Using Google Sheets scripts, why does my if statement always return false when comparing cell values?

问题

I need to compare two cell values and act on them if they are different. My "if" statement always returns false when comparing the cell contents however, and I can't figure out why:

function onEdit() {
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var sheet = ss.getSheetByName('Sheet1'); // apply to sheet name only 
  var testvalues = sheet.getRange('A1:A2').getValues(); // array of values to be tested
  var testvalue1 = testvalues[0]; // The contents from A1
  var testvalue2 = testvalues[1]; // The contents from A2
  var test1 = testvalue1 == testvalue2; // True False test
  var test2 = testvalue1 === testvalue2;// True False test
  Browser.msgBox(testvalue1 + " and " + testvalue2 + " being the same is " + test1 + " and " + test2); // Sentence revealing outcome
};

test1 and test2 always return false no matter what the contents of cell A1 and A2 are (empty, number, text, different). If I edit the testvalues to this:

  var testvalue1 = "We are the same value";
  var testvalue2 = "We are the same value";

or

  var testvalue1 = testvalues[0];
  var testvalue2 = testvalues[0];

then suddenly the tests both return True as expected. Can anyone tell me what I'm missing in this, it's infuriating? Currently in A1 and A2 is the value 1 (before I potentially get asked about that).

The end goal is to use a border to partition different cell contents. I have the rest of it working perfectly but I've isolated the problem to the above concept.

Massively appreciate any help!

回答1:

Answer:

The .getValues() method returns a 2-dimensional array, and so you aren't referencing the values within each cell correctly in your array.

More Information:

Let's assume that both A1 and A2 contain the string "THIS". Running the following line:

var testvalues = sheet.getRange('A1:A2').getValues();

will assign the array [[THIS], [THIS]] to testvalues.

Code fix:

You need to change:

var testvalue1 = testvalues[0]; // The contents from A1
var testvalue2 = testvalues[1]; // The contents from A2

to:

var testvalue1 = testvalues[0][0]; // The contents from A1
var testvalue2 = testvalues[1][0]; // The contents from A2

I hope this is helpful to you!

References:

• Class Range | Apps Script - Method getValues()

回答2:

The following line of code is incorrect, below it is corrected.

  var testvalue1 = testvalues[0][0]; // The contents from A1
  var testvalue2 = testvalues[1][0]; // The contents from A2

You are originally grabbing the entire row instead of a single cell.

来源：https://stackoverflow.com/questions/61062937/using-google-sheets-scripts-why-does-my-if-statement-always-return-false-when-c