arrays - Understanding a JavaScript For Loop -

if have variables , loop condition set-up this:

var scores = [23, 53, 85]; var arraylength = scores.length; var i;  for(i = 0; < arraylength; i++) 

does i refer scores array indexed position of 0, or i counter number, set 0?

i'm kinda confused on understanding what's happening.

any appreciated!

here can see in action:

var scores = [23, 53, 85];  var arraylength = scores.length;  var i;    for(i = 0; < arraylength; i++) {    console.log('i = ' + + ', scores[i] = ' + scores[i]);  }  console.log('end of loop: = ' + i);

one important thing understand i incremented until condition i < arraylength not met anymore. will reach value 3 loop end immediately. therefore, code inside loop not executed i = 3.