What does this do in javascript?

Question

I came across the function below in one of the SharePoint system javascript files.

function RTE_InsertImage(strBaseElementID)
{ULS1Lu:;
   //A bunch of javascript
}

I have never seen something like ULS1Lu:; in any of the javascript code I have worked with before. Does anyone know what this is doing?

Sorry the weak title on the question. I wasn't sure how else to phrase it.

Answer 1

Its a code label, technically they don't need the semicolon, but in javascript it shouldn't hurt. The label will allow a break or continue statement to jump the code back to it.

Most people consider that instead of labels it is better to use function calls whenever possible.