I am trying angular.dart and saw that its slow. When am html page is loaded containing angular, angular directive is seen first, which are then converted appropriately. Shouldn't it be converted instantaneously and the user should not see whether we are using angular ?
<!DOCTYPE html>
<html ng-app>
<head>
<title>Hello, World!</title>
</head>
<body>
<h3>Hello {{name}}!</h3>
name: <input type="text" ng-model="name">
<script type="application/dart" src="main.dart"></script>
<script type="text/javascript" src="packages/browser/dart.js"></script>
</body>
</html>
Surround {{name}} with a tag having class="ng-cloak". I used span tag. Keep it hidden by specifying css rule .ng-cloak{ display:none; }.
When angular is loaded, it will remove class="ng-cloak" from the span tag and everything will work as expected.
<!DOCTYPE html>
<html ng-app>
<head>
<title>Hello, World!</title>
<style>
.ng-cloak{ display:none;}
</style>
</head>
<body>
<h3>Hello <span class="ng-cloak">{{name}}</span>!</h3>
name: <input type="text" ng-model="name">
<script type="application/dart" src="main.dart"></script>
</body>
</html>
An alternative way is to use ng-bind as demonstrated in this youtube video: AngularJS MTV Meetup: Best Practices (2012/12/11) (after about 12 minutes)
Quoted from the API doc of NgBindDirective class
Typically, you don't use ngBind directly, but instead you use the
double curly markup like {{ expression }} which is similar but less
verbose.
It is preferrable to use ngBind instead of {{ expression }} when a
template is momentarily displayed by the browser in its raw state
before Angular compiles it. Since ngBind is an element attribute, it
makes the bindings invisible to the user while the page is loading.
This way you can display default content that get's replaced when Angular is ready
instead of showing a blank page or a progress icon.
Related
I have created two Dart app using Polymer. The two tags created are: weather-tag and qotd-tag.
In weather-tag, I am getting weather information from a remote service and in qotd-tag I am getting qotd from local machine. Both running fine in Dart and also in compiled JS.
I am now integrating these two Dart "widget" into my own index.html.
The HTML snippet is like following:
<html lang="zh-CN">
<head>
<script src="/packages/shadow_dom/shadow_dom.debug.js"></script>
<script src="/packages/custom_element/custom-elements.debug.js"></script>
<script src="/packages/browser/interop.js"></script>
<meta charset="utf-8">
<script src="/getqotd.html_bootstrap.dart.js"></script>
<script src="/getweather.html_bootstrap.dart.js"></script>
</head>
<body id="home">
<polymer-element name="qotd-tag">
<template>...
</template>
</polymer-element>
<polymer-element name="weather-tag">
<template>...
</template>
</polymer-element>
<weather-tag></weather-tag>
<qotd-tag></qotd-tag>
</body>
</html>
The problem is it only shows the qotd-tag.
If I took out all qotd-tag related reference (js, polymer-element, the tag), weather-tag can be displayed correctly.
If I change the sequence of the two js file (weather.js comes first and then qotd.js), now it shows only the weather-tag.
I think there must be some conflict in the js declaration.
I can solve this issue by building a new tag with the two tags' functions but is there a way to have two or more polymer-element in one HTML file?
This is how you can import and use two elements in a Dart app:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="import" href="foo_element.html">
<link rel="import" href="bar_element.html">
<script type="application/dart">export 'package:polymer/init.dart';</script>
<script src="packages/browser/dart.js"></script>
</head>
<body>
<foo-element></foo-element>
<bar-element></bar-element>
</body>
</html>
For the full code, look at this gist:
https://gist.github.com/shailen/8055849
I see some others (e.g. this post) have had trouble using external javascript scripts in JQuery Mobile - as of today I have joined their ranks.
I have a single external js script (controllers.js) which contains code that affects several pages on the site. It is loaded on every page of the site. I put the js file just before the tag it works fine on the initial page load. However when I navigate thereafter (using the JQM Ajax methods) all functions in the script stop working. I would have thought the script would remain in cache - but heyho. Anyhow there's an FAQ which answers this question and I've implemented their suggestion which is: "...to reference the same set of stylesheets and scripts in the head of every page." I have done this but when I do even on the first page load the js doesn't fire. There aren't page specific scripts - so the remainder of that FAQ does not apply.
My cut down html looks like this:
<!doctype html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<link rel="stylesheet" href="/static/jquery-ui-1.10.3.custom.min.css">
<link rel="stylesheet" href="/static/jquery-mobile/css/themes/default/jquery.mobile-1.3.2.min.css">
<script src="/static/jquery-1.9.1.min.js"></script>
<script src="/static/jquery-ui/jquery-ui-1.10.3.custom/js/jquery-ui-1.10.3.custom.min.js"></script>
<script src="/static/jquery-mobile/js/jquery.mobile-1.3.2.min.js"></script>
<!-- CSS: implied media="all" -->
</head>
<body>
<div data-role="page" id = "main-page">
<div data-role="header" style="overflow:hidden;">
</div>
<div id = "home" data-role="content">
<input type ='button' id = "some_btn" value="press me">
</div>
</div>
<script type="text/javascript" src="/static/js/controllers.js"></script>
</body>
</html>
and within the javascript file
controllers.js
$('#some_btn').click(function()
{
alert('button pressed');
});
Any ideas on what I may be doing wrong here?
Since the content in the #page is loaded dynamically via ajax, click will not work, since it only works on elements that are on the page when the script is called.
You need to use the .on() method:
$('body').on('click','#some_btn',function()
{
alert('button pressed');
});
In this case, hovering over the left link makes a tiny dash appear to its right (between the two links). How can I get rid of this? I see this in Safari and Chrome both, but I don't see anything in the style sheet that would make it do this.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Walls</title>
<link href="bootstrap/css/bootstrap.min.css" rel="stylesheet" media="screen">
<link rel="stylesheet" href="custo.css">
<script src="prettyPhoto_compressed_3/js/jquery-1.3.2.min.js" type="text/javascript" charset="utf-8"></script>
<link rel="stylesheet" href="prettyPhoto_compressed_3/css/prettyPhoto.css" type="text/css" media="screen" charset="utf-8" />
<script src="prettyPhoto_compressed_3/js/jquery.prettyPhoto.js" type="text/javascript" charset="utf-8"></script>
</head>
</head>
<body>
<br>
<a href="gallery.html">
<img src="test.jpg" class="testclass" alt="test" width="170" />
</a>
<a href="info.html">
<img src="test.jpg" class="testclass" alt="test" width="55" />
</a>
<div class="container-fluid">
<br>
</div><!-- .container -->
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script type="text/javascript" charset="utf-8"> <!--initialize prettyPhoto-->
$(document).ready(function(){
$("a[rel^='prettyPhoto']").prettyPhoto();
});
</script>
</body>
</html>
If you're seeing the same thing I'm seeing (I don't have all the style sheets), you're seeing the underline of the a tag for the image.
You can just remove that using text-decoration: none on your image links;
<a href="gallery.html" style="text-decoration: none !important;">
The !important at the end of the style helps to override any selectors in your css which may have already have an !important emphasis.
Of course this is in practice better done using a class that you set on your image links.
This is an old post, but I would like to contribute to something. This will help other people why the dash (-) appears.
This is because there is an empty space inside the a tag. For example:
<a href="#">
<i>test</i>
</a>
If you set your line like this: <i>test</i> the dash/underline will disappear, but some tools might still format your code and they will add the space. So, using the css mentioned in the previous post will eliminate the issue.
I created a new test project in MVC4 to test if I could use Facebook Helper from the Nuget gallery. I followed the instructions which are very simple, point and click to install the Facebook helper from Nuget, edit your page, and insert like button.
When I run the project I can actually see the facebook likebutton being generated when I view it through firebug, but it does not appear on the page.
Here is my default index page
#{
ViewBag.Title = "Home Page";
}
#section featured {
<section class="featured">
<div class="content-wrapper">
<hgroup class="title">
<h1>#ViewBag.Title.</h1>
<h2>#ViewBag.Message</h2>
</hgroup>
<p>
To learn more about ASP.NET MVC visit
http://asp.net/mvc.
The page features <mark>videos, tutorials, and samples</mark> to help you get the most from ASP.NET MVC.
If you have any questions about ASP.NET MVC visit
our forums.
</p>
</div>
</section>
}
<h3>We suggest the following:</h3>
<div>
#Facebook.LikeButton()
</div>
I´ve gone through several pages regarding Facebook helper and they all describe the process in the same way. Does anyone know if I should config any files before using this library?
Edited:
I will paste my html code that is loaded into the markup after execution. I will abbreviate some scripts and stuff since it has many hundreds of line of code :)
<html id="facebook" class="" lang="en">
<head>
<meta charset="utf-8">
<script>
<script>
<noscript><meta http-equiv="refresh" content="0; URL=/plugins/like.php?href=http%3A%2F%2Flocalhost%3A13876%2F&layout=standard&show_faces=src&width=450&action=like&colorscheme=light&height=80&font&locale=en_US&ref&_fb_noscript=1" /></noscript>
<meta content="noodp, noydir" name="robots">
<meta id="meta_referrer" content="default" name="referrer">
<meta content="Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people they meet." name="description">
<link href="https://www.facebook.com/plugins/like.php?href=http%3A%2F%2Flocalhost%3A13876%2F&layout=standard&show_faces=src&width=450&action=like&colorscheme=light&height=80&font&locale=en_US&ref" media="handheld" rel="alternate">
<title>Facebook</title>
<link href="https://fbstatic-a.akamaihd.net/rsrc.php/v2/yc/r/-WUN6qLbp5n.css" rel="stylesheet">
<link href="https://fbstatic-a.akamaihd.net/rsrc.php/v2/yf/r/gd49XKRAMNQ.css" rel="stylesheet">
<link href="https://fbstatic-a.akamaihd.net/rsrc.php/v2/yc/r/XaOowWd9_Aq.css" rel="stylesheet">
<link href="https://fbstatic-a.akamaihd.net/rsrc.php/v2/yH/r/Dpn1SKTH3-z.css" rel="stylesheet">
<script src="https://fbstatic-a.akamaihd.net/rsrc.php/v2/yB/r/Vm1JnKckidu.js">
<script src="https://fbstatic-a.akamaihd.net/rsrc.php/v2/y-/r/ARN_8tuLdws.js">
<script src="https://fbstatic-a.akamaihd.net/rsrc.php/v2/yq/r/XboiPeV3jQI.js">
<script>
<script>
<script src="https://fbstatic-a.akamaihd.net/rsrc.php/v2/yP/r/eTzqwp1jxjF.js" async="">
<script src="https://fbstatic-a.akamaihd.net/rsrc.php/v2/yh/r/aTzvHAZI_Jd.js" async="">
</head>
<body class="plugin ff4 win Locale_en_US">
<div id="FB_HiddenContainer" style="position:absolute; top:-10000px; width:0px; height:0px;"></div>
<script>
<script>
<script>
</body>
</html>
See where in the Url it generates (link href="https://www.facebook...) it says "&show_faces=src"
That causes the problem; it should be "&show_faces=true"
Even though true is supposed to be the default, if you have this issue try changing it to: #Facebook.LikeButton(showFaces: false)
EDIT: this only helps if you set it to false. Same issue with LikeBox and all boolean properties.
If the HTML is being rendered I can only assume the problem it's a CSS problem, check the styling of the elements in FireBug and make sure they aren't being hidden e.g. check for display: none or visibility: hidden or make sure there isn't float applied which is taking it off the screen.
I must be missing something very basic in the CSS. My jQuery anchor button is functional, but it's rendering as a simple underlined label, not asa rounded-corner UI button. I would be grateful if someone could point out the error in this simple example.
Thanks
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<HTML LANG="en-US">
<HEAD>
<TITLE>button test</TITLE>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="Expires" content="Sat, 22 May 2010 00:00:11 GMT">
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/jquery-ui.min.js"></script>
<SCRIPT type="text/javascript">
$(document).ready(
function() {
$('a','.test').click(function(){showIntro();return false;});
});
function showIntro()
{
document.location.href="intro.htm";
}
</script>
<body>
<div class='test'>Button</div>
</body>
</html>
You need to actually make it a button using .button(), like this:
$(function() {
$(".test a").button();
});
You can see the jQuery UI demos here and a demo of your markup working here.
You need to add the proper class to the link, using jQuery or otherwise.
Try:
Button
You do not need to make it a button you just need
$(".test a").click(function(){showIntro();return false;});
What you are trying to do with your selector passing the second paramater is the Scope.
The second paramater is not mean to be a string (selector) it should be a jQuery Object.
So if you wanted to do it your way your would have to say
var test = $('.test');
$('a',test).click...
But the 1st method is prefered over doing it this way.
Sorry to be providing an answer, if not "the" answer, to my own question, but I have discovered a clue as to what's going on, if not the ultimate cause of the behavior. Below is code cut and pasted from the Button example on the jQuery website; take it to jsFiddle and run it: it works. But if you remove this line relating to the input-button:
$("button, input:submit, a", ".demo").button();
then the anchor-button fails to render properly. Why is the anchor-element's rendering dependent on the existence of the input-button?
<script type="text/javascript">
$(function() {
$("button, input:submit, a", ".demo").button();
$("a", ".demo").click(function() { return false; });
});
</script>
<style>
</style>
<div class="demo">
<button>A button element</button>
<input type="submit" value="A submit button">
An anchor
</div><!-- End demo -->