This is originally from Web Teacher - go there to check it out and learn all about loops and working with text.

Type your word



Result:

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<HTML>
<HEAD>

<SCRIPT LANGUAGE="JavaScript">
<!-- Beginning of JavaScript -

function encode(text) { Ref="0123456789abcdefghijklmnopqrstuvwxyz.-~ABCDEFGHIJKLMNOPQRSTUVWXYZ"
Result=""
for (Count=0; Count<text.length; Count++) {

Char=text.substring (Count, Count+1);
Num=Ref.indexOf (Char);
EncodeChar=Ref.substring(Num+1, Num+2)
Result += EncodeChar
} document.form1.result.value=Result
}

// - End of JavaScript - -->
</SCRIPT>

</HEAD>
<BODY bgcolor="beige">


<FORM name="form1">
<table border=0><tr><td>
Type your word<td><INPUT NAME="input" TYPE=Text><br><td>
<INPUT TYPE=Button VALUE="submit" onClick="encode(this.form.input.value)"><tr><td>
Result:<td><INPUT NAME="result" TYPE=Text>

</table>
</FORM>
</BODY>
</HTML>