decodeURIComponent vs unescape, what is wrong with unescape?

Question

In answering another question I became aware that my Javascript/DOM knowledge had become a bit out of date in that I am still using escape/unescape

Answer 1

The best Answer is this it's working online on this website http://meyerweb.com/eric/tools/dencoder/

function decode() {
    var obj = document.getElementById('dencoder');
    var encoded = obj.value;
    obj.value = decodeURIComponent(encoded.replace(/\+/g,  " "));
}