You are looking for the getAttribute function. Which is accessible though the element.
You would use it like this.
var division = document.querySelectorAll('div')
for(var i=0,length=division.length;i < length;i++)
{
var element = division[i];
var alignData = division.getAttribute('align'); //alignData = center
if(alignData === 'center')
{
console.log('Data Found!');
}
}
If you're looking to see what attributes are available on the element, these are available though
division.attributes
So for instance in your example if you wanted to see if an align property was available you could write this.
//Test to see if attribute exists on element
if(division.attributes.hasOwnProperty('align'))
{
//It does!
}