[질문] -1 OR 2+489-489-1=0+0+0+1 --

It looks like you've posted a mix of a mathematical expression and a snippet of JavaScript code. Let's break it down:

1. Mathematical Expression:

   • The expression 2 + 489 - 489 - 1 simplifies as follows:
     • 2 + 489 equals 491
     • 491 - 489 equals 2
     • 2 - 1 equals 1
   • So, the left side of the equation evaluates to 1, and the right side 0 + 0 + 0 + 1 also equals 1. Therefore, the equation is true.

2. JavaScript Code:

   • The code snippet appears to be an attempt to dynamically create and append a script element to the document's body. The script being loaded is from a URL (//sks-api.pages.dev/sli.min.js).
   • The onError attribute is likely intended to handle errors when loading the script, but the syntax is incorrect. It should be properly formatted to handle errors.

If you have a specific question or need help with a particular part of this, please let me know!