When I call a rest service then i will get .html file from server. But it showing scripts for 1 or 2 seconds. Then it shows correct values.My problem is page loads first then controller binds data. Is there is any way to bind data before loading page?
There are basically two options that I know of:
The preferred option is to add ng-cloak to sections of the page that contain angular templates. From the docs:
<div id="template1" ng-cloak>{{ 'hello' }}</div>
<div id="template2" ng-cloak class="ng-cloak">{{ 'hello IE7' }}</div>
Use ng-bind instead of the {{ }} approach. For example:
<div ng-bind="marked4Reviewcount"></div>
Have a look at the ngCloak directive. It temporarily hides the Angular template while the page is being loaded. You could apply it on the body tag, but it's advised to do it on portions of the page so you get a progressive loading effect.
http://docs.angularjs.org/api/ng.directive:ngCloak
Related
how to hide angularJs Code when page is refreshed ?
please see this :
how to hide {{userInfo.UserName}} when page is refreshed ?
this is Not user-friendly.
Just use ng-cloak:
<div id="template1" ng-cloak>{{ 'hello' }}</div>
<div id="template2" class="ng-cloak">{{ 'world' }}</div>
it hides given elements until your application is loaded. Note that documentation states that for best results, you should load angular.js in the head section, what ensures that functionality is accessible right after head has been processed.
When I change the path of the page, my ng-view keeps its contents until the new ones are loaded by my routeProvider. Is there a way to hide them immediately and display a spinner till the new ones load?
See this fiddle regarding loading screen (can customize as necessary): http://jsfiddle.net/KmXTy/1/.
I think what you are looking for though is ng-cloak. It hides ng elements until Angular is ready for them.
<div id="template1" ng-cloak>{{ 'hello' }}</div>
<div id="template2" ng-cloak class="ng-cloak">{{ 'hello IE7' }}</div>
See https://docs.angularjs.org/api/ng/directive/ngCloak.
Also, this may be helpful: Angularjs: How to display loading-icon when using 'resolve' in $routeProvider?.
I would like to apologize that I couldn't provide any code snippet regarding this question, I am a newbie about AngularJS.
<div ng-repeat="item in list" ng-view></div>
Using the code above, would it be possible to render different template which would be dependent on item.type property. I was expecting a result like this:
item.type == "image" returning: <div><img src="'IMAGE_URI'"></div>
item.type == "text" returning: <div><p>TEXT</p></div>
As of now I have create a template html for the enumeration of item.type. Is this concern possible using AngularJS? I've recently learned that ng-view accompannied with ng-route.
I think one way you can do it is to use 'ng-if' to conditionally include html:
<div ng-repeat="item in list">
<div ng-if="item.type == 'image'><img src="'IMAGE_URI'"></div>
<div ng-if="item.type == 'text'><div><p>TEXT</p></div>
</div>
You can have only one ng-view,
take a look at this answer.
from the documentation for ng-view:
ngView is a directive that complements
the $route service by including the rendered
template of the current route into the main
layout (index.html) file.
Every time the current route changes,
the included view changes with it according
to the configuration of the $route service.
Requires the ngRoute module to be installed.
What you're looking for is ng-include, combined with ng-switch,
take a look at this answer on how to combine the two.
ng-include creates a new child scope, which in turn inherits from the controller.
have a look at this answer for more information about the topic.
I am using this way:
<div ng-cloak>{{ message.userName || message.text }}</div>
Is this the only / best way to ensure the user does not see the {{ }} when AngularJS is still loading ?
There are several ways to hide content before Angular has a chance to run
Put the content you want to hide in another template, and use ngInclude
<div ng-include="'myPartialTemplate.html'"></div>
If you don't actually want another request made to the server to fetch another file, there are a couple of ways, as explained in the $templateCache docs. There are tools to "compile" external HTML templates into JS to avoid having to do this manually, such as grunt-angular-templates.
Similar to ngInclude, if you put everything in custom directives, with its own template, then the template content won't be shown until Angular has had a chance to run.
<my-directive></my-directive>
With a definition of:
app.directive('myDirective', function() {
return {
restrict: 'E',
template: '<div>Content hidden until Angular loaded</div>'
}
});
ngBind as an alternative to {{}} blocks
<div>Hello <span ng-bind="name"></span></div>
ngCloak as you have mentioned (in this list for completeness).
<div ng-cloak>Content hidden until Angular compiled the template</div>
But you must have certain styles loaded before the page is rendered by the browser, as explained in the ngCloak docs.
You can use ng-bind too as the documentation explains.
A typical advantage about ng-bind is the ability to provide a default value while Angular is loading (indeed, ng-cloak can only hide the content):
<p>Hello, <span ng-bind="user.name">MyDefaultValueWhileAngularIsLoading<span/></p>
Then as soon Angular is loaded, the value will be replaced by user.name.
Besides, ng-cloak is useful when dealing with blocks (many HTML lines) and ng-bind on a particular element.
I'm trying to use AngularJS built-in directives to achieve some simple JS effect without writing actual js code. It actually works pretty well, except the initial flash.
I know to deal with text, people should use ng-bind instead of {{}}
But how do you deal with directives like ng-if?
Here is my code:
<li ng-if="!magazines.resolved"> <!-- add "&& isOwner" when done -->
<dl>
<dt ng-model="changeToActivation" ng-init="changeToActivation=false" ng-mouseover="changeToActivation=true" ng-mouseleave="changeToActivation=false"><img ng-if="!changeToActivation" ng-src="<?php echo base_url('public/images/system_icons/add_magazine.jpg');?>">
<img ng-click="addMagazine()" id="activated" ng-if="changeToActivation" ng-src="<?php echo base_url('public/images/system_icons/add_magazine_activated.jpg');?>"></dt>
<dd class="magazineName">Create <br> A new magazine</dd>
<dd class="publishDate">Now!</dd>
</dl>
</li>
I know it gets a bit hard to read, but it's very easy. There is a model defined on <dt></dt> tag. If mouse is over this tag, the model value becomes true; when leaves, it becomes false.
Based on this boolean model value, one or the other image will be shown.
It works like a charm, but I can see both images at the very beginning, flashing!
How to deal with something like this then?
ngCloak may help, but you should also use ng-src for the actual image source, this will prevent your site from loading the image before the model has received a value. Also when using ngCloak, you may need to load the AngularJS source at the top of your html file as it may try to load the image before it knows what to do with the ng-cloak directive.
Applying ngCloak to you dt should do the trick for you: http://docs.angularjs.org/api/ng.directive:ngCloak
Here's an example from the docs. Note that it's added in two places- the directive as well as a class. The class is only needed for IE7 support.
<div id="template2" ng-cloak class="ng-cloak">{{ 'hello IE7' }}</div>