ideally this is for AS3, but I can always convert it down from JavaScript. Basically I want type numbers into a field and have it add the decimal. The issue is, the keyboard won't have a "." key
So if the final output was 10.45
it would automatically start to format as I type:
1 it would change to .01. And as I keep typing..
.01
.10
10.40
10.45
This can be accomplished by some simple string manipulation. Just split the string into parts and insert the decimal.
HTML
<input type="text" id="price" onchange="formatPrice(this)" />
Javascript
function formatPrice(obj) {
//remove any existing decimal
p = obj.value.replace('.','');
//get everything except the last 2 digits
var l = p.substring(-2, p.length-2);
//get the last 2 digits
var r = p.substring(p.length-2,p.length);
//update the value
obj.value = l + '.' + r;
}
You can see it working here: https://jsfiddle.net/x3wey5uk/