I have written some code that generates a set of buttons when the page loads using a loop, each iteration of the loop increments an ID value to assign to the new button.
I originally wrote it using standard JQuery but because of the way JQuery Mobile works, I am having to rewrite it.
<a id = "<?php echo $button_id_add_to_cookbook ?>"onclick="update_button('<?php echo $button_id_add_to_cookbook ?>')" data-role="button">Send</a>
the function update button is below, at least the test trial version.
function update_button(id)
{
$(id).click(function(){
$(id).toggle();
});
}
I'm having a hard time finding 2 accounts that say how to do this the same way so don't think this is correct.
The goal it to dynamically generate a set of buttons and when a button is clicked, it will call some code to alter a mysql database and on success hide the button that called the function. For this example I just want to hide the button when t was clicked.
Can anyone help me with the correct way to do this, the page should not refresh, just update the button element.
I think it was a spacing issue causing problems, for dynamic id content this seemed to work as a replacement function.
function update_button(id)
{
$('#' + id).closest('.ui-btn').hide();
}
if this will lead to any issues in the long term please let me know!
I am using Shield ASP.NET MVC charts on a page. I need the charts to initially show data for my visitors, and I need to provide the user the possibility to hide the charts by clicking on the corresponding button(s). For this purpose I use the following function:
<script>
function HideChart() {
document.getElementById("DataSpot").innerHTML = "";
}
</script>
And I am placing the charts as follows:
<p id="DataSpot">
#(Html.ShieldChart()
.Name("chart")
.PrimaryHeader(header => header.Text("Profile Hits"))
.Export(false)
.AxisX(axisX => axisX
………..
)
</p>
<button onclick="HideChart()">Hide Chart</button>
The problem is, that when I click on the button, nothing happens.
#user2492467,
Do you need to hide the chart or do you need to wipe out its content? If just hiding the chart, the approach suggested by Chris would work just fine. However, if you need to irrevocably wipe out the chart from the page altogether, then clearing its content is not enough. Only removing the rendered chart markup would open the door for memory leaks, as references to the DOM nodes may remain in the chart javascript component.
A better approach would be to find the javascript component instance and call its .destroy() method. This will ensure the component is fully destroyed and no memory is leaked:
$("#DataSpot").swidget().destroy();
Note that you still need to give your chart a name using the MVC wrapper's .Name("DataSpot") method just like Ed suggests. This will give your chart's HTML element an ID that you can use with jQuery to find the chart instance.
The .swidget() method is a standard jQuery extension method added by the Shield UI javascript framework. It returns the javascript component instance associated with the element matched by the jQuery selector. This is how you find the chart instance.
How about:
<script>
function HideChart() {
document.getElementById('DataSpot').style.display='none';
}
</script>
You should also update your button:
<button type="button" onclick="HideChart()" value="Hide Chart" />
Actually there is something happening, obviously not the thing that you need. This is because you need to wipe out the rendered chart by referencing its container.
The element is fine and if you put some text in your function and execute it you will see that it will appear on the appropriate spot. However to hide the chart you need to use it’s name. In other words the following statement:
document.getElementById("DataSpot").innerHTML = "";
should be changed to
document.getElementById("chart").innerHTML = "";
or you may rename the chart to
.Name("DataSpot ")
and remove the P element in both cases since it makes no use.
I need to set up two jQuery UI date pickers to always be displayed. I know there's an easy way to do this with DIVs, but I can't find anything on how to do it for inputs. I've tried the "show" method in the jQuery UI documentation, but that just acts as a click on the input on page load, which isn't what I'm looking for.
I just tested the code below and it always remains on the page. You will need to handle the selection/click events by passing options the datepicker in the javascript. I added the JS for when the user selects a date... that should give you enough to go off of.
HTML:
<div id="test"></div>
<input type="text" id="date_input">
Javascript:
$('#test').datepicker({
onSelect: function(date, obj){
$('#date_input').val(date); //Updates value of of your input
}
});
I'm trying to use Ajax in one of my Rails applications to have a form_tag textarea change its contents according to the selected value of a dropdown that is out of that form_tag.
I would like to ask, what is the correct way of handling this ? Is it possible to respond to js in my show action and have a js.rjs ? Do you happen to know of any resources or can offer some insight ?
You should write a javascript, which triggers on the dropdown menu's onchange event, and start an ajax process. With jQuery it is something like this (in your show code within a script tag):
$("#dropdownMenuName").change(function(){
$.get("controller/action.txt", function(data){ $("#textareaName").val(data); } );
});
This simply sends a request to your app on the controller/action.txt action, and the result is pasted into the textarea's text property. Of course you should write the answer as a simple text, as the result is printed in the textarea instantly.
I'm working with a dynamic DOM here, and have called the jQuery UI datepicker to all inputs with a specific class name, in this case .date
It works great with the first, static, construct but when I clone it the event handlers don't seem to want to move over. I get the Firebug error:
inst is undefined
I tried looking into jQuery's new live() function but couldn't combine the two. Any ideas?
Ah, got it. Right after I append the HTML to the DOM I run this on all the inputs I'd like to have a datepicker pop up with. Datepicker adds a class to elements it has been attached to, so we can filter out existing inputs and only apply it to new ones.
$('.date').not('.hasDatePicker').datepicker();
I hope this helps people as I was Googling for days and didn't find anything!
You should also note that it would be faster to check for input.date in the new generated HTML by setting that as a context, rather than the whole page, as it will save time, due to this being a more efficient operation.
I had a similar Issue, I had multiple tables on a page and each had multiple datepickers, also on click of button "AddLine" it added a table row with dynamic HTML and datepicker.
I realized after a lot of search that my input date fields had no "id" defined they looked like this
<input type="text" class="datepicker" name="mDate1" value="" size=8 >
jquery was pointing all the date fields values to the very first date field defined on page, the calendar would popup on all the date fields but the value of 1st date field would change, I made a change to the html like this
<input type="text" class="datepicker" id="Date1" name="mDate1" value="" size=8 >
by adding a "id" and it started working, for the dynamic date fields I change the Id like this
var allColumns = $("#"+$tableId+" tr:last td");
$(allColumns).each(function (i,val) {
if($(val).find(":input").hasClass("datepicker")){
$(val).find(":input").attr("id",newId+$(val).find(":input").attr("id"));
}
});
You need to use the 'live' event to make it work with dynamic DOM. So, if the class for your datepicker inputs is 'date-input', following code will make it work:
$(document).ready(function() {
$('.date-input').live('click', function() {
$(this).datepicker('destroy').datepicker({showOn:'focus'}).focus();
});
});
This might be a little late, but all the suggestions above didn't work for me, I came up with an easy solution for this.
First, what is causing the problem:
JQuery assign datepicker to element id. if you are cloning element, then same id might be cloned as well. which jQuery doesn't like. You might end up with either receiving null reference error or the date being assigned to first input field regardless which input field you click on.
Solution:
1) destroy datepicker
2) assign new unique ids to all input field
3) assign datepicker for each input
Make sure your input is something like this
<input type="text" name="ndate[]" id="date1" class="n1datepicker">
Before you clone, destroy datepicker
$('.n1datepicker').datepicker('destroy');
After you clone, add these lines as well
var i = 0;
$('.n1datepicker').each(function () {
$(this).attr("id",'date' + i).datepicker();
i++;
});
and the magic happens
Use
$j(id or class).removeClass('hasDatepicker').datepicker();
It is working
Use jQuery selectors:
$(".mydatepicker:not(.hasDatepicker)").datepicker()
Multiple instances of the jquery-ui library on the page will cause this error too. Removing redundant instances work for my case
I experienced the same symptom, in this caused by having a td containing element with the same id attribute as the input,
<td id="fld_xyz"><input id="fld_xyz" class="date" /></td>
I know this isn't ideal anyway, but it's worth knowing that the datepicker component seems to be relying on the uniqueness of the id.
I had this problem. My situation ended up being I had another element with the same ID as the input with the datepicker.
Today I faced the same issue... I am using datetimepicker plugin in my application.
Also using jquery's default datepicker too. When ever I am invoking them both on document ready I am getting the error inst is undefined.
$(document).ready(function(){
$(".datepickerCustom").datetimepicker();
$(".datepicker").datepicker();
$("#MainForm").validationEngine('attach');
....
});
So I changed the code to invoke before document ready like below:
$(".datepickerCustom").datetimepicker();
$(".datepicker").datepicker();
$(document).ready(function(){
$("#MainForm").validationEngine('attach');
....
});
Now every thing is working fine. No problems.
I had a similar problem with data picker not working after a first call. I found an answer to my issue here:
http://www.stemkoski.com/problem-with-jquery-ui-datepicker-dynamic-dom/
I was cloning sections dynamically from template and inadvertently including the class that datepicker adds once its called:
hasDatepicker
I placed my first datepicker call after I clone the template and that did it. I then added a datepicker call after each instance of clone:
$(source).clone().appendTo(destination).find(".datepicker").datepicker();
After trying many of the answers here, this is what worked for me and is showing on the first click/focus
function vincularDatePickers() {
$('.mostrar_calendario').live('click', function () {
$(this).datepicker({ showButtonPanel: true, changeMonth: true, changeYear: true, showOn: 'focus' }).focus();
});
}
this needs that your input have the class 'mostrar_calendario'
live is for JQuery 1.3+ for newer versions you need to adapt this to "on"
See more about the difference here http://api.jquery.com/live/
If it still doesn't work, it is because of the cloned id. You can completely remove datepicker like this:
$(selector).removeClass('hasDatepicker').removeAttr('id').datepicker();