AS3 - Remove a section of a string using the character index - string

Question

I have a string, and I want to remove a specific section from it.
The situation is as follows:
var input:String = "The quick brown fox jumped over the lazy dog.";
var scrubStart:Number = input.indexOf("br");
var scrubEnd: Number = input.indexOf("la");
var output:String = input.substring(0,scrubStart) + input.substring(scrubEnd,input.length);
I have it set up like this because the input text is different every time, and the section I want to remove is in a different place every time, but the content of the section is the same.
The code I have doesn't work, and it returns everything after scrubStart. Where have I gone wrong?

Answer 1

Code from your question appears to operate as expected, resulting in:
The quick lazy dog.
This could be accomplished using string methods of either slice or substring.
Slice:
const input:String = "The quick brown fox jumped over the lazy dog.";
var output:String = input.slice(0, input.indexOf("br")) +
input.slice(input.indexOf("la"));
Substring:
const input:String = "The quick brown fox jumped over the lazy dog.";
var output:String = input.substring(0, input.indexOf("br")) +
input.substring(input.indexOf("la"));
Regex:
You could also implement regular expressions; although, by pattern instead of index.
const input:String = "The quick brown fox jumped over the lazy dog.";
var pattern:RegExp = /brown.*?the /;
var output:String = input.replace(pattern, "");