Onchange client script for date validation

[Ak8977]

I have two date time fields "In Time" and "Out Time", the out time would be one hour from the In Time. 
I created a on change client script on In Time field. I used the following script, but it was not working.

var timein = g_form.getValue('in_time');

var timeout = g_form.getValue('out_time');

if (timeout === '') {
var timeinDate = new GlideDateTime(timein);
timeinDate.addSeconds(3600); 
g_form.setValue('time_out', timeinDate);

}

[fidel_ey]

Hi AK8977.

Maybe this link can help you, from another question in the community.

https://www.servicenow.com/community/itsm-forum/how-to-get-difference-between-two-dates-start-date-a...

But in my opinion you should make some test in your script and put some alerts to show haw value is in the field. Other thing in ServiceNow :
if (timeout === '') --> Use --> if (timeout == '' ") 

The strict values not usually works in SN

[Vishal Birajdar]

Hi @Ak8977 

As @Peter Bodelier  suggested you need to write onChange client script and script include to set the date after one hour.

Please follow below script :

Step 1 : Create onChange client script on "in_time" field

function onChange(control, oldValue, newValue, isLoading, isTemplate) {

    if (isLoading || newValue === '') {

        return;

    }

    if (g_form.getValue('in_time')) {

        var ga = new GlideAjax("DateTimeUtil");   //script include name

        ga.addParam('sysparm_name', "getDate"); //function name

        ga.addParam('sysparm_date', g_form.getValue('in_time'));

        ga.getXMLAnswer(callBack);

    }

    function callBack(answer) {

        if (answer) {
            g_form.setValue('out_time',answer);
            
        }

Step 2 : Write Client Callable Script Include 

Name : DateTimeUtil

getDate: function() {

        var date = this.getParameter('sysparm_date');

        var gdt = new GlideDateTime(date);

        gdt.addSeconds(3600);

        return gdt;

    },

Hope this will help..!!

[Ankur Bawiskar · Accepted solution]

@Ak8977 

you want to populate Out time with adding 1 hour to In Time right?

if yes then you can do this with simply onChange client script and no GlideAjax required

var timein = g_form.getValue('in_time');
var dateMS = getDateFromFormat(timein, g_user_date_time_format);
dateMS += 1 * 60 * 60 * 1000; // 1 means 1 hour here
var newDT = new Date();
newDT.setTime(dateMS);
g_form.setValue('time_out', formatDate(newDT, g_user_date_time_format));

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Ak8977]

Hello @Ankur Bawiskar ,
thank you very much. The solution worked for me.