Topic awaiting preservation: stumped (Page 1 of 1)

So in the javascript book I'm studying it says to do the following:

quote:

---

Create a for loop that will output the numbers through 200. Create code that ensures there is a space between each number. Create code that will cause a line break after the output reaches 10, 20, 30, 40 and so on. Create code that outputs the value of the loop counter variable after the for loop is exited.

---

What I have so far:
<SCRIPT LANGUAGE="JavaScript">

for(var i = 0; i < 200; i++) {

document.write(i + " ");

}

//-->
</SCRIPT>

my problem is I have no Idea how to add a line break after the loop reaches increments of 10. I've tried
<SCRIPT LANGUAGE="JavaScript">

for(var i = 0; i < 200; i++) {

if (i % 10) continue;

document.write(i + " ");
}

//-->
</SCRIPT>

but that obviously only writes the increments of 10. I thought a if statement like

if (i % 10) {

"<P>"

}
But theres no method or property..... so I'm stumped. Can school me a bit on this?





[This message has been edited by jive (edited 01-24-2003).]

You're on the right track.

First of all, you want to output the line break *after* you output every 10th number. So I would recommend this structure:

for (...) {
document.write(i + ' ');
if (this is a multiple of 10) document.write('<br>');
}

Notice that a line break can be ouputted by writing a <br> tag to the document.

The only other problem is that you're not properly calculating whether a i is a multiple of 10 or not. This:

i % 10

will give you the result of subtracting the nearest multiple of 10 that's less than i from i. So if i is, say, 31, it will give you 1. If i is 32, it will give you 2. 33 will give you 3. Etc. The key is that when i is a multiple of 10, i % 10 will return zero! So, to test if i is a multiple of 10, you must say

if (i % 10 == 0)

oooooooooooohhhhhh. I do get it. *lightbulb goes on* That's cool. I love it when I get a concept. Thanks Slime!!