Clear page button- yes and cancel?

Question

Hi all, I'm just learning javascript and could use some help.  I have an Acrobat PDF form with a clear page button on the top.  When the user clicks the button, I would like an alert to popup that says "Are you sure you wish to clear the page?".  If the user clicks "Yes", the page clears.  If the user clicks "No", the alert disappears and nothing else happens.  I don't know how to get the cancel button to work, but everything else works fine.  Here's my code:
var clearbutton = app.alert({
cMsg: "Are you sure you wish to clear the page?",
cTitle: "Clear Page?",
nIcon: 2, nType: 1
var iPage = pageNum;
var sFields = new Array();
for(var x=0;x<numFields;x++)
{var pg = getField(getNthFieldName(x)).page;
if((typeof pg == 'number' && pg == iPage) || (typeof pg != 'number' && pg.indexOf(iPage) > -1))sFields[sFields.length] = getNthFieldName(x);}
if(sFields.length > 0)resetForm(sFields);
How do I associate the cancel button (return of 2) with not continuing with the rest of the script? Thanks to anyone who can help out!!

Answer 1

Try;
function ClearPage() {
var clearbutton = app.alert({
cMsg: "Are you sure you wish to clear the page?",
cTitle: "Clear Page?",
nIcon: 2, nType: 1});
if (clearbutton == 1) {
   // "OK" selected
   var iPage = this.pageNum;
   var sFields = new Array();
   var pg;
   // loop through all fields and find fields on page
   for(var x=0; x < numFields; x++){
      pg = this.getField(getNthFieldName(x)).page;
      if((typeof pg == 'number' && pg == iPage) || (typeof pg != 'number' && pg.indexOf(iPage) > -1))
         sFields[sFields.length] = getNthFieldName(x); // fill array of field names
   } // end for loop numFields
   // clear the field names
   this.resetForm(sFields);
} // end if 'OK"
// if anything other than "OK" nothing done
return;
} // end ClearPage funciton
// call the ClearPage function
ClearPage();