I have this right now:
This does infact work, except, it r
The onpaste event fires before the input's value is changed. You need something such as a setTimeout:
I'm storing a reference to this inside a global var as this is not accessible inside the scope of a timeout function which is attached to the window object.
I'm using 4 miliseconds as the Timeout as it's the minimum valid Interval/Timeout in the HTML5 specification. Edit: As noted in the comments, you may also use 0 miliseconds as timeOut which is automatically recalculated to 4. jsPerf tests.
Fiddle
You may as well use a function call inside your onpaste event passing this as a parameter to prevent your HTML mixing with JS too much. :)
And here's a function easier to read and which you can use in multiple inputs:
function pasted(element) {
setTimeout(function(){
alert(element.value);
}, 0); //or 4
}
Which can be called with simply onPaste="pasted(this)" for any input.
Fiddle