javascript - script tag in angular2 template / hook when template dom is loaded

Question

I'm pretty stuck and don't know how to solve my problem...

Simplified: I have a component that creates a ulist based on a binding, like this:

@Component({
   selector: "template",
   template: `
     <ul>
       <li *ng-for="#challenge of jobs.challenges">{{challenge}}</li>
     </ul>
   `})
export class JobTemplate{
  jobs: Jobs;
  constructor(jobs:Jobs){
    this.jobs = jobs
  }     
}

The component selector/host is embedded in normal html flow echoed by php and is used to replace a predefined ulist. The problem is that on the normal site, a script tag after the ulist was used to apply some jquery magic on the list.

Since the script tag is echoed out before the template of my component has finished loading, the jquery calls won't find the elements of my template DOM. Putting the script tag inside my template (at the end) does not work; it simply seems to get ignored.

<ul>
  <a><li *ng-for="#challenge of jobs.challenges">{{challenge}}</li></a>  
</ul>
<script>
   $("ul a").on("click", function (event)
        {
        var parent = $(this).parent();
        if(parent.hasClass('active'))
          ....slideToggle("normal");
        else
        ....
        });
</script>

Also the site uses the foundation framework, and each time a new element is added to the page (e.g through the binding of my component being updated externally) I need to call $(document).foundation().

So my question is, how can I achieve to call jquery on my template DOM, when I don't know if my template has finished being created. The onload handler doesn't work either when defined in my component template.

I have read about AfterViewInit, but I'm kind of overwhelmed with it. Could someone please push me in the right direction?

How can I find out when the template of my component has been fully inserted into the "main" DOM?

Answer 1

Script tags in component templates are removed. A workaround is to create the script tag dynamically in ngAfterViewInit()

See also https://github.com/angular/angular/issues/4903

constructor(private elementRef:ElementRef) {};

ngAfterViewInit() {
  var s = document.createElement("script");
  s.type = "text/javascript";
  s.src = "http://somedomain.com/somescript";
  this.elementRef.nativeElement.appendChild(s);
}

See also https://stackoverflow.com/a/9413803/217408

A better way might be to just use require() to load the script.

See also script tag in angular2 template / hook when template dom is loaded