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window.Util = {
isNumber: function (n) {
return typeof n === 'number' && !isNaN(n);
},
isFunction: function (fn) {
return typeof fn === 'function';
},
hasClass: function (element, className) {
return element.classList.contains(className);
},
getByClass: function (element, className) {
return element.getElementsByClassName ?
element.getElementsByClassName(className) :
element.querySelectorAll('.' + className);
},
createImage: function (attrs) {
var container = document.createElement('div');
var image = new Image();
var attr;
if (typeof attrs !== 'object') {
attrs = {};
}
if (!attrs.src) {
attrs.src = '../docs/images/picture.jpg';
}
for (attr in attrs) {
if (attrs.hasOwnProperty(attr)) {
image[attr] = attrs[attr];
}
}
container.className = 'container';
container.appendChild(image);
document.body.appendChild(container);
return image;
},
dispatchEvent: function (element, type, data) {
var event;
if (element.dispatchEvent) {
// Event and CustomEvent on IE9-11 are global objects, not constructors
if (typeof Event === 'function' && typeof CustomEvent === 'function') {
if (!data) {
event = new Event(type, {
bubbles: true,
cancelable: true
});
} else {
event = new CustomEvent(type, {
detail: data,
bubbles: true,
cancelable: true
});
}
} else if (!data) {
event = document.createEvent('Event');
event.initEvent(type, true, true);
} else {
event = document.createEvent('CustomEvent');
event.initCustomEvent(type, true, true, data);
}
// IE9+
return element.dispatchEvent(event);
} else if (element.fireEvent) {
// IE6-10 (native events only)
return element.fireEvent('on' + type);
}
}
};
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