如何在此示例代码中正确使用JSON.parse（字符串到数组）？

Question

I'm trying to store an array in StriptProperties converting it to a string and recovering this way:

var personDataArr = ["Adam", "male", "programmer"];
function myFunction() {
  var personDataStr = JSON.stringify(personDataArr);
  ScriptProperties.setProperty('personData', personDataStr);
  var personData = ScriptProperties.getProperty('personData');
  personData = JSON.parse("[" + personData + "]");
  Logger.log("personData[0] = " + personData[0]);
}

But when I log Logger.log("personData[0] = " + personData[0]); I get personData[0] = Adam,male,programmer instead of Adam . Why? How to get, instead, the first element of the array?

Answer 1

You need to remove square brackets ( [] ) from JSON.parse function:

personData = JSON.parse( personData );

This happens because you create multidimentional array ant it looks in final result as:

[["Adam", "male", "programmer"]]

This is why 0 index of that array return Array for you and not Adam value