angular - Angular2: load external javascript to component dynamically -


i trying load external library (javascript) angular2 component (typescript).

take example: https://github.com/fengyuanchen/cropperjs

my approach:

index.html

<head>    <link href="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/0.8.1/cropper.css" rel="stylesheet">    <script src="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/0.8.1/cropper.js"></script> </head>

mycropper.js

window.addeventlistener('domcontentloaded', function () {  var image = document.queryselector('#image');  var cropper = new cropper(image, {     viewmode: 3,     dragmode: 'move',     autocroparea: 1,     restore: false,     modal: false,     guides: false,     highlight: false,     cropboxmovable: false,     cropboxresizable: false,     toggledragmodeondblclick: false,   });  });

photo.component.ts

@component({ selector: 'photo-crop', template: `     <div class="row">       <img id="image" src="http://img01.ibnlive.in/ibnlive/uploads/875x584/jpg/2015/09/new-google-logo-010915.png" class="img-responsive"/>     <div class="row">     `, styles: [] }) export class photocomponent {  public ngoninit() {     this.loadscript('src/assets/js/mycropper.js');                }); }  public loadscript(url) {     console.log('preparing load...')     let node = document.createelement('script');     node.src = url;     node.type = 'text/javascript';     document.getelementsbytagname('head')[0].appendchild(node);  } }

problem: image loaded without zoom/crop effect. inspected page , saw script added correctly in . refreshed page, no luck. had no error @ all. seems angular2 not activate script.

i tried workaround: putting script in index.html directly (this workaround return error when page not loaded yet)

<head>   ...   <script src="src/assets/js/mycropper.js"></script> </head>

photo loaded without zoom/crop effect @ start. after refresh page, zoom/crop effect activated. not practice scripts kept in index.html, @ least script works after refresh.

any suggestion appreciated.


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