Random javascript functions: - linkfy - detect url in text ans transforms them to links - agoTime, helper to display a date twitter like (eg. 5 days ago)

agoTime

function timeDiff(current, previous) {

            var msPerMinute = 60 * 1000;
            var msPerHour = msPerMinute * 60;
            var msPerDay = msPerHour * 24;
            var msPerMonth = msPerDay * 30;
            var msPerYear = msPerDay * 365;

            var elapsed = current - previous;

            if (elapsed < msPerMinute) {
                return Math.round(elapsed / 1000) + ' seconds ago';
            } else if (elapsed < msPerHour) {
                return Math.round(elapsed / msPerMinute) + ' minutes ago';
            } else if (elapsed < msPerDay) {
                return Math.round(elapsed / msPerHour) + ' hours ago';
            } else if (elapsed < msPerMonth) {
                return '...' + Math.round(elapsed / msPerDay) + ' days ago';
            } else if (elapsed < msPerYear) {
                return '...' + Math.round(elapsed / msPerMonth) + ' months ago';
            } else {
                return '...' + Math.round(elapsed / msPerYear) + ' years ago';
            }
        }


        function agoTimeText(aTime) {
            var current = new Date().getTime();
            var previous = new Date(Date.parse(aTime)).getTime();
            var agoTime = timeDiff(current, previous);
            return agoTime;
        }

linkify

function linkify(inputText) {
            var replacedText, replacePattern1, replacePattern2, replacePattern3;

            //URLs starting with http://, https://, or ftp://
            replacePattern1 = /(\b(https?|ftp):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/gim;
            replacedText = inputText.replace(replacePattern1, '<a href="$1" target="_blank">$1</a>');

            //URLs starting with "www." (without // before it, or it'd re-link the ones done above).
            replacePattern2 = /(^|[^\/])(www\.[\S]+(\b|$))/gim;
            replacedText = replacedText.replace(replacePattern2, '$1<a href="http://$2" target="_blank">$2</a>');

            //Change email addresses to mailto:: links.
            replacePattern3 = /\w+@[a-zA-Z_]+?(?:\.[a-zA-Z]{2,6})+/gim;
            replacedText = replacedText.replace(replacePattern3, '<a href="mailto:$1">$1</a>');

            return replacedText;
        }