如何通過谷歌腳本更新谷歌驅動器文本文件？

Question

我想將Google腳本變量數據作爲文本文件存入Google驅動器，並通過Google腳本更新該文本文件規則！

下面的代碼創建一個文本文件並將數據寫入它。我想知道我以後如何更新文本文件？如果該文件是存在

function createTextFile() 
{ 

    name="testFile.txt"; 
    name2="testFolder"; 

    var content = "this is text data to be written in text file"; 

var dir = DriveApp.getFoldersByName(name2).next() 
var file = dir.createFile(name, content); 
} 

Answer 1

更新覆蓋的內容。

function saveData(folder, fileName, contents) { 
    var filename = "testFile.txt"; 

    var children = folder.getFilesByName(filename); 
    var file = null; 
    if (children.hasNext()) { 
    file = children.next(); 
    file.setContent(contents); 
    } else { 
    file = folder.createFile(filename, contents); 
    } 
} 

function test() { 
    var folders = DriveApp.getFoldersByName("testFolder"); 
    if (folders.hasNext()) { 
    var folder = folders.next(); 
    saveData(folder, "testfile.txt", "HelloWorld"); 
    saveData(folder, "testfile.txt", "Welcome"); 
    } 

}