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Trouble creating a form from dates & maintaining form values 1

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ITadvice

ITadvice

IS-IT--Management
Jul 22, 2008
38
US
I want to create a web form that automatically has the current date and the previous date as the default. Basically I want the form to have the last 24 hrs as the default date range for the form. It was suggested that I use javascript. I dont know much about javascript so this is what I have so far:

Code: 
datecount=1;
var cur_dat=new Date();
curdate=cur_dat.getDate();
var diff_dat=new Date();
diff_dat.setDate(curdate-datecount);

My problem is that I don't know how to generate a dropdown menu from this information. My current HTML code looks like this:
Code: 
<select name="month">
<option value="01">January</option>

<select name="day">
<option value="01">1</option>

<select name="year">
<option value="08">2008</option>

I want to keep the values I set because they are in the format needed to create reports from the form. How do I automatically set the current and previous date while still maintaining the values needed for the reports?

 
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Another question, how effective would a cronjob be at accomplishing this? Is there a way to change the default dates on a daily basis? That way I could leave the html code as it is and just update the dates displayed. Any thoughts on this?
 
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This will create a new date object 1 day before 'today':

Code: 
var msecsInOneDay = 1000 * 60 * 60 * 24;
var today = new Date();
var yesterday = new Date(today.getTime() - msecsInOneDay);

Hope this helps,
Dan



Coedit Limited - Delivering standards compliant, accessible web solutions

Dan's Page [blue]@[/blue] Code Couch:
Code Couch Tech Snippets & Info:
 
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Thanks Dan, but that's not where I'm having trouble. My problem is that I don't know how to make a drop down menu that has today's date and yesterday's date pre-entered on the form. I want to keep the values I have for each selection so I can still be able to pass them on to my program. (Refer to my HTML sample above)
 
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See if this gets you started. There is probably a better way to do this that I don't know.

Code: 
<html>

<head>

<script type="text/javascript">

var d = new Date();

var month=new Array(12);
month[0]="January";
month[1]="February";
month[2]="March";
month[3]="April";
month[4]="May";
month[5]="June";
month[6]="July";
month[7]="August";
month[8]="September";
month[9]="October";
month[10]="November";
month[11]="December";

var m = month[d.getMonth()];
var dd = d.getDate();
var y = d.getFullYear();

var msecsInOneDay = 1000 * 60 * 60 * 24;
var today = new Date();
var yesterday = new Date(today.getTime() - msecsInOneDay);

</script>

</head>

<body>

<p>The date is 
<script type="text/javascript">
document.write(m);
document.write(" ");
document.write(dd);
document.write(", ");
document.write(y);
</script>
</p>

<p>Yesterday was 
<script type="text/javascript">
document.write(yesterday);
</script>
</p>

<form action="">
<select name="month">
<script type="text/javascript">
document.write("<option value='");
document.write("'>");
document.write(m);
document.write("</option>");
</script>
</select>
</form>

</body>
</html>
 
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I left a document.write(m); out as the second statement of the javascript in the form.
 
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Thanks BigRed that was a BIG help. Sorry for not following up sooner.
 
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