Javascript Random Number?

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I have the following script:

Timer=0;
function countdown(auctionid){
    var auctions;
    var divs;

    Timer=Timer+1;

    if((Timer%10=="0")||(Timer=="1")){
        $.get("current.php", {
                id:auctionid
            },
            function(data){
                auctions=data.split("||");
                for(n=0;n<=auctions.length;n++){
                    if(auctions[n] != undefined){
                        divis=auctions[n].split("##");

                        $('#futu'+divis[0]).html(divis[1]);
                    }
                }
            }
        );
    }

    var cauctionid="auctionid";
    var tauctions=auctionid.split("|");
    for(i=0;i<=tauctions.length;i++){
        if(tauctions[i] != undefined){
            var dd=$('#futu'+tauctions[i]).text();
            var cdd=dd-1;
            $('#futu'+tauctions[i]).html(cdd);

            dd=dd*1000;
            dday=Math.floor(dd/(60*60*1000*24)*1)
            dhour=Math.floor(dd/(60*60*1000)*1)
            dmin=Math.floor((dd%(60*60*1000))/(60*1000)*1)
            dsec=Math.floor(((dd%(60*60*1000))%(60*1000))/1000*1)

            if(dday==0&&dhour==0&&dmin==0&&dsec==0){
                $('#Bid'+tauctions[i]).html("SOLD");
            //return
            }
            if(dhour <=9){
                dhour = "0"+dhour;
            }
            if(dmin <=9){
                dmin = "0"+dmin;
            }
            if(dsec <=9){
                dsec = "0"+dsec;
            }

            if(dd>=1000){
                var valll=dhour+":"+dmin+":"+dsec;
            }

            if(dd<1000){
                var valll="00:00:00";
            }

            $('#Bid'+tauctions[i]).html(valll);
        }
    }
    refreshID=setTimeout("countdown('"+auctionid+"')",1000);
}

On the line that reads: if((Timer%10=="0")||(Timer=="1")){

How do i make the 10, a random number between 2 and 12?

You want to use the random() function. There is no version that returns an integer unfortunately, only a float between 0 and 1, so you'll need to do a few operations. Try the following:

var randomNum = Math.floor(Math.random() * 10) + 2;

This should generate a random integral number between 2 (inclusive) and 12 (exclusive). Change 10 to 11 if you want the 12 to be inclusive, of course.

JavaScript random() Method, More "Try it Yourself" examples below. Definition and Usage. The random() method returns a random number from 0 (inclusive) up to but not including 1  A Proper Random Function. As you can see from the examples above, it might be a good idea to create a proper random function to use for all random integer purposes. This JavaScript function always returns a random number between min (included) and max (excluded):

See the answers to this question which also allows you to set the seed value.

Math.random(), The implementation selects the initial seed to the random number generation Note that as numbers in JavaScript are IEEE 754 floating point  Math.random() Return value. A floating-point, pseudo-random number between 0 (inclusive) and 1 (exclusive). Examples. Note that as numbers in JavaScript are IEEE 754 floating point numbers with round-to-nearest-even behavior, the ranges claimed for the functions below (excluding the one for Math.random() itself) aren't exact.

Using the Web Crypto api.

console.log(

  crypto.getRandomValues(new Uint32Array(1))[0] ,

  crypto.getRandomValues(new Uint16Array(1))[0] ,
  
  crypto.getRandomValues(new Uint8Array(1))[0]
  
)

Using Math.random() in JavaScript - Joe Cardillo, In JavaScript, to get a random number between 0 and 1, use the Math.random() function. console.log(Math.random()) 0.5408145050563944. How to Generate Random Numbers in JavaScript. Random numbers are useful for all kinds of things. The problem with the Math.random() method that we will be using is that it generates a long, practically useless decimal number such as

Generate random number between two numbers in JavaScript , Important. The following code works only if the minimum value is 1 . It does not work for minimum values other than 1 . If you wanted to get a random integer  The random object is used to generate a random numbers in JavaScript. It generates the number from 0 to 1 by using Math.random( ) object in the program which is a method of JavaScript Math object JavaBeat

JavaScript, The Math.random() function is used to return a floating-point pseudo-random number between range [0,1) , 0 (inclusive) and 1 (exclusive).This random number  To generate a random number in JavaScript, simply use the following code: var randomnumber=Math.floor(Math.random()*11) where 11 dictates that the random number will fall between 0-10.

How to generate random number in given range using JavaScript , A number generated by a process, whose outcome is unpredictable is called Random Number. In JavaScript, this can be achieved by using Math.random()  JavaScript | Math.random() function The Math.random() function is used to return a floating-point pseudo-random number between range [0,1) , 0 (inclusive) and 1 (exclusive).This random number can then be scaled according to the desired range.