| <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> |