Stump the Panel Topic: Set a field mandatory with javascript on onChange event

Stump the Panel Topic: Set a field mandatory with javascript on onChange event http://www.endusersharepoint.com/STP/ SharePoint QA en Fri, 28 Aug 2009 05:18:25 +0000 AutoSponge on "Set a field mandatory with javascript on onChange event" http://www.endusersharepoint.com/STP/topic/set-a-field-mandatory-with-javascript-on-onchange-event#post-980 Sun, 31 Aug 2008 22:56:18 +0000 AutoSponge 980@http://www.endusersharepoint.com/STP/ This may not use C# but it looks more like the validation done on the MOSS forms because it uses a new span above the text box instead of an alert pop-up: <pre><code><script type="text/javascript"> function PreSaveAction() { var findDate = getTagFromIdentifierAndTitle("input","DateTimeFieldDate","Due Date"); var findText = getTagFromIdentifierAndTitle("textarea","","Test"); var txt = document.createElement("span"); txt.className = "ms-formvalidation"; if(findDate.value != "" && findText.value == "") { txt.appendChild(document.createTextNode("You must provide a Justification for the Due Date")); txt.id = "val1"; if (document.getElementById("val1")){ }else{ findText.parentNode.insertBefore(txt, findText); } return false; // Cancel the item save process } return true; // OK to proceed with the save item } function getTagFromIdentifierAndTitle(tagName, identifier, title) { var len = identifier.length; var tags = document.getElementsByTagName(tagName); for (var i=0; i < tags.length; i++) { var tempString = tags[i].id; if (tags[i].title == title && (identifier == "" || tempString.indexOf(identifier) == tempString.length - len)) { return tags[i]; } } return null; } //--> </script></code></pre> spykew on "Set a field mandatory with javascript on onChange event" http://www.endusersharepoint.com/STP/topic/set-a-field-mandatory-with-javascript-on-onchange-event#post-952 Thu, 28 Aug 2008 16:34:14 +0000 spykew 952@http://www.endusersharepoint.com/STP/ Hi again, You are totally right, I forgot to mention that on the previous post. Anyway thanks for your help, maybe help others in a similar situation. Cheers, Roger AutoSponge on "Set a field mandatory with javascript on onChange event" http://www.endusersharepoint.com/STP/topic/set-a-field-mandatory-with-javascript-on-onchange-event#post-950 Thu, 28 Aug 2008 15:15:23 +0000 AutoSponge 950@http://www.endusersharepoint.com/STP/ spykew, I'm sorry. When you said "I think I can use a similar approach." I thought you meant you wanted to use js. I'm not a developer, so I don't know C#. Good luck. spykew on "Set a field mandatory with javascript on onChange event" http://www.endusersharepoint.com/STP/topic/set-a-field-mandatory-with-javascript-on-onchange-event#post-949 Thu, 28 Aug 2008 13:06:20 +0000 spykew 949@http://www.endusersharepoint.com/STP/ Hi AutoSponge, Thanks for you help. I have a similar script that does the same thing, but I want to avoid that kind of notification through javascript windows. I would like to use the sharepoint built in validation like "throw new SPFieldValidationException("Exception Text");" in C#. I just want to know if there's a way of access this functionality by javascript. Thanks, Roger AutoSponge on "Set a field mandatory with javascript on onChange event" http://www.endusersharepoint.com/STP/topic/set-a-field-mandatory-with-javascript-on-onchange-event#post-948 Thu, 28 Aug 2008 12:50:29 +0000 AutoSponge 948@http://www.endusersharepoint.com/STP/ spykew, This script will only work while Justification is a "Plain Text" field. <pre><code><script type="text/javascript"> function PreSaveAction() { var findDate = getTagFromIdentifierAndTitle("input","DateTimeFieldDate","Due Date"); var findText = getTagFromIdentifierAndTitle("textarea","","Justification"); if(findDate.value != "" && findText.value == "") { alert("You must provide a Justification for the Due Date"); return false; // Cancel the item save process } return true; // OK to proceed with the save item } function getTagFromIdentifierAndTitle(tagName, identifier, title) { var len = identifier.length; var tags = document.getElementsByTagName(tagName); for (var i=0; i < tags.length; i++) { var tempString = tags[i].id; if (tags[i].title == title && (identifier == "" || tempString.indexOf(identifier) == tempString.length - len)) { return tags[i]; } } return null; } //--> </script></code></pre> spykew on "Set a field mandatory with javascript on onChange event" http://www.endusersharepoint.com/STP/topic/set-a-field-mandatory-with-javascript-on-onchange-event#post-946 Thu, 28 Aug 2008 11:22:31 +0000 spykew 946@http://www.endusersharepoint.com/STP/ Hi, I want to set a field mandatory if another field was selected through javascript. My scenario: I have a task list with a due date. I want to ensure that if that due date is filled by the user he must fill a justification text field. The due date is not mandatory so I can't set the field "Justification" to always mandatory. I'm already using a webpart with javascript code in it to hide some fields on EditForm.aspx page, I think I can use a similar approach. Any help available? Thanks in advance, Roger