2025 you will work on new way
 
Step 1.

 
 
 
Step 2.

 
 
 
Step 3.

 
 
 
Step 4.

 
 
 
 
Step 5.

 
 
 
Step 6.

 
 
 
 
Step 7.

 
 
 
Step 8.

 
 
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Old way before 2023, no longer work any more
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login my.esri or arcgis online first, then 
Step 1. go to 
https://developers.arcgis.com/dashboard/

 
 
 
 
Step 2. select javascript sdk

 
 
Step 3.

 
 
 
Step 4.

 
 
 
 
Step 5.

 
Step 6.

 
Step 7.

 
 
Step 8.
