Example: Using Javascript to access a form when there are multiple forms

Write an Article (form name attribute="submit_article")

Bookmark A Page (form name attribute="submit_bookmark")

Interacting between multiple forms

The code

function showFormElements(oForm) {
  var cnt = 0;
  var msg = "Form with 'name' attribute='" + oForm.name + "'";
  var str = "\nThe elements are: \n\n";
  for (i = 0; i < oForm.length; i++) {
  cnt ++;
  str += oForm.elements[i].tagName + " with 'name' attribute='" + oForm.elements[i].name + "'\n";
  }

  msg += " has " + cnt + " elements. \n" + str;
  alert(msg);
}

function showFormData(oForm) {
  var msg = "The data that you entered for the form with 'name' attribute='" + oForm.name + "': \n";
 
  for (i = 0; i < oForm.length, oForm.elements[i].getAttribute("type") !== 'button'; i++) {
    msg += oForm.elements[i].tagName + " with 'name' attribute='" + oForm.elements[i].name + "' and data: ";
    if(oForm.elements[i].value == null || oForm.elements[i].value == '') {
    msg += "NOT SET \n";
    } else {
      msg += oForm.elements[i].value + "\n";
    }
  }

  alert(msg);
}


function copyFormElementToElementOfDifferentForm(oForm1Name, oForm2Name, oForm1ElementName, oForm2ElementName) {

  var oForm1 = document.forms[oForm1Name];
  var oForm2 = document.forms[oForm2Name];
  var oForm1Element = oForm1[oForm1ElementName];
  var oForm2Element = oForm2[oForm2ElementName];

  if(oForm2Element.value == '') {
    oForm2Element.value += oForm1Element.value;
  } else {
    oForm2Element.value += ', ' + oForm1Element.value;
  }
}


Download the code here: javascript-forms-example-3.zip

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