0bacd0257519b1.gif" />
</span>
</div>
<ul>
<li>Jadelight Ranger</li>
<li>Merfolk Branchwalker</li>
<li>Vraska's Contempt</li>
</ul>
</div>
</div>
Having said that, what I'm looking to get from this is both "b" and "g" and store them in a single variable.
You can probably grab those <img> elements with the class "common-manaCost-manaSymbol" like this:
imgs = soup.find_all("img",{"class":"common-manaCost-manaSymbol"})
and then you can iterate over each <img> and grab the alt property of it.
alts = []
for i in imgs:
alts.append(i['alt'])
or with a list comprehension
alts = [i['alt'] for i in imgs]
I have a form that spans multiple tabs in a TabStrip control. However, when the form is validated (e.g. f.valid), not all controls are considered when the validation is evaluated.
For example, if an input field is on tab 1 that is marked as "required" and the save action is called when the focus is on tab #3, the form will read as invalid since the required field is not in view. If the focus is on Tab #1, all works as expected.
I understand why this behavior is occurring, but I wanted to see if there was any suggested workaround.
Thanks!
Update
I created a plunkr that shows the basic issue. It is actually a little backwards from the problem I described, but it shows how the form ignores the fields on tabs other than the one displayed during validation: Plunkr Example
The template code looks like this:
<form #f="ngForm" (ngSubmit)="save(f)">
<kendo-tabstrip>
<kendo-tabstrip-tab [title]="'Paris'" [selected]="true">
<ng-template kendoTabContent>
<input type="text" name="controlOne" id="controlOne" [(ngModel)]="myModel.controlOne" required>
</ng-template>
</kendo-tabstrip-tab>
<kendo-tabstrip-tab [title]="'New York City'">
<ng-template kendoTabContent>
<input type="text" name="controlTwo" id="controlTwo" [(ngModel)]="myModel.controlTwo">
</ng-template>
</kendo-tabstrip-tab>
<kendo-tabstrip-tab [title]="'Tallinn'">
<ng-template kendoTabContent>
<input type="text" name="controlThree" id="controlThree" [(ngModel)]="myModel.controlThree">
</ng-template>
</kendo-tabstrip-tab>
</kendo-tabstrip>
<button type="submit">Save changes</button>
</form>
<div>
Valid when saving: {{ isValid }}
</div>
I'm faced with a span element for text input instead of an input box, and I'm struggling to use Watir (Ruby) to enter text. There's no set method, there is a text method that returns the text fine, but I don't seem to be able to set the text that way.
I've also tried using span.select and span.focus and then browser.send_keys but nothing is input in the field.
<div class="UFIAddCommentInput _1osb _5yk1">
<div class="_5yk2" tabindex="-2">
<div class="_5rp7">
<div class="_1p1t">
<div class="_1p1v">
Write a reply...
</div>
</div>
<div class="_5rpb">
<div aria-autocomplete="list" aria-expanded="false" aria-haspopup="false" aria-owns="js_3i" class="_5rpu" contenteditable="true" data-testid="ufi_reply_composer" role="combobox" spellcheck="true" title="Write a reply..." id="js_3j">
<div data-contents="true">
<div data-block="true" data-offset-key="8c176-0-0" class="_45m_ _2vxa">
<span data-offset-key="8c176-0-0">
<br data-text="true">
</br>
</span>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
What could I try next? Is there a way to stop front end designers using non-standard elements?
You can use javascript to do this. The difficulty for me was to handle the nested quotes.
Two pieces of knowledge I had to figure out first before being able to do this w/ regards to nested strings:
a.) regarding how javascript handles nested quotes: http://www.w3schools.com/js/js_strings.asp
b.) on how to deal with nested quotes in ruby: Escaping single and double qoutes from a string in ruby (the %Q operator lets you set whatever you want to begin and end a string)
css_selector = "span[data-offset-key='8c176-0-0']"
b.execute_script(%Q|query="#{css_selector}"|)
b.execute_script("document.querySelector(query).innerHTML='that was tricky'")
Looks like the ability to inject JavaScript using procedures such as this enables you to be able to do just about anything Watir can't do otherwise. Good question, this was a learning experience for me too
I need to generate following html markup in jade
<div class="checkbox">
<label>
<input type="checkbox"> Remember me
</label>
</div>
My try:-
.checkbox
label Remember me
input(type="checkbox")
generates
<div class="checkbox">
<label>
"Remember me
"
<input type="checkbox">
</label>
</div>
How can we place element "checkbox" infront of "Remember me" label text?
Have you tried nesting it like this?
.checkbox
label
input(type="checkbox")
| Remember me