Creating files using javascript

Just like the first method, the next step is to convert the array into a string data type and separate each data using the specified delimiter. At this point, we have succeeded in creating a CSV file using javascript. But some problems often occur, namely, when the data that converted to CSV has the same character as a delimiter. To overcome this problem, what I often do is get rid of unwanted special characters with the regex function.

For example, I want the character just string, number, and space only. I used to use the following function. After successfully writing CSV files using javascript, of course, we also want to read CSV files using javascript via the input form. There are several ways to read CSV files; you can create native javascript scripts to read CSV files or use the javascript plugin. Note: If you do not save the file, getScriptPath below will return an empty string.

Save the file as FolderExample. Note: if you do not save the file, getCurrentFolder below will return an empty string. Writing files using JavaScript and built-in extensions is straightforward: open the file for writing, write to a file and close a file. Optional Save the file as WriteFileExample. Save the file as DriveList. View the page using Internal Viewer or Internet Explorer. ShareName; else if x. I named this parameter localstorage. Via localstorage. In addition to defining the file name we attach a so-called object literal via getFile.

This literal contains one or more values telling its method what to do. The value create: true tells the method to create the file. A BLOB is a binary large object which is able to consist of random content such as text, images or other. To actually write contents to a file, the method getFile receives a third parameter as a function call.

This function carries the parameter DatFile. From here we call the method createWriter , which is responsible for filling the file with content. Now we write the BLOB to the file.

To remove a file from the filesystem we would correspondingly use remove. Although deleting does not require any additional information, the method stills expects a function. It can be left empty, though. Corresponding to getFile for files, we will use getDirectory for folders. The concept is the same.

We are able to create folders and delete them again:. Our example creates the folder named demo. Afterwards you could create a file in that given folder like so:.

Using the method moveTo allows you to move files from one folder to another. Then the method getDirectory defines the target directory and activates moveTo :. Besides moving files back and forth, moveTo is only there to rename files. To achieve this, call the method separately, i. As the created files and folders are stored to a protected area controlled by the browser, it is not possible to open them as usual by simple adding the file or folder names to the URL string.

Find centralized, trusted content and collaborate around the technologies you use most. Connect and share knowledge within a single location that is structured and easy to search. You have to specify the folder where you are saving it and it has to exist, in other case it will throw an error.

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