check if text “begin with” substring in Actionscript 3

Question

How can I check if a text “begin with” substring in Actionscript 3 ??

Thanks a lot for help.

Answer 1

There is an indexOf method: documentation.

It returns the first index of where the given string appears in the string that is searched. If this is not equal to 0, it doesn't start with the string. You can make the following function yourself:

function startsWith(haystack:String, needle:String):boolean {
    return haystack.indexOf(needle) == 0;
}