I am trying to set innerHTML in a div but the directive used in the text is ignored. I am not sure if it is a invalid attribute(according to HTML) So below is my code:
<table class="table">
<tbody>
<tr>
<td>
<div [innerHTML]="issue.longText"></div>
</td>
</tr>
</tbody>
</table>
the value of issue.longText in component.ts is:
<ul><li>20/07/2018 - Hello!This is the test issue on click on it(<span [issueOpener]='{"recordId": 4, "page":1}'>link</span>)</li></ul>
And when I inspect the div I've got the following:
<ul><li>20/07/2018 - Hello!This is the test issue on click on it(<span>link</span>)</li></ul>
Directive issueOpener is removed from the span. So how can I prevent this directive? Any help would be greatly appreciated.
This is wanted behavior and here is why : when you write Typescript code, you aren't writing your final application. Your code needs to be compiled first.
To be compiled, your code goes through a process ran by the CLI : during this process, the compiler replaces every piece of Angular code with valid JS code.
This means for instance, that (click) event become onclick (This one's not entirely true, but that pictures the point I'm making).
When you use innerHtml, you write final code : it won't be compiled. It's not Angualr code, so it won't work like you hoped.
Ajay you can do one thing and that will surely work in your case.
Please refer following link:-
Angular 5 - How to call a function when HTML element is created with *ngFor
You can write logic on ngAfterViewInit() that should be responsible for adding directive at the HTML which is now loaded so that directive can be added dynamically.
Refer:-
How to dynamically add a directive?
Related
I'm setting HTML returned from the API in my Angular component:
<div [innerHTML]="content"></div>
content in this example is something like this:
<table>
<tr>
<td>[audioPlayer:file.mp3]</td>
</tr>
</table>
Now I would like to inject the actual component inside the table cell.
If I make a certain container, I can create the component with createComponent:
audioPlayerComponentRef: ComponentRef<AudioPlayerComponent>;
#ViewChild('placeholder', { read: ViewContainerRef }) container;
const factory: ComponentFactory<AudioPlayerComponent> =
this.componentFactoryResolver.resolveComponentFactory(AudioPlayerComponent);
this.audioPlayerComponentRef = this.container.createComponent(factory);
Then I can inject it into a container in the template:
<div #placeholder></div>
However, going back to my original goal, I can't use such a container, as the component needs to be injected into a specific position into an innerHtml block.
I've been brainstorming all day, but I can't see any way to achieve this.
Generally speaking, this is contrary to the way Angular works. [innerHTML] is not parsed for any Angular functionality. No component selectors or even a ViewContainerRef can be found there. Rather, even remotely suspicious HTML, CSS and JS is removed as a security measure as Angular only trusts its own templates.
So InnerHTML is a no-go. But I was in the same boat myself and have written a library to solve this exact problem. With it, you can freely load dynamic components into strings without compromising security. If you're still stuck on this, you might wanna have a look at it.
I am new to Angular and have run into a problem that seems to have a javascript work around but they aren't very elegant.
I have a model with an array property. I ngfor the list property to build some html selection options. This is all working nicely. The problem comes when I am trying to set default value...the html elements don't have a load event.
I tried numerous html elements and they don't appear to have a load event either but I certainly could be doing it wrong.
I have seen a solution to put javascript tag right after the html and I could do that but I was really looking for a more elegant way in Angular.
I saw this SO post and thought that was my answer but there is a warning given that I agree with and thus it doesn't appear to be a good solution.
Regardless I tried it just to see if it would work and I got:
Failed to execute 'setAttribute' on 'Element': '{{loadDefaults()}}' is not a valid attribute name
<span {{loadDefaults()}} ></span>
So how can I fire an AS2 function in the component to load the default values?
HTML (btw this is NOT a full page load so there is no body tag):
<tr>
<td *ngFor="let loc of locOptions;">
<span>{{loc.text}}</span>
<input type="radio" name="radiogroup" [value]="loc.value" (change)="onSelectionChange(loc.value)">
</td>
</tr>
Edit
I thought perhaps mistakenly that ngoninit would fire too soon...before the html elements are rendered.
So perhaps what is being suggested is that I add a boolean is default to the model and bind THAT as the element is rendered.
In your ngonit function set this.locOptions to your default values. The value can be changed later on in any function and the change will be reflected in the view. Hope this helps you.
You should use ngOnInit to init you data, and call retrieve your data from your component :
defaults : any;
ngOnInit {
this.defaults = loadDefaults();
}
loadDefaults() {
//get data
}
HTML :
<span>{{defaults}}</span>
I have written my own table module. Calling it in HTML code looks like this:
<my-table [data]="variableWithArr"></my-table>
Now, pretty nice table is being displayed. Cool. But what if I want to have a progress bar in some column of table? I thought that I could put a HTML code with component selector as value, for example bootstrap progressBar, like this:
for(let record of variableWithArr) {
record[0] = '<ngb-progressbar type="danger" [value]="100"></ngb-progressbar>';
}
Unfortunatelly, Angular displays only a HTML code but dooes not interpret it as component selector, so I receive something like that in DOM:
<td><ngb-progressbar type="danger" [value]="100"></ngb-progressbar></td>
How to fix it?
This is not how Angular works - you can't insert arbitrary HTML (innerHTML or otherwise) and expect that directives will be picked up & applied. Making Angular work this way would require shipping entire compiler to a browser and would defeat the whole purpose of all the great optimizations that can be done with the ahead-of-time (AOT) compilation.
tl;dr; nope, you can't do this and this has nothing to do with the ng-bootstrap project, but rather with design decisions behind Angular.
By looking at the docs you need to use the property [innerHTML], but to be clear only use it when you trust the code!!
So should be something like this:
<td [innerHTML]="record"></td>
I have a simple image viewer webpage on gitpages but before I push the next group of images I want to condense all of my images into an array using angular.
The test I have made here uses only 4 photos that are in the same folder as every other file.(they are jpegs)
my js file is set up like this with a factory for the array and a controller.
angular.module('beamModule',[])
.factory('imageFactory', function(){
return {
getImages: function(){
return ['beam1.jpg','beam2.jpg','beam3.jpg','beam4.jpg'];
}
}
})
.controller('Photos', function(imageFactory){
this.images = imageFactory.getImages();
});
I don't think anything is wrong with this array but maybe I am overlooking something?
The HTML that I am using and the section that is giving me trouble when I check the developer tools is below.
<div class="imgcontainer" ng-controller="Photos as photosController">
<img ng-repeat="src in photosController.images"
ng-src="beamModule.js/{{images}}">
</div>
I am not sure if I am supposed to be using an ng-class attribute in the css or if there is something else that needs removed?
The developer tools are returning this value for each of the images (they are repeating just not showing)
<img ng-repeat="src in photosController.images" class="ng-scope">
Why is the ng-scope class being put in here and the ng-src is being removed?
EDIT FIXED
Ok to the person who answered so quickly and simply you are the real mvp here.
You said to change the ng-src="beamModule.js/{{images}}" to read {{src}} instead.
Once I tried this it still didnt work but then I checked the dev tools and noticed it was attempting to pull the files from the js file and not the actual file so I just changed it to this and now it works great! Thank you.
ng-src="{{src}}"
The ng-src attribute needed to point to the repeat instead of the js file.
ng-src="{{src}}"
I am working on converting a html to angular js and one of the issue i have is, a button on the page uses ID and based of that id there is a div class that runs set of texts to be displayed accordingly.
Code that we have is something like this.
Continue
From the HTML page when the user clicks on the button continue... below code will be executed.
<div class="ContinueClicked">
text.......
</div>
I am trying to figure out a way to see how i can make it work with angular js. So when the user is clicking on the continue button, the page should display the content in div continueClicked. Should i be using any directive here? please help.
You have to adhere to AngularJS principles and conventions. Angular uses Directives for most of the DOM transformations, and Bindings for constant DOM and Model updates (two-way data bindings.)
In your case scenario you might want to have the following DOM elements (inside a Controller inside an ng-app Module, see AngularJS docs):
<!-- The button with the event handler as ng-click directive -->
<button ng-click="isContinue = true">Show continue content</button>
<!-- The content wrap with ng-show directive -->
<div class="ContinueClicked" ng-init="isContinue = false" ng-show="isContinue">
My content to be shown
</div>
You can also read and practice basic concepts following the Angular Tutorial.