A practical setInterval function wrapper that I oftenly use, in which the interval is cleared when the callback function returns true.

setInterval-wrapper.js

(function() {
    $.setInterval = function(int, fn) {
        var returnValue
        var interval = setInterval(function() {
            if (returnValue === true) {
                clearInterval(interval);
            } else {
                returnValue = fn()
            }
        }, int)
        return interval
    };
}());

Instead of the following routine:

var i = 0;
var myInterval = setInterval(function() {
    // something to be done 10 times, with 1000 millisecond period
    i++;
    if(i>10) {
        clearInterval(myInterval)
    }
}, 1000)

easily:

var i = 0;
$.setInterval(1000, function() {
    // something to be done 10 times, with 1000 millisecond period
    i++;
    if(i>10) { return true; }
})

Pros:

• Never write "clearInterval" again.
• Never create variables such as "myInterval"