overflow check
by ShaCP
HTML
<div>1,234,567</div>
CSS
div {
outline: 1px solid #ccc;
}
* {
border: 1px solid;
}
JavaScript
// open your console
var divs = document.getElementsByTagName('div');
var i, div, overflowing;
for (i=0; i<divs.length; i++) {
div = divs[i];
overflowing = div.offsetWidth < div.scrollWidth;
console.log('overflowing? ', overflowing);
}