JS collection from stackoverflow.com

stackoverflow.js

// jQuery Bounce Effect on click no jQuery UI -- <http://stackoverflow.com/a/10363828/4494083>
// Require jQuery
function doBounce(element, times, distance, speed) {
    for(var i = 0; i < times; i++) {
        element.animate({marginTop: '-='+distance}, speed)
            .animate({marginTop: '+='+distance}, speed);
    }        
}


// Is object empty? -- <http://stackoverflow.com/a/4994244/4494083>
// Speed up calls to hasOwnProperty 
var hasOwnProperty = Object.prototype.hasOwnProperty;

function isEmpty(obj) {

    // null and undefined are "empty"
    if (obj == null) return true;

    // Assume if it has a length property with a non-zero value
    // that that property is correct.
    if (obj.length > 0)    return false;
    if (obj.length === 0)  return true;

    // Otherwise, does it have any properties of its own?
    // Note that this doesn't handle
    // toString and valueOf enumeration bugs in IE < 9
    for (var key in obj) {
        if (hasOwnProperty.call(obj, key)) return false;
    }

    return true;
}