CodingForums.com - Date conflict between new event & existed events startDate,endDate

There is quite a lot of code involved in this. Here is an outline to point you in the right direction. Essentially you need to convert your dates into Javascript Date Objects so that a comparison can be made.

But you must still ensure that the input is valid - only valid dates (not 31st February), in the right format dd/mm/yyyy, and that the end date is after the start date.
I leave that to you. I have invented data for the first three items.

This outline should move you forward:-

Code:



Event Title <input type = "text" id = "evtit">

Start Date dd/mm/yyyy <input type = "text" id = "stdate">

End Date dd/mm/yyyy <input type = "text" id = "endate">

<br><br>

<input type = "button" value = "Add Event" onclick = "add()">



<script type = "text/javascript">



var eventName = ["Event1", "Event2", "Event3"];

var startDate = ["05/01/2012", "12/02/2012", "08/03/2012"];

var endDate = ["12/01/2012", "20/02/2012", "19/03/2012"];



function add() {

var t = document.getElementById("evtit").value;

var sd = document.getElementById("stdate").value;

var ed = document.getElementById("endate").value;

// CHECK THE VALIDITY OF START AND END DATES

var ssplit = sd.split("/");

var esplit = ed.split("/");

var sobj = new Date(ssplit[2],ssplit[1]-1,ssplit[0]);  // months in Javascript are 0-11

var eobj = new Date(esplit[2],esplit[1]-1,esplit[0]);



for (var i =0; i<eventName.length; i++) {

var s = startDate[i].split("/");

var ss = new Date(s[2],s[1]-1,s[0]);  // months in Javascript are 0-11

var e = endDate[i].split("/");

var es = new Date(e[2],e[1]-1,e[0]);  // months in Javascript are 0-11

if ((eobj < ss) || (sobj > es)) {

alert ("OK - no overlap with Event " + i);

}

else {

var OK = false;

alert ("The event dates overlap with Event " + i");

return false;

}

}



// if the dates do not overlap add the details to the 3 arrays



}



</script>

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