scripts to check variable is empty or not

[TMKAM]

I have create 2 variable as per below

variable A = multiline text

variable B - attachment

the above variable is not set as mandatory field and I would like to create a on submit scripts to check base on the below scenario

Scenario 1

Variable A = empty

Variable B = empty meaning no attachment

the script should alert with message when requester press order now button

Scenario 2

Variable A = not empty

Variable B = empty meaning no attachment

the script is not alert with message and requester can press order now button

Scenario 3

Variable A = empty

Variable B = not empty meaning got attachment inside

the script is not alert with message and requester can press order now button

thank you

[TMKAM]

@Amit Gujarathi 

thank you for the scripts and i receive an error when i try to save the scripts as attach

[Amit Gujarathi]

just put the code in the auto generated code from line 2 to line 10

[TMKAM]

@Amit Gujarathi 

sorry i dont really understand what you mean as i'm noob in scripting

thank you

[Ashwini Jadhao]

@TMKAM 

have you try below script:

function onSubmit() {

    //Type appropriate comment here, and begin script below

    var text = g_form.getValue("test_text");

    var attachment = g_form.getValue("attachment");

    if (text == '' && attachment == '') {

        alert("please add values to variables");

        return false;

    } else if (text = '' && attachment == '') {

        return true;

    } else if (text == '' && attachment != '') {

        return true;

    } else {

        return true;

    }

}

[TMKAM]

@Ashwini Jadhao 

thank you for the scripts but it still prompt an error message even i have attach the file Variable Attachment and if i enter the some text in Variable Text no error message appear which is correct

here are the scripts below for your reference

function onSubmit() {
//Type appropriate comment here, and begin script below
var text = g_form.getValue("u_describe_option_feature_request");
var attachment = g_form.getValue("u_attach_option_feature_request");
if (text == '' && attachment == '') {
alert("please add values to variables");
return false;
} else if (text != '' && attachment == '') {
return true;
} else if (text == '' && attachment != '') {
return true;
} else {
return true;
}

}