Date field Validation to restrict selecting past dates

[Rocky5]

Hi Experts,

I have written a onchange catalog client script on the "Start Date" variable to restrict users from not to select the past dates. The below is the code I am using, But the code is also triggering if the selected date is today's date (current date). All I need to is restrict user to not to select any date before current date. 

code: 

function onChange(control, oldValue, newValue, isLoading) {
if (isLoading || newValue == '') {
return;
}

//Type //get the entered date string
var enteredDate= g_form.getValue('start_date');
//get the current date/time
var rightNow = new Date().valueOf();
var dateToCheck = new Date(enteredDate).valueOf();
if (dateToCheck < rightNow)
{
//Display Error Message
g_form.addErrorMessage(getMessage('Select appropriate date'));
g_form.setValue('start_date','');
}
}

Any ideas on how to achieve this ? 

Thanks in advance,

Rocky.

[Priyanka Chandr]

Hi,

Use this below code

Script Include:

Name:DateValidation

Client callable: Checked

 var DateValidation = Class.create();

DateValidation.prototype = Object.extendsObject(AbstractAjaxProcessor, {

validateDate: function() {

  var ActualEndDate = this.getParameter('sysparm_end_date');

  return gs.dateDiff(gs.now(),ActualEndDate, true)/86400;

  },

      type: 'DateValidation'

});

Client Script:

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

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

              return;

      }

      var ga = new GlideAjax('DateValidation');

      ga.addParam('sysparm_name','validateDate');

      ga.addParam('sysparm_end_date',g_form.getValue('u_business_need_by_date'));//give your date field

      ga.getXML(ProcessResult);

     function ProcessResult(response) {

              var answer = response.responseXML.documentElement.getAttribute("answer");

              if (answer < 0)

                      {

                      g_form.clearValue('u_business_need_by_date'); //give your date field

                      alert('Business need date should not be in the Past.');

              }

      }

}

Kindly mark it correct and helpful

Thanks,

Priyanka