I add a class to an input field when the text changes using jquery in the document.onready function.
$('#formid2 input').on('change', function (e) {
$(this).addClass('changed');
});
Is there a way to verify using chrome dev tools whether the class was really added?
Right click the input field, click on inspect element, and then look at the html to see if it is there. Inside the <input> tag you should see class="changed" or whatever the name of the class is that you added.
Related
I have multiple fields including text,checkbok box, drop-down etc in jsf form, which is showing values from DB.I would like the submit button to be disabled by default and to only be clickable if the user made changes to any of the fields in the form. Please help !!
For a simple form you can use this jQuery plugin that a user mentioned here.
Edit:
The plugin is quite simple to use, and powerful, because for example you will have your buttons disabled again if you revert changes inside an input field.
Just make sure that you include the js file:
<h:outputScript name="path/jquery.are-you-sure.js"/>
And for using it, you have to add the line:
$('#idofyourform').areYouSure();
After that, for enabling and disabling submit buttons you have to add:
//All disabled by default
$('#idofyourform').find('button[type="submit"]').attr('disabled', 'disabled');
//Enabled all when there are changes
$('#idofyourform').bind('dirty.areYouSure', function () {
$(this).find('button[type="submit"]').removeAttr('disabled');
});
//Disable all when there aren't changes
$('#idofyourform').bind('clean.areYouSure', function () {
$(this).find('button[type="submit"]').attr('disabled', 'disabled');
});
Both codes inside your document ready function.
Note that I used button[type="submit"], which is what p:commandButton renders by default. You can use input if it's your case.
NOTE: This plugin also adds an extra functionality the OP didn't ask for (the dialog check when you navigate without saving changes). You can disable this if you want by doing:
$('#idofyourform').areYouSure( {'silent':true} );
Not tested, but I would simply use something like this :
$(document).ready(function() {
$('#formId input[type="submit"]').attr('disabled','disabled');
$('#formId').change(function(){ $('#formId input[type="submit"]').removeAttr('disabled'); });
});
If you don't use any jQuery functions already in the view (any PrimeFaces ajax buttons for example), you might need to add :
<h:outputScript library="primefaces" name="jquery/jquery.js" />
Here is my goal: I want to click a specific link on one page, and on the page that loads, I want to change a specific class. I am aware of the onClick function, but not sure it can be used here. Is there a way to do this?
Thank you very much.
This jquery would do what you want:
$(document).ready(function(){
var anchor = '#myanchor';
if (window.location.href.indexOf(anchor) > 0) {
//do what you want here, change classes, etc
}
});
you should place this javascript on the second page, change #myanchor for your anchor used.
Make sure to include the jquery library in the second page for this to work.
I have a form within a tab. It is second tab so it doesn't render until you open it.
I have tried to submit data to the form with Ext.getCmp('DetailsForm').getForm().setValues(selections[0]); but it says that it is not a function. Probably because it is not rendered yet. What I have to do?
Set the deferredRender config property of your Ext.tab.Panel to deferredRender: false
That will force the rendering of all tabs instead of just active ones. Now the form will be there. As mentioned before I recommend you also to use myTabPanelRef.down('from').getForm().setValues(selections[0]); to access the form.
subscribe to the second tabs show event OR painted event
then look for the form preferably by using .down() method as this wont look with in the entire DOM.
set the values
Use render event of form panel.
Your code will be something like this -
Ext.getCmp('DetailsForm').on('render', function(){
this.getForm().load(selections[0]);
});
As we are facing GWT performance issues in a mobile app I peeked into Google Wave code since it is developed with GWT.
I thought that all the buttons there are widgets but if you look into generated HTML with firebug you see no onclick attribute set on clickable divs. I wonder how they achieve it having an element that issues click or mousedown events and seemingly neither being a widget nor injected with onclick attribute.
Being able to create such components would surely take me one step further to optimizing performance.
Thanks.
ps: wasnt google going to open source client code too. Have not been able to find it.
You don't have to put an onclick attribute on the HTML to make it have an onclick handler. This is a very simple example:
<div id="mydiv">Regular old div</div>
Then in script:
document.getElementById('mydiv').onclick = function() {
alert('hello!');
}
They wouldn't set the onclick property directly, it would have been set in the GWT code or via another Javascript library.
The GWT documentation shows how to create handlers within a GWT Java app:
public void anonClickHandlerExample() {
Button b = new Button("Click Me");
b.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
// handle the click event
}
});
}
This will generate an HTML element and bind a click handler to it. However, in practice this has the same result as using document.getElementById('element').onclick() on an existing element in your page.
You can hook functions to the onclick event using JavaScript. Here's an example using jQuery:
$(document).ready(function(){
$("#div-id").click(function(){
/* Do something */
});
});
If you're interested in optimizing performance around this, you may need to investigate event delegation, depending on your situation.
A click event is generated for every DOM element within the Body. The event travels from the Body down to the element clicked (unless you are using Internet Explorer), hits the element clicked, and then bubbles back up. The event can be captured either through DOM element attributes, event handlers in the javascript, or attributes at any of the parent levels (the bubbling or capturing event triggers this).
I'd imagine they've just set it in a .js file.
Easily done with say jQuery with $(document).ready() for example.
I am designing a checkbox for a for and I absolutely cannot have the checkbox to toggle when the user clicks on its label, as this label contains a link to open a small infobox where the user gets to know what he or she is accepting by selecting the checkbox.
How can I disable checkbox toggle when clicking on its label?
The code looks simply like this (this element is inside a FormPanel items list:)
{
xtype:'checkbox',
id: 'privacyCheck',
fieldLabel: 'I have read, understood and accepted the privacy policy of ABCDE'
}
Instead of using the boxLabel property or field label on the checkbox, create a separate label object next to the checkbox. This should make it easier to manipulate your handler for the label. Otherwise, you will need to dig through the appropriate DOM element for the boxLabel (not pretty) to get at it.
I know, this topic is rather old, but I found it, searching for a solution to the exact same problem. So I'd like to share.
I needed to modify the browsers behaviour to mimick the behaviour of a legacy site, while making said site "accessible". (The for-attribute of the label tag is needed and a label without a for-attribute can not be used.)
I don't know about ExtJS, but since the legacy site uses jQuery in the frontend, I solved the problem this way:
//[...]
$(document).ready(function () {
$('.donotToogleCheckbox').click(function (event) {
event.preventDefault();
// do other stuff like displaying a dialog or something
})
});
//[...]
<label class='donotToogleCheckbox' for='myCheckbox'>DaLabel</label>
<input id='myCheckbox' name='myCheckbox' type="checkbox">
//[...]