Help with 'for' loop

[DregondRahl]

Can someone please explain the 'for' loop for me? i get so confused, here is an example for loop i found. What i don't understand is how they get the bits in bold:

PHP: Select all

for(i = 0; i< td.length; i++){ 

I know to some of you this may be easy, but I have learning difficulties, could someone explain it in very very easy steps please.

[DregondRahl]

What is with the edit lol, that is not PHP, it's a JavaScript loop

[Ryan Fait]

I'm confused about your PHP reference, but in Layman's terms, it means.

The variable 'i' is set to zero. i = 0;

So long as the variable is less than the number of items in the array, 'td', 'i' will still keep on running the loop.

i++ means the number 'i' is plus one.

[spinal007]

to complement Ryan's answer, the official definition of a Javascript for loop is...
for( INITIALIZE, CONDITION, INCREMENT ){
// ... do stuff
}

INITIALIZE: a statement executed before the loop starts
This is usually used to declare a counter to be used in the loop
CONDITION: an expression that evaluates to either true or false
This is tested at the end of every cycle, false indicates "stop looping"...
INCREMENT: a statement to be executed at the end of every cycle.
This is usually used to increment the counter (eg.: add 1)

Now tell me, what the hell did you mean by this?
What i don't understand is how they get the bits in bold

If you mean you saw the code somewhere and some words (such as for) were in bold, this is called syntax highlighting. It makes it easier for programmers to read the code and identify special commands. 'How they make it bold' would be too much for you to understand at this stage...

[Ryan Fait]

Nice explanation Spinal I kind of have a 'need to know' relationship with JS. That is, if I need something to work, I do the research to figure out how I can get it to function properly. I'm hoping for the universal understanding someday.