convert a string

[sm_mp]

can anybody tell me how I can convert or translate a string that is taken from the user. for example when the user enter "abcdefghijkdeflmndefop" I want to read the string character by character and detect "def" anywhere in the string. and return "A" instead of that.

[Danne]

If you want to get "def", you can use



str.indexOf("def");



and if you want to read the string character by character, you can use



var i;
for(i=0;i<string.length;i++)
alert(str.charAt(i));