However, if I want to get the content of the file, what approach do I need to follow? My main goal is to append the content of the file like this formData.append('firstfile', fileInputElement) and send the formData object via JSON. It’s encoded and sent out with Content-Type. It will use memory mapping techniques if supported by your OS to. It will use memory mapping techniques if supported by. filegetcontents() is the preferred way to read the contents of a file into a string. filegetcontents() is the preferred way to read the contents of a file into a string. On failure, filegetcontents() will return false.

The following single line of javaScript code, help you to get the file name, size, type, and modified date. This function is similar to file(), except that filegetcontents() returns the file in a string, starting at the specified offset up to length bytes.

Using JavaScript you can easily get the file info and validate in client-side. The special thing about this is that network methods, such as fetch, can accept a FormData object as a body. Before sending the file to the server for upload, it always a good idea to validate the file. options optional object: lastModified the timestamp (integer date) of last modification. There are several approaches to upload a file without using the form in JavaScript: Approach 1: This approach is to use FormData that can upload a file without using any kind of form. The line var fileInputElement = document.getElementById('fileOne') gets me the name of the file. First, there’s a constructor, similar to Blob: new File( fileParts, fileName, options) fileParts is an array of Blob/BufferSource/String values. I am wondering how can I get the content of the file.

Js get file content