Question

148

how to check document.getElementbyId contains null or undefined value in it?

rated 0 times [ 153] [ 5] / answers: 1 / hits: 32041 / 11 Years ago, thu, june 20, 2013, 12:00:00

if(typeof    (document.getElementById(courseId).value!==undefined) || document.getElementById(courseId).value!==null)

    {

        Courseid = document.getElementById(courseId).value;

    }

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answered 11 Years ago johnniejarend · Accepted Answer

rewrite it that way:

if(document.getElementById(courseId) && document.getElementById(courseId).value)

{

    CourseId = document.getElementById(courseId).value;

}