Coding questions
- Thread starter Xenonsoft
- Start date
Xenonsoft
Active Member
Anyone know why this wont work?
Just learning Javascript and thought I would make some formula to work out which numbers are prime for those under 100.
The script is fine and works seperately, so you can ignore that to an extent, but when added into a function called myfunction it won't work.
Using an input button (not sure if thats the way it should be done but it'll do).
Here's the header code:
<script type="text/javascript">
function myfunction()
{
var a, b, c, d;
for (num=1; num<=100; num++)
{
// Creating variables that hold the remainder when num is divided by these 5 numbers
a=num%2; b=num%3; c=num%5; d=num%7;
// If the number is 2, 3, 5 or 7 write it now
if (num==2 || num==3 || num==5 || num==7)
{
document.write(num + ", ");
}
// If the remainders of all aren't 0 or if the number isn't 1 then write it out as a prime
else if (a!=0 && b!=0 && c!=0 && d!=0 && num!=1)
{
document.write(num + ", ");
}
}
}
</script>
and the body:
<input type="button" value="Yeah!" onclick="myfunction()" />
Just learning Javascript and thought I would make some formula to work out which numbers are prime for those under 100.
The script is fine and works seperately, so you can ignore that to an extent, but when added into a function called myfunction it won't work.
Using an input button (not sure if thats the way it should be done but it'll do).
Here's the header code:
<script type="text/javascript">
function myfunction()
{
var a, b, c, d;
for (num=1; num<=100; num++)
{
// Creating variables that hold the remainder when num is divided by these 5 numbers
a=num%2; b=num%3; c=num%5; d=num%7;
// If the number is 2, 3, 5 or 7 write it now
if (num==2 || num==3 || num==5 || num==7)
{
document.write(num + ", ");
}
// If the remainders of all aren't 0 or if the number isn't 1 then write it out as a prime
else if (a!=0 && b!=0 && c!=0 && d!=0 && num!=1)
{
document.write(num + ", ");
}
}
}
</script>
and the body:
<input type="button" value="Yeah!" onclick="myfunction()" />
Kevin
Senior Member
Preloading images
When you preload images using JavaScript, does the user see that their browser is loading something, even though everything they should see is already visible? If so, is there any way to make them preload in the "background" ?
I'd like to know now because I will be messing around with them for an upcoming project.
EDIT: Oh, and using sprites is out of the question right now...
When you preload images using JavaScript, does the user see that their browser is loading something, even though everything they should see is already visible? If so, is there any way to make them preload in the "background" ?
I'd like to know now because I will be messing around with them for an upcoming project.
EDIT: Oh, and using sprites is out of the question right now...