|
<HTML><HEAD><TITLE>Javascript with Forms</TITLE>
|
|
<SCRIPT LANGUAGE="JavaScript" >
|
|
<!-- A Conventional comment to hide JavaScript from old browsers
|
|
function compute(form) {
|
|
if( confirm("Is this what you want?"))
|
|
form.result.value = eval(form.expr.value);
|
|
else alert("Enter a new expression then!"); }
|
|
//scriptend-->
|
|
</SCRIPT></HEAD>
|
|
<BODY><FORM>
|
|
Enter An Expression:
|
|
<INPUT TYPE="text" NAME="expr" SIZE=15>
|
|
<INPUT TYPE="button" VALUE="DoIt!" ONCLICK="compute(this.form)">
|
|
<BR>Result:
|
|
<INPUT TYPE="text" NAME="result" SIZE=15>
|
|
<BR>
|
|
</FORM></BODY></HTML>
|
Addon