Specifications

The File I/O API 279
Returns
true if the string is successfully written to the file, false otherwise.
Example
The following code attempts to write the string "xxx" to the mydata.txt file and displays an alert
if the write succeeds. It then tries to append the string "aaa" to the file and displays a second alert
if the write succeeds. After executing this script, the mydata.txt file contains the text
xxxaaa and
nothing else.
var fileURL = "file:///c|/temp/mydata.txt";
if (DWfile.write(fileURL, "xxx")){
alert("Wrote xxx to " + fileURL);
}
if (DWfile.write(fileURL, "aaa", "append")){
alert("Appended aaa to " + fileURL);
}