Javascript Date Verify Whether A Date Falls Within Any Given Time Range

function setDateRange(dateObjectToTest, referencedateObject, rangePlus, rangeMinus/*pass no less sign*/, time){
if(typeof dateObjectToTest!='object'){dateObjectToTest=new Date();};
if(typeof referencedateObject!='object'){referencedateObject=new Date();};
rangePlus=parseFloat(rangePlus)||0;
rangeMinus=parseFloat(rangeMinus)||0;
var sP=0, mP=0, hP=0, dP=0, MP=0, yP=0;
var sL=0, mL=0, hL=0, dL=0, ML=0, yL=0;
switch(time){
case 0: dP=rangePlus; dL=rangeMinus; break;
case 1: MP=rangePlus; ML=rangeMinus; break;
case 2: yP=rangePlus; yL=rangeMinus; break;
case 3: hP=rangePlus; hL=rangeMinus; break;
case 4: mP=rangePlus; mL=rangeMinus; break;
case 5: sP=rangePlus; sL=rangeMinus; break;
default: dP=rangePlus; dL=rangeMinus;
}
var past=new Date(referencedateObject.getFullYear()-yL, referencedateObject.getMonth()-ML, referencedateObject.getDate()-dL, referencedateObject.getHours()-hL, referencedateObject.getMinutes()-mL, referencedateObject.getSeconds()-sL);
var future=new Date(referencedateObject.getFullYear()+yP, referencedateObject.getMonth()+MP, referencedateObject.getDate()+dP, referencedateObject.getHours()+hP, referencedateObject.getMinutes()+mP, referencedateObject.getSeconds()+sP);
return ( dateObjectToTest.getTime()>=past.getTime() && dateObjectToTest.getTime()<=future.getTime() )?true:false;
/*keep this comment to reuse freely
http://www.fullposter.com/?1*/}

• 0=days
• 1=months
• 2=years
• 3=hours
• 4=minutes
• 5=seconds

<script>

function setDateRangeWrong(dateObjectToTest, referencedateObject, rangePlus, rangeMinus/*pass no less sign*/, time){
	alert('This function should not be used and is meant to reveal a potential issue');
if(typeof dateObjectToTest!='object'){dateObjectToTest=new Date();};
if(typeof referencedateObject!='object'){referencedateObject=new Date();};
rangePlus=parseFloat(rangePlus)||0;
rangeMinus=parseFloat(rangeMinus)||0;
switch(time){
case 0: time='Date'; break;
case 1: time='Months'; break;
case 2: time='FullYear'; break;
case 3: time='Hours'; break;
case 4: time='Minutes'; break;
case 5: time='Seconds'; break;
default: time='Date';
}
var past=new Date();
past['set'+time](referencedateObject['get'+time]()-rangeMinus);
alert(
'using expression: past["set'+time+'"](referencedateObject["get'+time+'"]()-'+rangeMinus+')\n\n'+
'month is '+referencedateObject.getMonth()+'\nday is '+referencedateObject['get'+time]()+'\nand year is '+referencedateObject.getFullYear()+'\n\nYet if you subtract '+'get'+time+'-'+rangeMinus+' you get:\n\nmonth is '+past.getMonth()+'\nday is '+past.getDate()+'\nand year is '+past.getFullYear()
)
alert('Now we reset the variable and use the constructor instead. Click OK')
var past=new Date(referencedateObject.getFullYear(), referencedateObject.getMonth(), referencedateObject.getDate()-rangeMinus);
alert(
'using expression: var past=new Date(referencedateObject.getFullYear(), referencedateObject.getMonth(), referencedateObject.getDate()-'+rangeMinus+')\n\n'+
'month is '+referencedateObject.getMonth()+'\nday is '+referencedateObject['get'+time]()+'\nand year is '+referencedateObject.getFullYear()+'\n\nNow if you subtract '+'get'+time+'-'+rangeMinus+' you get:\n\nmonth is '+past.getMonth()+'\nday is '+past.getDate()+'\nand year is '+past.getFullYear()
)
var future=new Date();
future['set'+time](referencedateObject['get'+time]()+rangePlus);
return ( dateObjectToTest.getTime()>=past.getTime() && dateObjectToTest.getTime()<=future.getTime() )?true:false;
}


var referenceDate=new Date(2011, 0/*=January*/, 1, 0, 0, 0);
var dateToTestExample=new Date(2010, 11/*=December*/, 25, 0, 0, 0);

setDateRangeWrong(dateToTestExample, referenceDate, 7, 7, 0);

</script>

<script>
//include your setDateRange function here, then:

var referenceDate=new Date(2011, 0/*=January*/, 1, 0, 0, 0);
//
var dateToTestExample=new Date(2010, 11/*=December*/, 25, 0, 0, 0);/*from 25 to reference: 
	dec 26 one day,
	dec 27 two days,
	dec 28 three days,
	dec 29 four days,
	dec 30 five days,
	dec 31 six days,
	jan 1 seven days
	condition of range within 7 days more or less: TRUE
	*/
//
var check=setDateRange(dateToTestExample, referenceDate, 7, 7, 0);
alert(check);

//another test:

var referenceDate=new Date(2011, 4, 5, 7/*hours*/, 30/*minutes*/, 0);
//
var dateToTestExample=new Date(2011, 4, 5, 8/*hours*/, 0/*minutes: make this 1, and will return false*/, 0);
//
var check=setDateRange(dateToTestExample, referenceDate, 30, 30, 4/*MINUTES*/);
alert(check);

/*another test: a range in the future: pass rangeMinus as negative, rangePlus as positive AND higher of the desired amount of days*/

var referenceDate=new Date(2011, 1, 12, 0, 0, 0);
//
var dateToTestExample=new Date(2011, 1, 20/*set this to 19 or 27 and shall return false*/, 0, 0, 0);
//
var check=setDateRange(dateToTestExample, false, 14/*7+7, placing the ending edge*/, -7/*7 to get a week from now, placing the starting edge*/, 0);/*Checked date must be in the future: 7 days from reference date at least, 7 more days from thence at most*/
alert(check);

</script>