Dart, Polymer 0.5, Dartium.
In a page I have some div element with core-a11y-keys inside, keys are "up down left right". It works perfectly, some actions are happened after key down.
Also I have input field on the page. And problem is I can't use arrow keys in it because of core-a11y-keys.
Question is: how to avoid destruction behavior?
HTML:
<body>
<div id="widgetContainer">
<core-a11y-keys target="{{body}}" keys="up down left right"
on-keys-pressed="{{widgetContainer_on_move_keys}}">
</core-a11y-keys>
</div>
<input id="txtInput">
</body>
Make sure that the target attribute of core-a11y-keys is in fact present and targeting the div, otherwise it will apply to the whole page including your input. See here for more detail on how to do that: https://groups.google.com/a/dartlang.org/forum/m/#!topic/web/k8Wzj6KCfgM
If your input was a child of the div that your core-a11y-keys was targeting, it would be doing what you instructed it to do anywhere in that div: intercepting keystrokes. In that case, you would need to handle the onKeyPress event in the input like <input on-keypress="{{handleInputKeyStrokes}}">:
handleInputKeyStrokes(Event e) {
// You'll need one or both of these; not sure which.
e.preventDefault();
e.stopPropagation();
}
I haven't tried this, and it may be that you need onKeyUp and onKeyDown instead, as in https://stackoverflow.com/a/13746419.
Related
How can I use jquery to change the id of a div acting as a jquery mobile popup as well as the href of the anchor pointing to the popup?
In my webapp I have an anchor that, when clicked, brings up a jquery mobile popup div all of which I'm inserting dynamically. In any instance of the webapp, I don't know how many times this code will be inserted. Therefore, my understanding is that I need to be able to dynamically create a unique id for the jquery mobile popup div and set the href of my popup icon.
I am not currently succeeding at dynamically changing the id and href. I've created the following test (JSFiddle Test).
Here is my sample html:
<div class="phone1">
<p class="textLeft"> <strong>Number: </strong><span>(555)555-5555</span>
Learn more
</p>
<div id="myPopup" data-role="popup" class="ui-content" data-theme="a" style="max-width:350px;">
<p class="flagText">This number has been flagged as incorrect</p>
</div>
</div>
Change href property
Here is my sample javascript / jquery:
$('#changeButton').click(function () {
alert("Handler for .click() called.");
$('.phone1 > a').prop('href', 'myNewPopup');
$('#myPopup').attr('id', 'myNewPopup');
});
Thank you for your help in advance!
As your anchor is not a direct child of .phone1 but rather a grandchild, the > selector does not work. Also the href needs the # symbol:
$('.phone1 a').prop('href', '#myNewPopup');
Technically you should also use prop to update the id as well:
$('#myPopup').prop('id', 'myNewPopup');
Updated FIDDLE
Are you sure you need to do this. After dynamically inserting the popup the first time, you could just update it each successive time by testing if it exists in the DOM first:
if ($("#myPopup").length > 0){
//update
} else {
//create
}
i dynamically generate this html code to delete an item with an id=3 for example:
"<a href='javascript:delete('" + item.id + "')>";
when i click this, it will execute delete('3');i change it as:
<a href='#delete' data-rel='popup' data-position-to='window' data-transition='pop'>
and add a dialog for this tag:
<div data-role='popup' id='delete'>
<a href='javascript:delete(item.id)' data-role='button'>delete</a>
</div>
how to transfer the item's id to this popup dialog's tag, any suggestion?
I feel like you might be going through the wrong way to achieve this. Some things to change :
delete is a JavaScript keyword. You cant use it as a function.
Don't use the onclick attribute. It results in duplication. Instead, you could use a click event for repetitive actions.
You seem to have gotten the idea to create multiple popups (one for each click of the anchor tag). I think one would do.
Now, in correlation with whatever I've just put down, here's some sample code.
HTML
<a href='#' class='delete' data-num='" + i + "'>Delete me</a>
(Note the data-num attribute in the HTML, the addition of class attribute and the removal of onclick in your code)
It could be replaced by JS which looks like this :
$(this).on("click", ".delete", function (e) {
//prevent default action
e.preventDefault();
//take the id value
var id = $(this).data("num");
//send that value to the popup
$("#delete").find("span").html(id).end().popup("open");
});
A demo fiddle for you to look at : http://jsfiddle.net/hungerpain/AxGde/2/
I want to script a click on an input box.
Here is an example where the focus() should do just that, but it doesn't! Why?
Code.gs:
function doGet(e) {
return HtmlService.createHtmlOutputFromFile('myFile');
}
myFile.html:
<input type="text" id="new" onchange="adding(this)"/>
<div id="data"></div>
<script>
document.getElementById('new').focus();
function adding(a){
document.getElementById('data').innerHTML += a.value;
a.value = '';
}
</script>
I have also tried without success putting the focus() in its own function and having a body element whose onload calls that function.
What DOES work is having a button whose onclick calls that function, so focus() does eventually become active. Is there some other event I can use to trigger it?
I am using a Chromebook. Could that be the problem?
This is an intentional security decision in Caja. Certain functions that are prone (across the web) to serious malicious misuse, such as submit() and focus(), can only be executed while in the context of a user-initiated event (such as a button click).
I'm displaying some form data in a jquery dialog. Everything works fine when I do this the first time. I can see the "my value" string in the dialog. If I reopen the dialog again for the second time the form value is no longer visible. Check out this jsfiddle to try it out yourself. This is the code:
var dialog;
$("#b1").click(function(){
dialog = $("<div></div>").html("<p><input id='input1' type='text'></p>").dialog({
autoOpen:false,
});
$("#input1").val("my value");
dialog.dialog("open");
});
This bug only happens when I add the html tags dynamically. If I use a static html block everything works fine. Any idea what is wrong here? Thanks!
That is because you are not destroying the old
<input id='input1' type='text'>
so when you call
$("#input1").val("my value");
it sets the value of first
<input id='input1' type='text'>
it finds in the DOM.
I have a page with a ticket list. In it, there is a <td> that is either a grab or release link. That link inside the '' is wrapped in a '' for an ajax html replacement. Like:
<td>
<div id="ticket_grab_release_<%= ticket.id %>">
*---- either a grab or release link here ----*
<div>
</td>
So, the user clicks on 'grab': They are assigned the ticket, the worklist is updated with their info on the page via HTML replacements, and the grab link is replaced with a 'release' link.
Next to this is a 'complete' link. When the user clicks on that, a small complete form opens in a jQuery UI-Dialog window. I ran into a problem though because along with the grab/replace link changing I also had to toggle this 'complete' link with a grey non-link 'complete' or an actual 'complete' link (if ticket released - disable complete link or visa versa).
The problem is that if this 'complete' link was greyed out and I replaced that with a 'complete' link, the UI Dialog window would not open. Like (no idea what I'm saying) the link wasn't in the DOM.
I got frustrated for a bit and then tried wrapping the script in a <div> and doing an html page replacement on the whole script. I HTML replaced the greyed out 'complete' with a 'complete' link and then HTML replaced the script right after. Interestingly that worked, but I'm really curious as to why it worked. When you ajax insert a script through an HTML replacement, does that inserted script have access to the modified DOM where the original script only has access to the what was the original DOM from the page load?
<div id="html_replace_sript">
<script type="text/javascript">
$('.complete_ticket_link' ).click(function(){
var url = $(this).attr("href");
$("#form_load").load(url,
function() {
$(this).dialog({
modal:true,
draggable: true,
resizable: false,
width:'auto',
height:'auto',
title: ' Complete Ticket ',
position: [125, 50]
});
});
return false;
});
</script>
</div>
Thanks - much apprecaited!
Check out live()'s much less recource-demanding counterpart: delegate()
Attach a handler to one or more events for all elements that match the selector, now or in the future, based on a specific set of root elements.
That means that instead of having to look through the entire window for an element, it starts at the specified root, significantly reducing overhead. This is the best solution for your issue.
The answer is YES.
But if you want to bind events to elements that match the selector now and in the future, you can use .live()
So you'd do:
$('.complete_ticket_link' ).live('click' function(){
...
});
Using this, your code can be on your main page and it will work.
Hope this helps. Cheers