Java Script Null Check.

Java Script Null Check.

function isDefined(str)

{

    var isResult = false;

    str_temp = str + "";

    str_temp = str_temp.replace(" ", "");

    if(str_temp != "undefined" && str_temp != "" && str_temp != "null")

    {

        isResult = true;

    }

     

    return isResult;

}

출처 : http://ramses8.tistory.com/458