sample code to validate a web address using javascript how to validate a web address enterredin a text box
I would use a Regular Expression:
function isURL(x) { return REFindNoCase("^(((https?:|ftp:|gopher:)\/\/))[-[:alnum:]\?%,\.\/&##!@:=\+~_]+[A-Za-z0-9\/]$",x) NEQ 0; }