SP.ScriptUtility.isNullOrEmptyString(str) Method
Applies to: SharePoint Foundation 2010
In this article
Return Value
Remarks
Applies To
Gets a value that indicates whether the specified text is null , an empty string, or undefined.
var value = SP.ScriptUtility.isNullOrEmptyString(str);
Parameters
str
Type: String
The text to test.
Return Value
Type: Boolean
true if the specified text is null , an empty string, or undefined; otherwise, false.
Remarks
This method gets a value that indicates whether the text specified by the str parameter is null , an empty string, or undefined.