Hi, I finished this script and for some reason there is a delay
every so often in the timing. Sometimes
it seems two take 2 seconds instead of 1.
Can anyone see anything that would slow it down? I sure can't see it.
Thank you very much, Amy <body onload="changel ink()"><a href="#"
id="url"></a>
arr = new Array();
arr[0] = ["Link 1","http://www.google.com"];
arr[1] = ["Link 2","http://www.msn.com"];
arr[2] = ["Link 3","http://www.yahoo.com"];
arr[3] = ["Link 4","http://www.google.com"];
arr[4] = ["Link 5","http://www.msn.com"];
arr[5] = ["Link 6","http://www.yahoo.com"];
arr[6] = ["Link 7","http://www.msn.com"];
arr[7] = ["Link 8","http://www.google.com"];
arr[8] = ["Link 9","http://www.yahoo.com"];
arr[9] = ["Link 10","http://www.msn.com"];
arr[10] = ["Link 11","http://www.yahoo.com"];
arr[11] = ["Link 12","http://www.google.com"];
arr[12] = ["Link 13","http://www.msn.com"];
arr[13] = ["Link 14","http://www.yahoo.com"];
arr[14] = ["Link 15","http://www.google.com"];
counter = 0;
function changelink()
{
rand = Math.floor(Math .random()*arr.l ength);
document.getEle mentById("url") .href = arr[rand][1];
document.getEle mentById("url") .innerHTML = arr[rand][0];
counter++;
if (counter == arr.length)
counter = 0;
}
setInterval('ch angelink()', 1000); 17  1787 
Amy said:
>
Hi, I finished this script and for some reason there is a delay
every so often in the timing. Sometimes
it seems two take 2 seconds instead of 1.
Can anyone see anything that would slow it down? I sure can't see it.
Thank you very much, Amy <body onload="changel ink()"><a href="#"
id="url"></a>
arr = new Array();
arr[0] = ["Link 1","http://www.google.com"];
arr[1] = ["Link 2","http://www.msn.com"];
arr[2] = ["Link 3","http://www.yahoo.com"];
arr[3] = ["Link 4","http://www.google.com"];
arr[4] = ["Link 5","http://www.msn.com"];
arr[5] = ["Link 6","http://www.yahoo.com"];
arr[6] = ["Link 7","http://www.msn.com"];
arr[7] = ["Link 8","http://www.google.com"];
arr[8] = ["Link 9","http://www.yahoo.com"];
arr[9] = ["Link 10","http://www.msn.com"];
arr[10] = ["Link 11","http://www.yahoo.com"];
arr[11] = ["Link 12","http://www.google.com"];
arr[12] = ["Link 13","http://www.msn.com"];
arr[13] = ["Link 14","http://www.yahoo.com"];
arr[14] = ["Link 15","http://www.google.com"];
counter = 0;
function changelink()
{
rand = Math.floor(Math .random()*arr.l ength);
document.getEl ementById("url" ).href = arr[rand][1];
document.getEl ementById("url" ).innerHTML = arr[rand][0];
counter++;
if (counter == arr.length)
counter = 0;
}
setInterval('c hangelink()', 1000);
Sometimes your computer is busy doing something else.
Can you explain the purpose of the "counter" variable?
This still looks like a homework assignment, to me.
--
Amy wrote:
Hi, I finished this script and for some reason there is a delay
every so often in the timing. Sometimes
it seems two take 2 seconds instead of 1.
Can anyone see anything that would slow it down? I sure can't see it.
arr = new Array();
arr[0] = ["Link 1","http://www.google.com"];
arr[1] = ["Link 2","http://www.msn.com"];
arr[2] = ["Link 3","http://www.yahoo.com"];
arr[3] = ["Link 4","http://www.google.com"];
arr[4] = ["Link 5","http://www.msn.com"];
arr[5] = ["Link 6","http://www.yahoo.com"];
arr[6] = ["Link 7","http://www.msn.com"];
arr[7] = ["Link 8","http://www.google.com"];
arr[8] = ["Link 9","http://www.yahoo.com"];
arr[9] = ["Link 10","http://www.msn.com"];
arr[10] = ["Link 11","http://www.yahoo.com"];
arr[11] = ["Link 12","http://www.google.com"];
arr[12] = ["Link 13","http://www.msn.com"];
arr[13] = ["Link 14","http://www.yahoo.com"];
arr[14] = ["Link 15","http://www.google.com"];
Think about it - what happens if we are displaying the content of
arr[0] and we pick the random number 3 as the next one to display?
Would the script appear to pause?
n...@chthonic.f 9.co.uk wrote:
>
Think about it - what happens if we are displaying the content of
arr[0] and we pick the random number 3 as the next one to display?
Would the script appear to pause?
Scratch that - I meant if we pick the random number 0 as the next one
to display.
You can work out for yourself what to do next...
Amy said:
>
Hi, I finished this script and for some reason there is a delay
every so often in the timing. Sometimes
it seems two take 2 seconds instead of 1.
Can anyone see anything that would slow it down? I sure can't see it.
Thank you very much, Amy <body onload="changel ink()"><a href="#"
id="url"></a>
arr = new Array();
arr[0] = ["Link 1","http://www.google.com"];
arr[1] = ["Link 2","http://www.msn.com"];
arr[2] = ["Link 3","http://www.yahoo.com"];
arr[3] = ["Link 4","http://www.google.com"];
arr[4] = ["Link 5","http://www.msn.com"];
arr[5] = ["Link 6","http://www.yahoo.com"];
arr[6] = ["Link 7","http://www.msn.com"];
arr[7] = ["Link 8","http://www.google.com"];
arr[8] = ["Link 9","http://www.yahoo.com"];
arr[9] = ["Link 10","http://www.msn.com"];
arr[10] = ["Link 11","http://www.yahoo.com"];
arr[11] = ["Link 12","http://www.google.com"];
arr[12] = ["Link 13","http://www.msn.com"];
arr[13] = ["Link 14","http://www.yahoo.com"];
arr[14] = ["Link 15","http://www.google.com"];
counter = 0;
function changelink()
{
rand = Math.floor(Math .random()*arr.l ength);
alert(rand);
>document.getEl ementById("url" ).href = arr[rand][1];
document.getEl ementById("url" ).innerHTML = arr[rand][0];
counter++;
if (counter == arr.length)
counter = 0;
}
setInterval('c hangelink()', 1000);
Even if this is an assignment, I suppose it doesn't hurt to
show you how to debug it. Add the alert() above and watch
how the values change. You'll see it more quickly if you
reduce the number of elements in arr while testing.
--
Thank you very much. This isn't homework at all, I provide all the
javascript almost completely done which is more than most people do.
You guys already seem to know what to do. I still don't know what your
trying to tell me. Can't seem to find that alert you told me to try.
Are you trying to tell me that with random arrays since its random it
takes longer sometimes to pick its next choice? Thats what causes a
delay? If thats the case why don't I have problem with other second
random arrays that I have tested? I'll slow down the timer and see what
happens and let you know. If there is something else I am messing
please tell me what it is.
Lee wrote:
Amy said:
Hi, I finished this script and for some reason there is a delay
every so often in the timing. Sometimes
it seems two take 2 seconds instead of 1.
Can anyone see anything that would slow it down? I sure can't see it.
Thank you very much, Amy <body onload="changel ink()"><a href="#"
id="url"></a>
arr = new Array();
arr[0] = ["Link 1","http://www.google.com"];
arr[1] = ["Link 2","http://www.msn.com"];
arr[2] = ["Link 3","http://www.yahoo.com"];
arr[3] = ["Link 4","http://www.google.com"];
arr[4] = ["Link 5","http://www.msn.com"];
arr[5] = ["Link 6","http://www.yahoo.com"];
arr[6] = ["Link 7","http://www.msn.com"];
arr[7] = ["Link 8","http://www.google.com"];
arr[8] = ["Link 9","http://www.yahoo.com"];
arr[9] = ["Link 10","http://www.msn.com"];
arr[10] = ["Link 11","http://www.yahoo.com"];
arr[11] = ["Link 12","http://www.google.com"];
arr[12] = ["Link 13","http://www.msn.com"];
arr[13] = ["Link 14","http://www.yahoo.com"];
arr[14] = ["Link 15","http://www.google.com"];
counter = 0;
function changelink()
{
rand = Math.floor(Math .random()*arr.l ength);
alert(rand);
document.getEle mentById("url") .href = arr[rand][1];
document.getEle mentById("url") .innerHTML = arr[rand][0];
counter++;
if (counter == arr.length)
counter = 0;
}
setInterval('ch angelink()', 1000);
Even if this is an assignment, I suppose it doesn't hurt to
show you how to debug it. Add the alert() above and watch
how the values change. You'll see it more quickly if you
reduce the number of elements in arr while testing.
--
Are you trying to tell me I don't need the counter variable since its
random?
Making it a longer timer didn't help, it doubles the timing on some
items no matter what.
Don't know if thats what you are trying to tell me or not but makes
perfect sense so I took all the counters out. To this.
function changelink()
{
var rand = Math.floor(Math .random()*conte nt.length);
document.getEle mentById("url") .href = content[rand][1];
document.getEle mentById("url") .innerHTML = content[rand][0];
}
setInterval("ch angelink()", 2000);
Same problem though, still a delay. I sure hope someone can help.
Amy said:
>
Thank you very much. This isn't homework at all, I provide all the
javascript almost completely done which is more than most people do.
You guys already seem to know what to do. I still don't know what your
trying to tell me. Can't seem to find that alert you told me to try.
Are you trying to tell me that with random arrays since its random it
takes longer sometimes to pick its next choice? Thats what causes a
delay? If thats the case why don't I have problem with other second
random arrays that I have tested? I'll slow down the timer and see what
happens and let you know. If there is something else I am messing
please tell me what it is.
If the same random number is generated twice in a row, the
link won't change, and so it will appear to be taking longer.
The following includes simple code to ensure that there are
no repeats by incrementing the value if necessary. You could
just create random numbers until you find one that's not the
same as the previous one, but this way has the advantage that
it even works if arr.length=1. We sacrifice some randomness
for that, but it's a good bargain in this case. Another way
to go would be to generate a shuffled list of indices and
iterating through it, so you never see a repeat until you've
seen all of the links, but that's more complicated.
You'll find more than you probably want to know at: http://www.merlyn.demon.co.uk/js-randm.htm
var previous=-1;
function changelink() {
var rand = Math.floor(Math .random()*arr.l ength);
if ( rand == previous ) {
rand++;
if ( rand == arr.length ) {
rand=0;
}
}
previous=rand;
document.getEle mentById("url") .href = arr[rand][1];
document.getEle mentById("url") .innerHTML = arr[rand][0];
}
--
Amy wrote on 07 nov 2006 in comp.lang.javas cript:
Don't know if thats what you are trying to tell me or not but makes
perfect sense so I took all the counters out. To this.
What are you talking about, Amy?
Could you please adhere to usenet netiquette and quote what you are
reacting on, as this is not email but usenet posting.
[and when you quote, please do not toppost]
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress) This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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