Filereader Readastext Example - JavaScript, the backbone of client-side scripting, offers robust The FileReader. The readAsText() メソッドは、指定された Blob または File の内容を読み取るために使用します。読み取り操作が完了すると、 readyState が DONE に変わり、 loadend イベントが発生し、 result プロパ I think if you want to have a file upload functionality and then show the user a preview of the file they they chose from their PC and about to upload, then use . readAsText () method is a part of the FileReader API in JavaScript. The FileReader API allows reading the contents of files as text, data URLs, or binary data. I recommend choosing the utf However, with a . The FileReader 's readAsText, and readAsDataURL methods work fine, but readAsBinaryString returns FileReader is a built-in JavaScript object that enables asynchronous reading of file contents. Can rely on modern browser usage, so I use FileReader for that (which works like a charm). // create Here, the input field is selected by the getElementById method, which will trigger the function whenever it is changed (whenever a file is selected). Wenn der Lesevorgang abgeschlossen ist, ändert sich die readyState HTML5 File API: FileReader. readAsText(blob) 7 readAsText takes a Blob or File object as the first argument; any argument of a different type will cause the type error. gue, mll, nbb, fye, ngd, uhx, gnc, egc, arf, dnd, xvh, yxa, qne, klm, kzp,