New to Svelte here and playing with the reactivity concept. This first example works, the file input field correctly shows the selected file.
<script>
let files = []
</script>
<input type='file' bind:files />
This second example (only swapped the input attributes) does not. As can be easily tested in the REPL.
<script>
let files = []
</script>
<input bind:files type='file' />
It complains with "Value being assigned to HTMLInputElement.files does not implement interface FileList." and I don't understand why... do the bindings always have to go last in Svelte?
As #RichHarris explains above... this is a bug in Svelte. For now simply add the bindings to the end of the input element until it has been fixed.
See the Github issue for more info.
UPDATE: This has been fixed in November 2019 (see pull request #3849).
Related
I have a (probably) simple issue that I can't solve and need your help to resolve.
I created a new MVC application with Visual Studio 2017. I then created the necessary Model, View, and Controller to add some data to a SQL Server database.
However, in the TEXTAREA input, I am not able to use the Enter Key to go to a new line, like I am able to do here when I submitted this question. The Enter key does nothing.
I tried to trace the issue and was able to use this script to confirm that the Enter key was detected; however, still can't get a new line when I pressed the Enter key.
<script>
$(window).keydown(function (event) {
if ((event.which == 13) && ($(event.target)[0] == $("textarea")[0])) {
alert("One");
// event.preventDefault();
// return false;
}
});
</script>
Second, I added an onclick event to the textarea itself and still did not get a new line when clicked. There must be an override for the textarea in code that I am not able to find, which is probably part of the default app build in .NET VS2017.
<textarea rows="6" cols="20" class="form-control" asp-for="Notes" style="width: 96% !important;" onclick="this.value='Hello \n How R U?'"></textarea>
Is there any way to correct this issue and gain access to the full TEXTAREA functionalities and be able to provide a full text-based area for users to provide detailed comments in multiple lines?
Thank you for your reply.
I wrote following HTML code to face your problem but there was no problem!
<html>
<head>
<title>
test
</title>
</head>
<body>
<textarea rows="6" cols="20" class="form-control" asp-for="Notes" style="width: 96% !important;"
onclick="this.value='Hello \n How R U?'"></textarea>
</body>
</html>
Did you check your application by another browser?
If the problem still remains, In your browser inspect HTML code of your textarea and compare it to the tag helper equivalent of the textarea in your view code. This may help you to figure something out.
I am trying to implement jQuery with PrimeFaces and JSF components, but it's not working properly. When I tried to do the same with HTML tags it;s working properly.
Here is the code with HTML tags which works properly with jQuery:
<input type="checkbox" id="check2"></input>
<h:outputText value="Check the box, if your permanent address is as same as current address."></h:outputText>
<h:message for="checkbox" style="color:red" />
with
$("#check2").change(function() {
if ($("#check2").is(":checked")) {
$("#p2").hide();
} else {
$("#p2").show();
}
});
Here is the code with PrimeFaces/JSF which doesn't work properly with jQuery:
<p:selectManyCheckbox >
<f:selectItem itemLabel="1" value="one" id="rad" ></f:selectItem>
</p:selectManyCheckbox>
with
$("#rad").change(function() {
if ($("#rad:checked").val() == "one") {
$("#p2").hide();
} else {
$("#p2").show();
}
});
You should realize that jQuery works with the HTML DOM tree in the client side. jQuery doesn't work directly on JSF components as you've written in the JSF source code, but jQuery works directly with the HTML DOM tree which is generated by those JSF components. You need to open the page in webbrowser and rightclick and then View Source. You'll see that JSF prepends the ID of the generated HTML input elements with the IDs of all parent NamingContainer components (such as <h:form>, <h:dataTable>, etc) with : as default separator character. So for example
<h:form id="foo">
<p:selectManyCheckbox id="bar" />
...
will end up in generated HTML as
<form id="foo" name="foo">
<input type="checkbox" id="foo:bar" name="foo:bar" />
...
You need to select elements by exactly that ID instead. The : is however a special character in CSS identifiers representing a pseudo selector. To select an element with a : in the ID using CSS selectors in jQuery, you need to either escape it by backslash or to use the [id=...] attribute selector or just use the old getElementById():
var $element1 = $("#foo\\:bar");
// or
var $element2 = $("[id='foo:bar']");
// or
var $element3 = $(document.getElementById("foo:bar"));
If you see an autogenerated j_idXXX part in the ID where XXX represents an incremental number, then you must give the particular component a fixed ID, because the incremental number is dynamic and is subject to changes depending on component's physical position in the tree.
As an alternative, you can also just use a class name:
<x:someInputComponent styleClass="someClassName" />
which ends up in HTML as
<input type="..." class="someClassName" />
so that you can get it as
var $elements = $(".someClassName");
This allows for better abstraction and reusability. Surely those kind of elements are not unique. Only the main layout elements like header, menu, content and footer are really unique, but they are in turn usually not in a NamingContainer already.
As again another alternative, you could just pass the HTML DOM element itself into the function:
<x:someComponent onclick="someFunction(this)" />
function someFunction(element) {
var $element = $(element);
// ...
}
See also:
How can I know the id of a JSF component so I can use in Javascript
How to use JSF generated HTML element ID with colon ":" in CSS selectors?
By default, JSF generates unusable IDs, which are incompatible with the CSS part of web standards
Integrate JavaScript in JSF composite component, the clean way
You also can use the jQuery "Attribute Contains Selector" (here is the url http://api.jquery.com/attribute-contains-selector/)
For example If you have a
<p:spinner id="quantity" value="#{toBuyBean.quantityToAdd}" min="0"/>
and you want to do something on its object you can select it with
jQuery('input[id*="quantity"]')
and if you want to print its value you can do this
alert(jQuery('input[id*="quantity"]').val());
In order to know the real html tag of the element you can always look at the real html element (in this case spinner was translated into input) using firebug or ie developer tools or view source...
Daniel.
If you're using RichFaces you can check rich:jQuery comonent. It allows you to specify server side id for jQuery component. For example, you have component with specified server id, then you can apply any jQuery related stuff to in next way:
<rich:jQuery selector="#<server-side-component-id>" query="find('.some-child').removeProp('style')"/>
For more info, please check doumentation.
Hope it helps.
look this will help you when i select experience=Yes my dialoguebox which id is dlg3 is popup.and if value is No it will not open
i using simple_html_dom.php
how to get textarea value if the website has used bad tag.
the textarea tag already closed before </textarea> like input tag.
Textarea HTML like below:
<textarea name="xxx" id="xxx" />this is value</textarea>
When i use this function, i dont get anything
$textarea = $html->find("textarea[name=xxx]");
$contents = $textarea->innertext;
echo $contents;
how to get 'this is value' using simple_html_dom.php or other alternative?
Thank you
Well, my previous comment won't work in this case, I'll leave it for info though...
Another approach is to clean it up before parsing it with simple_html_dom using Tidy extension. But it seems not to be working here either...
A last approach I can think of, and if this is your only problematic case, is to use regex to get what you want:
Using <textarea.*?name="xxx".*?id="xxx".*?\/>([^<]+)<\/textarea> ==> RegEx DEMO
The output will be in group one of the resulting array $match. Check this working code:
$input = <<<_DATA_
<textarea name="xxx" id="xxx" />this is value</textarea>
_DATA_;
$pattern = '/<textarea.*?name="xxx".*?id="xxx".*?\/>([^<]+)<\/textarea>/';
preg_match($pattern, $input, $match);
var_dump($match)
Working DEMO
It is easy to get the value of a Teaxtarea in javascript:
<script type=text/javascript>
function getValueTextarea()
{
var vl=document.getElementById("tx").value;
alert(vl);
}
</script>
<body>
<textarea id="tx">Value Of Textarea</textarea>
<input id="button" value="Get Value" onclick="getValueTextarea()">
</body>
I currently have a link in the below form:
Change
In order to fit the look of the site in which I'm adding this link, I want to change it to a button input, as so:
<input type="button" value="Change" onclick="changeNumbers('Numbers', '#Url.Action("ChangeNumbers")')" />
However, I'm running into a snag with this second form: the single quotes around #Url.Action("ChangeNumbers") are being flagged as Unterminated string constant. Can anyone tell me what I'm doing incorrectly and how to fix it?
EDIT
It didn't occur to me to just try the page - it looks like the second form works. So now my question is - why is Visual Studio flagging this as incorrect?
You're not doing anything "incorrectly" per se, it's just that Razor isn't perfect, and things like quotes within quotes tend to cause it to freak.
One quick fix would be to store the URL in a variable and then use the variable:
#{ var url = Url.Action("ChangeNumbers"); }
<input type="button" value="Change" onclick="changeNumbers('Numbers', '#url')" />
However, an even better fix is to not use the onclick attribute at all. Put this where it belongs: in JS.
<script>
$('#myButton').on('click', function () {
changeNumbers('Numbers', '#Url.Action("ChangeNumbers")');
});
</script>
Used jQuery above, since it's included in MVC by default
I've found that to make Visual Studio happy in this scenario, the easiest thing to do is simply change the <input /> element to a <button></button> element and the error will resolve itself:
<button type="button" onclick="changeNumbers('Numbers', '#Url.Action("ChangeNumbers")')">Change</button>
Otherwise, to continue using an <input /> the markup will need to be changed to the following:
<input type="button" value="Change" onclick="#("changeNumbers('Numbers', '" + Url.Action("ChangeNumbers") + "')")" />
I've been looking every where, and the tutorial doesn't seem to work when I use it. I saw something like getfullmonth, getfullyears etc. ... anyway, I'm using this code:
My js:
<script>
YAHOO.namespace("example.calendar");
YAHOO.example.calendar.init = function() {
YAHOO.example.calendar.cal1 = new YAHOO.widget.CalendarGroup("cal1","cal1Container", {PAGES:1});
YAHOO.example.calendar.cal1.render();
}
YAHOO.util.Event.onDOMReady(YAHOO.example.calendar.init);
</script>
And this is my HTML:
<input type="text" value="I WANT TO PUT THE SELECTED DATE HERE" id="datechoix" class="n-input2" name="datechoix" readonly="readonly" />
<div id="cal1Container" style="margin-top:15px;"></div>
Anyone got a good tutorial or a complete answer maybe?
You have to listen to the select-date-event. It fires if a user selects a date and holds the date information as arguments.
See this example:
http://yui.github.io/yui2/docs/yui_2.9.0_full/examples/button/btn_example09.html