Sort the Index in Sidebar in Google Sheets - google-apps-script

Question

I am using below script to create a Sidebar in a Google Sheet. This sidebar is an Index of all non-hidden tabs (sheets) in this spreadsheet
I would like this Index sorted alphabetically.
function showSidebar() {
var ui = HtmlService.createTemplateFromFile('sidebar.html')
.evaluate()
.setSandboxMode(HtmlService.SandboxMode.IFRAME)
.setTitle('Index Sidebar');
SpreadsheetApp.getUi().showSidebar(ui);
}
function getSheetNames() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheets = ss.getSheets();
return sheetNamesIds(sheets);
}
function sheetNamesIds(sheets) {
var indexOfSheets = [];
sheets.forEach(function(sheet){
if(sheet.isSheetHidden()!= true)indexOfSheets.push([sheet.getSheetName(),sheet.getSheetId()]);
});
return indexOfSheets;
}
function returnListItems(text) {
var sheetNames = getSheetNames()
// Checking if there is a search term
if (text) {
sheetNames = sheetNames.filter(n => n[0].includes(text))
}
var htmlString = sheetNames.map(function(d) {
var string = `
<li>
<input
type="button"
value="${d[0]}"
onclick=\"google.script.run.setActiveByName('${d[0]}')\"/>
</li>
`
return string }).join(' ')
return htmlString
}
function setActiveByName(name) {
var ss = SpreadsheetApp.getActiveSpreadsheet().getSheetByName(name)
SpreadsheetApp.setActiveSheet(ss)
}
Any ideas how to..?

Answer 1

I believe your goal as follows.
You want to alphabetically sort the sheet names of the array from getSheetNames().
From I would like this Index sorted alphabetically., I thought that you want to achieve above.
In your case, I would like to propose the following modification for sheetNamesIds().
From:
function sheetNamesIds(sheets) {
var indexOfSheets = [];
sheets.forEach(function(sheet){
if(sheet.isSheetHidden()!= true)indexOfSheets.push([sheet.getSheetName(),sheet.getSheetId()]);
});
return indexOfSheets;
}
To:
function sheetNamesIds(sheets) {
var indexOfSheets = [];
sheets.forEach(function(sheet){
if(sheet.isSheetHidden()!= true)indexOfSheets.push([sheet.getSheetName(),sheet.getSheetId()]);
});
indexOfSheets.sort((a, b) => a[0] > b[0] ? 1 : -1); // Added
return indexOfSheets;
}
In this case, the sheet names are sorted with the ascending order.
Reference:
sort()