Could you point how to correctly validate if the time before the date/ time filled on the textbox is greater or equal 03 hours?

Hi @Julian

The code runs at front-end.
I'm looking your solution, but the working sample is missed.

Sorry Eduardo,

The link text was overwritten in my original post  I have fixed the post and posted the URL here again

http://www.marcorpsa.com/ee/t3504.html

Hi @Julian

The server where the example runs seens not working out today.
Could you give a look?

Ok. Now.

Could you check what is going wrong on my case?

Adapted to my case

function pre_salvar_captacao_tit(validaAnteriores) {
  try {
    
    
      var now = Date.now();
      var d1 = document.getElementById('dpremarcada_ida_stacasa').value;
      var t1 = document.getElementById('horario_premarcada_ida_stacasa').value;   


      var formtime = new Date(d1 + ' ' + t1);

      console.log('XXXX');
      console.log(now);
      
      console.log(d1);
      console.log(t1);
      
      console.log(formtime);
      
      
      
     if (  ( (formtime.getTime() - now) / 3600000)   < 3   )   {
            alert('Agendar com no mínimo 03 horas de antecedencia');
     }      
     else
     {
         alert('Agendar com no mínimo 03 horas de antecedencia');
    }

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 alert('Agendar com no mínimo 03 horas de antecedencia');  is always fired  even if the hour is later than 03 hours.

I just tested your code in my sample and it seems to work fine.

You can see it working here

.... but then I did notice that your Alerts have the same message

if (  ( (formtime.getTime() - now) / 3600000)   < 3   )   {
  alert('Agendar com no mínimo 03 horas de antecedencia'); // HOW IS THIS 
}      
else {
  alert('Agendar com no mínimo 03 horas de antecedencia'); // DIFFERENT FROM THIS ??????
}

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Sorry

     if (  ( (formtime.getTime() - now) / 3600000)   < 3  )   {
            alert('Agendar com no mínimo 03 horas de antecedencia');
     }      
     else
     {
         alert('Agendamento OK');
    }

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Even if the time difference is lower than 3 hours
alert('Agendamento OK');
is fired.

I don't know why the console stoped running.

The value is never <3

     console.log('h1');
      var h1 = (formtime.getTime()) / 3600000
      console.log(h1);
            
      console.log('h2');
      var h2 = ( now) / 3600000
      console.log(h2);             
       

      var teste = (formtime.getTime() - now) / 3600000
      console.log('Teste');
      console.log(teste);
      
      
     if (  ( (formtime.getTime() - now) / 3600000)   < 3  )   {
            alert('Agendar com no mínimo 03 horas de antecedencia');
     }      
     else
     {
         alert('Agendamento OK');
    }

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If you look at my latest sample - it implements your function AND mine - yours is called after. As you can see from that sample it works.

So this is probably something on your side that you are not showing here?

Really.

I don´t know why the date/ time is converted 3 hours later...

JS:

function pre_salvar_captacao_tit(validaAnteriores) {
  try {
    
        var now = Date.now();
        
        var d1 = document.getElementById('dpremarcada_ida_stacasa').value;
        var t1 = document.getElementById('horario_premarcada_ida_stacasa').value;   


        console.log('d1');
        console.log(d1);

        console.log('t1');
        console.log(t1);


      //var formtime = new Date(this.date.value + ' ' + this.time.value);
       var formtime = new Date(d1 + ' ' + t1);

       console.log('formtime');
       console.log(formtime);

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Because getTime() returns UTC time - your timezone is what is creating the difference.

Where are you based? This is suggesting you are somewhere west of Greenwhich (GMT-3) - is that correct?

The algorithm should still work though - because both times are in UTC - so the hour difference should still work out.

Well...
In the meanwhile I did this workaround

function pre_salvar_captacao_tit(validaAnteriores) {
  try {
    
        var now = Date.now();
        
        var d1 = document.getElementById('dpremarcada_ida_stacasa').value;
        var t1 = document.getElementById('horario_premarcada_ida_stacasa').value;   

       // This formats correctly what is presented at the form:
        var data = new Date(),
        dia  = data.getDate().toString(),
        diaF = (dia.length == 1) ? '0'+dia : dia,
        mes  = (data.getMonth()+1).toString(), //+1 pois no getMonth Janeiro começa com zero.
        mesF = (mes.length == 1) ? '0'+mes : mes,
        anoF = data.getFullYear();
       
        formtime = new Date(anoF+"/"+mesF+"/"+diaF+ ' ' + t1);

      
     if (  ( (formtime.getTime() - now) / 3600000)   < 3  )   {
            alert('Agendar com no mínimo 03 horas de antecedencia');
     }      
     else
     {
         alert('Agendamento OK');
    }

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So, it finally runs:

Difference of time greather than 03 hours => OK

Difference of time less than 03 hours => NOK

Well, it's running correctly.

That shouldn't be necessary but if it is working ....

Just checked your profile and I see you are in Brazil which is UTC-3 - which means the values you are seeing for the getTime() are correct.

What do you get when you dump the now value?

console.log(now);

This:
1549309222818

Ok I need to see both Now and the converted timestamp otherwise I can't do a comparison.

Can you do this.

console.log(now);
console.log(fromtime.getTime());

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Here it is:

Those are only 187 seconds apart?

I didn't change the textbox value.

Then the < 3 message should show.

Outstanding assistance!
Thank you.

You are welcome.