问使用viewChild读取输入

EN

constructor() {
    this.reader = new FileReader();
    this.reader.onloadend = this.fileLoaded;
}

fileChosen($event){
    const file file = event.srcElement.files[0];
    // Read the file type with file.type
    // Read the file size with file.size

    // Read the file with:
    // this.reader.readAsArrayBuffer
    // this.reader.readAsText
    // this.reader.readAsDataURL
}

fileLoaded() {
    // You can access the uploaded file with 'this.reader.result'
}