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kiran.kumari@intellectdesign.com (Unlicensed)

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Canvas enables the developer to mark the item as mandatory or conditional mandatory enabling the developer to effectively handle user input.

Mandatory Text

ConditionalMandatory Text

The Mandatory Text indicates that an item is mandatory. The end-users must enter the values for those items marked with Required Indicators.
These fields will be marked with a red asterisk (*) symbol.

The Conditional Mandatory Text indicates that an item is conditionally mandatory. The users will have to enter values based on a condition.
These fields will be marked with double blue asterisk (**) symbols.
The developers can write the conditions and the forms behavior in the cbxprevalidate handler.

...

Code Block
languagejava
this.fm.registerHandler("cbxprevalidate", function(fm, config)
	{ 
		//fm.getValue API is used to get the value of particular field.
		if(fm.getValue("CHK_PROCEED_WOUT_MESG")=='Y') 
			{ 
				//This API is used to marks a invalid field as Valid.
				fm.clearInvalid("TXT_MESSAGE_DESC"); 
				return [true, true];
			}
		else {
				//This API is used to marks a invalid field as Valid.
				fm.markInvalid("TXT_MESSAGE_DESC", "Please, Enter the message");
				return false;
			}
});

For more details of form APIs, see Form and Form Item APIs.