java script alert message

See more:

Javascript

Hi gud evng,

I have two text fields as application name and date field.The id's given for those are app_name,f_date_a.My doubt is i want to keep the validations for those two fields in the script.I have already kept the code for validation as below.

var app_name = document.getElementById('app_name').value;
                var date = document.getElementById('f_date_a').value;
                if(app_name==0)
                {
                    alert('Select Any One Application !!');
                    document.getElementById(app_name);
                    return false;
                }
                else if(date=='')
                {
                    alert('Date Mandatory !!');
                    document.getElementById(date);
                    return false;
                }
                else
                {
                    return true;
                }

It is displaying the alert message for application name.For date also it is displaying the message.But after clicking on the ok button it is not waiting for the date directly it is submitting.Can you give me the solution is there any thing wrong in my code.