User Guide

434 Chapter 12: Methods
Parameters
stringExpression1
Required. Specifies the sub-string to search for in stringExpression2.
stringExpression2 Required. Specifies the string that contains the sub-string
stringExpression1.
Example
This statement displays in the Message window the beginning position of the string “media”
within the string “Macromedia”:
put offset("media","Macromedia")
The result is 6.
This statement displays in the Message window the beginning position of the string “Micro”
within the string “Macromedia”:
put offset("Micro", "Macromedia")
The result is 0, because “Macromedia” doesn’t contain the string “Micro”.
This handler finds all instances of the string represented by
stringToFind within the string
represented by
input and replaces them with the string represented by stringToInsert:
-- Lingo syntax
on SearchAndReplace input, stringToFind, stringToInsert
output = ""
findLen = stringToFind.length - 1
repeat while input contains stringToFind
currOffset = offset(stringToFind, input)
output = output & input.char [1..currOffset]
delete the last char of output
output = output & stringToInsert
delete input.char [1.. (currOffset + findLen)]
end repeat
set output = output & input
return output
end
// JavaScript syntax
function SearchAndReplace(input, stringToFind, stringToInsert) {
output = "";
findLen = stringToFind.length - 1;
do {
currOffset = offset(stringToFind, input);
output = output + input.char[0..currOffset];
output = output.substr(0,output.length-2);
output = output + stringToInsert;
input = input.substr(currOffset+findLen,input.length);
} while (input.indexOf(stringToFind) >= 0);
output = output + input;
return output;
}
See also
chars(), length(), contains, starts