How do I use the 1st character match using ^ in GAS?-CodePudding

I am trying to match the 1st character using regex in GAS. When I insert ^, the code doesn't work.If my id is "DEL", then I need words starting with "D", when id is "DEL" then all words strarting with "DEL".

function getAirportMatch(e) {
 
  
  var airportlist = "`DELHI VIDP, MINDELIHM HEID, DELHI VIDD, LIHELD HDEL";
  var id = "DEL";
var regExp = new RegExp("^(?:" id ")","gm"); // "i" is for case insensitive
var airport = regExp.exec(airportlist);
Logger.log(airport);````

CodePudding user response：

To match terms starting with something, use word boundary \b and matching everything up to the next comma (or end, which ever comes first):

"\b" id "[^,]*"

CodePudding user response：

If you simply want to see which airport names start with DEL you can simply make use of the startsWith method:

var airportlist = "DELHI VIDP, MINDELIHM HEID, DELHI VIDD, LIHELD HDEL";
var airportarray = airportlist.split(', ');
var id = "DEL";
airportarray.forEach(e => {if (e.startsWith(id.toString()))console.log(e)})

The snippet above creates an array with all the airport names and then checks if any of them start with the id you have supplied.

Reference

String.prototype.startsWith().