I was today seeking the net for information about textbox-validation, but even on Dojo-Homepage I couldn't get any useful information.
My problem: I've got a NumberSpinner, in which only numbers in steps of ten (10, 20, 30, ...) should be allowed. But I've got no idea how to set a validator for this. In the 'constraints'-statement there seems to be no possibility to do this. And I don't know how to use the validator-function so that the box shows me warning sign immediately when typing in somethin wrong.
Another question is how to check if any part of a form is not valid before sending it. Is there an attribute in every input/select-box like 'valid' to check them all at once?
Oh, one hint, I create all widgets programmatically.
Hopefully anyone out there can help me!!!
Best regards,
Robin
You can override the NumberSpinner's isValid() method. For example:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>class</title>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/dojo/1.3/dijit/themes/soria/soria.css" />
<script src="http://ajax.googleapis.com/ajax/libs/dojo/1.3/dojo/dojo.xd.js"></script>
<script type="text/javascript">
dojo.config.parseOnLoad = true;
dojo.addOnLoad(function() {
dojo.require('dijit.form.NumberSpinner');
dojo.require('dojo.parser');
dojo.addOnLoad(function() {
new dijit.form.NumberSpinner({
isValid: function(isFocused) {
var value = parseFloat(this.attr('value'));
if (isNaN(value) || (value % 10 != 0)) {
return false;
} else {
return true;
}
}
}, 'here');
});
});
</script>
</head>
<body class="soria">
<div id="here"></div>
</body>
</html>
dijit.form.NumberSpinner is derived from dijit.form.ValidationTextBox, and as such it would accept the same arguments (see dijit.form.ValidationTextBox docs and inline docs in its source code). Just write a regular expression (as a string) that can validate your input. Something like that should do the trick:
var box = new dijit.form.NumberSpinner({
regExpGen: function(){ return "\\d+0"; }
}, "my_node");
You can also use the delta/smallDelta attribute for this. See the example at Dojo Campus
Related
Hi I have a problem that I can't quite solve. I'm a total noob with HTML/Javascript, so I'm not sure how to proceed. The instructions are in the code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Q2</title>
<script type="text/javascript" src="342.js"></script>
<script type="text/javascript">
function swap() {
if (Math.random()>.5){
document.getElementById("c").style.display = 'none';
document.getElementById("f").src = "images/f.jpg";
} else {
document.getElementById("d").style.display = 'none';
document.getElementById("f").src = "images/f.jpg";
}
}
</script>
</head>
<body>
<p>Add code so that clicking the button changes either the src "c.jpg" or "d.jpg" to "f.jpg" The choice of which should be replaced
should be determined randomly.</p>
<img src="images/c.jpg" id="c"><br>
<img src="images/d.jpg" id="d">
<br><br>
<button type="button" onclick="swap()">OK</button>
</body>
</html>
The original problem had everything but the scripts. When I try this, I'm able to get the image c or d to disappear, but image f doesn't appear. I don't know how to get the image to show. getELementById won't work because I haven't made an id, but how do I do that without having image f showing? Any help is appreciated.
Seems you're missing html
Try add f html element for work:
<img src="images/f.jpg" id="f">
The p tag in the html is talking about c.jpg, d.jpg and e.jpg.
Its not talking about f.jpg, you may want to check that
with the assumption that it is e.jpg and not "f.jpb". And also assuming that you have e.jpg in your images folder. Below code will work fine (small modification in the script)
function swap() {
if (Math.random()>.5){
// document.getElementById("c").style.display = 'none';
document.getElementById("c").src = "images/e.jpg";
} else {
// document.getElementById("d").style.display = 'none';
document.getElementById("d").src = "images/e.jpg";
}
}
I've just started becoming acquainted with qunit and I'm trying to get through the official introduction.
There are quite a lot of questions arising and I can't find anything on their documentation about qunit or elsewhere on the web.
What does "function (assert)" do? Assert is a category in qunit for several assertion methods, yet it isn't a method by itself. So if I put "assert" into the parameter of a function, what happens? Are all assertion methods associated with "assert" executed in the test?
https://qunitjs.com/intro/
Here's one piece of code where this syntax is used
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Refactored date examples</title>
<link rel="stylesheet" href="https://code.jquery.com/qunit/qunit-2.5.0.css">
<script src="https://code.jquery.com/qunit/qunit-2.5.0.js"></script>
<script src="prettydate.js"></script>
<script>
QUnit.test("prettydate basics", function( assert ) {
var now = "2008/01/28 22:25:00";
assert.equal(prettyDate(now, "2008/01/28 22:24:30"), "just now");
assert.equal(prettyDate(now, "2008/01/28 22:23:30"), "1 minute ago");
assert.equal(prettyDate(now, "2008/01/28 21:23:30"), "1 hour ago");
assert.equal(prettyDate(now, "2008/01/27 22:23:30"), "Yesterday");
assert.equal(prettyDate(now, "2008/01/26 22:23:30"), "2 days ago");
assert.equal(prettyDate(now, "2007/01/26 22:23:30"), undefined);
});
</script>
</head>
<body>
<div id="qunit"></div>
</body>
</html>
The full line is:
QUnit.test("prettydate basics", function( assert ) {
This calls the function QUnit.test, and you're passing it a callback. That callback takes one parameter. QUnit.test will pass an object as the first argument to your callback, which becomes your assert parameter. That object has various methods for asserting things.
It's basically injecting the assertion object into your code so you can use it to make assertions.
Roughly QUnit.test is implemented like this:
QUnit.test = function (name, callback) {
const assert = {
equal: function () { ... },
...
};
callback(assert);
};
I don't know how to solve the following: I'd like to let my Model generate real javascript dynamically based on some model logic.
This final piece of javascript code then should be added inside the $(document).ready { } part of my html page.
The thing is: If I use inline="javascript", the code gets quoted as my getter is a String (that is how it is mentioned in the Thymeleaf doc but it's not what I need ;-)
If I use inline="text" in is not quoted but all quotes are escaped instead ;-) - also nice but unusable 8)
If I try inline="none" nothing happens.
Here are the examples
My model getter created the following Javascript code.
PageHelper class
public String documentReady() {
// do some database operations to get the numbers 8,5,3,2
return "PhotoGallery.load(8,5,3,2).loadTheme(name='basic')";
}
So if I now try inline="javascript"
<script th:inline="javascript">
/*<![CDATA[*/
jQuery().ready(function(){
/*[[${pageHelper.documentReady}]]*/
});
/*]]>*/
</script>
it will be rendered to
<script>
/*<![CDATA[*/
jQuery().ready(function(){
'PhotoGallery.load(8,5,3,2).loadTheme(name=\'basic\')'
});
/*]]>*/
</script>
Which doesn't help as it is a String literal, nothing more (this is how Thymeleaf deals with it).
So if I try inline="text" instead
<script>
/*<![CDATA[*/
jQuery().ready(function(){
PhotoGallery.load(8,5,3,2).loadTheme(name='basic')
});
/*]]>*/
</script>
Which escapes the quotes.
inline="none" I do not really understand, as it does nothing
<script>
/*<![CDATA[*/
jQuery().ready(function(){
[[${pageHelper.documentReady}]]
});
/*]]>*/
</script>
To be honest I have no idea how to solve this issue and hopefully anybody out there knows how to deal with this.
Many thanks in advance
Cheers
John
I would change the approach.
Thymeleaf easily allows you to add model variables in your templates to be used in Javascript. In my implementations, I usually put those variables somewhere before the closing header tag; to ensure they're on the page once the JS loads.
I let the template decide what exactly to load, of course. If you're displaying a gallery, then render it as you would and use data attributes to define the gallery that relates to some JS code. Then write yourself a nice jQuery plugin to handle your gallery.
A relatively basic example:
Default Layout Decorator: layout/default.html
<!doctype html>
<html xmlns:layout="http://www.thymeleaf.org" xmlns:th="http://www.thymeleaf.org">
<head>
<title>My Example App</title>
<object th:remove="tag" th:include="fragments/scripts :: header" />
</head>
<body>
<div layout:fragment="content"></div>
<div th:remove="tag" th:replace="fragments/scripts :: footer"></div>
<div th:remove="tag" layout:fragment="footer-scripts"></div>
</body>
</html>
The thing to notice here is the inclusion of the generic footer scripts and then a layout:fragment div defined. This layout div is what we're going to use to include our jQuery plugin needed for the gallery.
File with general scripts: fragments/scripts.html
<div th:fragment="header" xmlns:th="http://www.thymeleaf.org">
<script type="text/javascript" th:inline="javascript">
/*<![CDATA[*/
var MY_APP = {
contextPath: /*[[#{/}]]*/,
defaultTheme: /*[[${theme == null} ? null : ${theme}]]*/,
gallery: {
theme: /*[[${gallery == null} ? null : ${gallery.theme}]]*/,
images: /*[[${gallery == null} ? null : ${gallery.images}]]*/,
names: /*[[${gallery == null} ? null : ${gallery.names}]]*/
}
};
/*]]>*/
</script>
</div>
<div th:fragment="footer" xmlns:th="http://www.thymeleaf.org">
<script type="text/javascript" src="/js/jquery.js"></script>
<script type="text/javascript" src="/js/my_app.js"></script>
</div>
In the scripts file, there are 2 fragments, which are included from the decorator. In the header fragment, a helpful context path is included for the JS layer, as well as a defaultTheme just for the hell of it. A gallery object is then defined and assigned from our model. The footer fragment loads the jQuery library and a main site JS file, again for purposes of this example.
A page with a lazy-loaded gallery: products.html
<html layout:decorator="layout/default" xmlns:layout="http://www.thymeleaf.org/" xmlns:th="http://www.thymeleaf.org">
<head>
<title>Products Landing Page</title>
</head>
<body>
<div layout:fragment="content">
<h1>Products</h1>
<div data-gallery="lazyload"></div>
</div>
<div th:remove="tag" layout:fragment="footer-scripts">
<script type="text/javascript" src="/js/my_gallery.js"></script>
</div>
</body>
</html>
Our products page doesn't have much on it. Using the default decorator, this page overrides the page title in the head. Our content fragment includes a title in an h1 tag and an empty div with a data-gallery attribute. This attribute is what we'll use in our jQuery plugin to initialize the gallery.
The value is set to lazyload, so our plugin knows that we need to find the image IDs in some variable set somewhere. This could have easily been empty if the only thing our plugin supports is a lazyloaded gallery.
So the layout loads some default scripts and with cleverly placed layout:fragments, you allow certain sections of the site to load libraries independent of the rest.
Here's a basic Spring controller example, to work with our app: MyController.java
#Controller
public class MyController {
#RequestMapping("/products")
public String products(Model model) {
class Gallery {
public String theme;
public int[] images;
public String[] names;
public Gallery() {
this.theme = "basic";
this.images = new int[] {8,5,3,2};
this.names = new String[] {"Hey", "\"there's\"", "foo", "bar"};
}
}
model.addAttribute("gallery", new Gallery());
return "products";
}
}
The Gallery class was tossed inline in the products method, to simplify our example here. This could easily be a service or repository of some type that returns an array of identifiers, or whatever you need.
The jQuery plugin that we created, could look something like so: my_gallery.js
(function($) {
var MyGallery = function(element) {
this.$el = $(element);
this.type = this.$el.data('gallery');
if (this.type == 'lazyload') {
this.initLazyLoadedGallery();
}
};
MyGallery.prototype.initLazyLoadedGallery = function() {
// do some gallery loading magic here
// check the variables we loaded in our header
if (MY_APP.gallery.images.length) {
// we have images... sweet! let's fetch them and then do something cool.
PhotoGallery.load(MY_APP.gallery.images).loadTheme({
name: MY_APP.gallery.theme
});
// or if load() requires separate params
var imgs = MY_APP.gallery.images;
PhotoGallery.load(imgs[0],imgs[1],imgs[2],imgs[3]).loadTheme({
name: MY_APP.gallery.theme
});
}
};
// the plugin definition
$.fn.myGallery = function() {
return this.each(function() {
if (!$.data(this, 'myGallery')) {
$.data(this, 'myGallery', new MyGallery(this));
}
});
};
// initialize our gallery on all elements that have that data-gallery attribute
$('[data-gallery]').myGallery();
}(jQuery));
The final rendering of the products page would look like so:
<!doctype html>
<html>
<head>
<title>Products Landing Page</title>
<script type="text/javascript">
/*<![CDATA[*/
var MY_APP = {
contextPath: '/',
defaultTheme: null,
gallery: {
theme: 'basic',
images: [8,5,3,2],
names: ['Hey','\"there\'s\"','foo','bar']
}
};
/*]]>*/
</script>
</head>
<body>
<div>
<h1>Products</h1>
<div data-gallery="lazyload"></div>
</div>
<script type="text/javascript" src="/js/jquery.js"></script>
<script type="text/javascript" src="/js/my_app.js"></script>
<script type="text/javascript" src="/js/my_gallery.js"></script>
</body>
</html>
As you can see, Thymeleaf does a pretty good job of translating your model to valid JS and actually adds the quotes where needed and escapes them as well. Once the page finishes rendering, with the jQuery plugin at the end of the file, everything needed to initialize the gallery should be loaded and ready to go.
This is not a perfect example, but I think it's a pretty straight-forward design pattern for a web app.
instead of ${pageHelper.documentReady} use ${pageHelper.documentReady}
I'm simply trying to pull a div from a page called "Load-about.php" to my main page with AJAX.
I've been following tutsnet courses "30 Days to learn jQuery" but I'm stuck when it is about to load a content from another page since I'm using CI and I'm trying to adapt those courses.
So I have my main page:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Load</title>
<link rel="stylesheet" href="<?php echo base_url('bootstrap/css/bootstrap.min.css'); ?>" >
<style>
</style>
</head>
<body>
Try to make AJAX working !
</br>
Contact
<div class="wrap"></div>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
(function() {
var wrap = $('div.wrap');
$('a').on('click', function(e) {
var href = $(this).attr('href');
wrap.load(href +'.container' ) ;
e.preventDefault();
});
})();
</script>
</body>
</html>
I'm simply calling a very simple CI Controller that only call the asked view
And Everything was working fine when working without the links.
But now, I am redirected to the page instead of using the AJAX call. Why ? Why does
e.preventDefault();
or
return false;
isn't preventing the links to their default action ?
Thanks
EDIT: Thanks to Jai, I found my error, a simple coma.
But, now, I'm getting "GET http://www.localhost.com/CodeIgniterJQUERY/index.php/Ajax/lessonTwentyThree/Load-Contact.container 500 (Internal Server Error) "
the problem comes from the .container as I wanted to specify the class and Ci understand it as it is a parameter.
Here is the Controller :
class Ajax extends CI_Controller {
/**
* Nous allons ici nous occuper de toutes les fcts AJAX
*/
public function lessonTwentyThree($page)
{ // En fait, on a pas besoin de ca, on va directement loader la vue directement.
$this->load->view($page);
}
}
I just want to grab a div from Load-Contact to the main page.
In addition to what Jai said. you have a codeigniter logical error.
when you say:
$this->load->view($page);
it means that codeigniter will redirect internally to the view. In your case what you need is to get back the view content and not to load it.
So, codeigniter support a third parameter with function view() that asks it to get the view content as String. you can do that and send the view to be loaded like this:
$string = $this->load->view($page, '', true);
echo $string;
Hope this will solve your problem
You have to move it up:
(function($) {
var wrap = $('div.wrap');
$('a').on('click', function(e) {
e.preventDefault();
var href = $(this).attr('href');
wrap.load(href +'.container' ) ;
});
})(jQuery);
and you have to put a ',' after click handler.
also try to change
(function() {
})();
to
$(function() {
});
<html>
<head>
<title></title>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?libraries=places&sensor=true"></script>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
var input = document.getElementById('location');
var options = {
types: ["locality"]
};
autocomplete = new google.maps.places.Autocomplete(input, options);
});
</script>
</head>
<body>
<div>Location: <input type="text" id="location" style="width:400px;" /></div>
</body>
</html>
There is my code to generate my autocomplete location text input. Google's list of supported types (http://code.google.com/apis/maps/documentation/places/supported_types.html) shows "locality" as being the type to use when I do not wish for everything to come back in the result(businesses, etc). I am getting no results.
Basically, what I would like to achieve is to search for a city (IE: Toronto) And only see results like: "Toronto, ON, Canada". Perhaps I am confused on how I implement this API.
Thank you very much for your replies!
I think the option you are looking for according to the docs is "geocode" ( http://code.google.com/apis/maps/documentation/javascript/reference.html#AutocompleteOptions ):
var options = {
types: ["geocode"]
};
you can also use the country restriction
example:
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?libraries=places&sensor=false"></script>
<script type="text/javascript">
function initialize()
{
var input = document.getElementById('searchTextField');
var options = {
types: ['(cities)'],
componentRestrictions: {country: "ca"}
};
autocomplete = new google.maps.places.Autocomplete(input, options);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
<input id="searchTextField" type="text" size="50" placeholder="Anything you want!">
now you can easily add a dropdown with a selection of cities and re-filter the cities, when onchange of the dropdown occurs :)
Try, check out the jsfiddle:
var options = {
types: ['geocode']
};
types, which can be either establishment or geocode, representing
businesses or addresses, respectively. If types is not specified, both
types are returned.
If the user types Tor in the input field and the output you want is Toronto, ON, Canada then you should use types=(regions), with the brackets.
I don't know if the option was present when the question was asked, but it is available now.
Sample Request:
https://maps.googleapis.com/maps/api/place/autocomplete/json?input=Tor&key=<YOUR_API_KEY_HERE>&types=(regions)
You can use like this
types: ['geocode' || 'establishment' || 'address']