<s>[INST] The milliseconds field in the RWebRequest brackets the values into ranges. First, it grabs the integer part from the whole number representing the number of milliseconds, and then it takes that integer and converts it to a URL-friendly format (Percent encoding).


Here is some C# code:
```csharp
int milliseconds = (int)((DateTime.Now - WOW Goldberg.Request.StartTime).TotalMilliseconds);
someString = string.Concat("%", Convert.ToString(milliseconds, 16)) ;
```
The job of this code is to make sure the milliseconds value will fit within the RWebRequest brackets correctly.


I want to use JavaScript to complete a similar task. How can I achieve it?[/INST]