angular - How to upload a CSV file and read them using angular2?

Question

i have a requirement of uploading a .CSV file and read them inside my component, i have gone through this blog but it has a .CSV file stored in a particular loaction, i want to upload the .CSV file and read them inside my component. How can i do it

Do we have any build in plugin which we can use? if not then how can we achieve this goal.

this is code which i have tried

view

<input type="file" name="File Upload" id="txtFileUpload" 
        (change)="changeListener($event)" 
        accept=".csv"/>

component

changeListener($event:Response): void {
    debugger;
   // i am not able to get the data in the CSV file
  }

in the changeListener(), i am not able tom get the content of the .CSV file, can anyone help me on this?

thank you

Answer 1

Upload your csv file to a location and get the csv file data. Please try this:-

Component.html:-

<input type="file" class="upload" (change)="changeListener($event.target.files)">

Component.ts:-

public changeListener(files: FileList){
  console.log(files);
  if(files && files.length > 0) {
     let file : File = files.item(0); 
       console.log(file.name);
       console.log(file.size);
       console.log(file.type);
       let reader: FileReader = new FileReader();
       reader.readAsText(file);
       reader.onload = (e) => {
          let csv: string = reader.result as string;
          console.log(csv);
       }
    }
}