How to preview picture stored in the fake path in Angular 2/Typescript?

Question

Browsers don\'t take full path of local disc, instead they concatenate the filename with fakepath. Is there any way to access the file (image) from fakepath using typescript

Answer 1

It works when you change the event to type of any. In that way, Angular can access any of its property.

readUrl(event) {
if (event.target.files && event.target.files[0]) {
  var reader = new FileReader();

  reader.onload = (event:any) => {
    this.url = event.target.result;
  }

  reader.readAsDataURL(event.target.files[0]);
}

}

Answer 2

It's working

example.component.html

<input type="file" (change)="onFileChanged($event)" required />
<img [src]="imageShow" height="200"> <br/>

example.component.ts

imageShow: any= '';
onFileChanged(event) {
  this.file = event.target.files[0]
  var reader = new FileReader();
  reader.readAsDataURL(event.target.files[0]);
  reader.onload = (event) => {
   this.imageShow = (<FileReader>event.target).result;
 }

}

Answer 3

This should do what you want:

<input type='file' (change)="readUrl($event)">
<img [src]="url">

readUrl(event:any) {
  if (event.target.files && event.target.files[0]) {
    var reader = new FileReader();

    reader.onload = (event: ProgressEvent) => {
      this.url = (<FileReader>event.target).result;
    }

    reader.readAsDataURL(event.target.files[0]);
  }
}

Answer 4

Adding to @GünterZöchbauer answer, this wasn't working for me until I added this:

reader.onload = function(e:any){
   this.url = e.target.result;
}

Prior to adding 'any', I was getting the error:

property 'result' does not exist on type 'eventtarget'