How to encode and decode image to base64 to save server in angular 2

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want to encode the uploaded files to base64 so that I can pass them to the request. The problem is that I'm using Angular 2 with Typescript and I couldn't find any info on how to do that. I found that in Javascript it can be done with canvas but I don't know how could I implement the code in Typescript. Even I need to know how to bind the coming base64 image in html please help me

What I have tried:

I am getting all other json data except base64.i need to bind it as an image.same way i need to post also

my html here ,user can uplod image here as jpeg

<input type="file" id="taxname" [(ngModel)]="spam.ImageData" class="form-control browse" value="Browse">

while binding am getting base64 only,how to convert this?. with in one api i neeed to get

<td>
                 <span>{{ m.ImgeData }}</span>


             </td>

how can i archive this?

Posted 26-Jul-17 4:14am

Manidas Payyoli

Updated 23-Mar-18 9:48am

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Cool Webpro · Answer 1 · 2018-03-23T09:49:00

<input type="file" class="form-control browse" ngModel (change)="getFiles($event)">

 getFiles(event) {
     this.files = event.target.files;
     var reader = new FileReader();
     reader.onload = this._handleReaderLoaded.bind(this);
     reader.readAsBinaryString(this.files[0]);
 }

 _handleReaderLoaded(readerEvt) {
     var binaryString = readerEvt.target.result;
     this.filestring = btoa(binaryString);  // Converting binary string data.
}