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utils.js
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utils.js
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// js smooth scroll
// https://jsfiddle.net/s61x7c4e/
function scrollToItem(element, duration = 1000) {
const getElementY = (el) => window.pageYOffset + el.getBoundingClientRect().top;
const easing = (t) => t<.5 ? 4*t*t*t : (t-1)*(2*t-2)*(2*t-2)+1;
var startingY = window.pageYOffset;
var elementY = getElementY(element);
var targetY = ((document.body.scrollHeight - elementY < window.innerHeight) ? document.body.scrollHeight - window.innerHeight : elementY) - 100;
var diff = targetY - startingY;
var start;
if (!diff) return;
window.requestAnimationFrame(function step(timestamp) {
if (!start) start = timestamp;
var time = timestamp - start;
var percent = Math.min(time / duration, 1);
percent = easing(percent);
window.scrollTo(0, startingY + diff * percent);
if (time < duration) window.requestAnimationFrame(step);
});
}
function isScrolledIntoView(el) {
var elemTop = el.getBoundingClientRect().top;
var elemBottom = el.getBoundingClientRect().bottom;
var isVisible = elemTop < window.innerHeight && elemBottom >= 0;
return isVisible;
}
// https://gist.github.com/skattyadz/1501387
String.prototype.linkify = function() {
// http://, https://, ftp://
var urlPattern = /\b(?:https?|ftp):\/\/[a-z0-9-+&@#\/%?=~_|!:,.;]*[a-z0-9-+&@#\/%=~_|]/gim;
// www. sans http:// or https://
var pseudoUrlPattern = /(^|[^\/])(www\.[\S]+(\b|$))/gim;
// Email addresses
var emailAddressPattern = /\w+@[a-zA-Z_]+?(?:\.[a-zA-Z]{2,6})+/gim;
var hashtagPattern = /(^|\s)#(\w+)/g;
return this
.replace(urlPattern, '<a href="$&" target="_blank">$&</a>')
.replace(pseudoUrlPattern, '$1<a href="http://$2" target="_blank">$2</a>')
.replace(emailAddressPattern, '<a href="mailto:$&">$&</a>')
.replace(hashtagPattern, '$1<a href="https://www.facebook.com/hashtag/$2" target="_blank">#$2</a>');
};
/**
* Date Format
* Copyright (c) 2011, marlun78
* MIT License, https://gist.github.com/marlun78/1351171
*/
(function () {
'use strict';
var asUtc = false,
days = 'Sunday Monday Tuesday Wednesday Thursday Friday Saturday'.split(' '),
daysAbbr = 'Sun Mon Tue Wed Thu Fri Sat'.split(' '),
designators = 'AM PM'.split(' '),
defaultFormat = 'MMMM d""x "at" h:mm tt',
months = 'January February March April May June July August September October November December'.split(' '),
monthsAbbr = 'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split(' '),
// The formatting function
formatDate =(function(){
var findPatterns = /([dfFhmHMstxyz]+)(?=([^"']*["'][^"']*["'])*[^"']*$)/g,
getMethod = function (method) {
return 'get' + (asUtc ? 'UTC' : '') + method;
},
handlers = {
d: function () { return this[getMethod('Date')](); },
dd: function () { return pad(this[getMethod('Date')]()); },
ddd: function () { return getDayName.call(this, true); },
dddd: function () { return getDayName.call(this); },
f: function () { return pad(pad(this[getMethod('Milliseconds')](), 3), 6, true).substr(0, 1); },
ff: function () { return pad(pad(this[getMethod('Milliseconds')](), 3), 6, true).substr(0, 2); },
fff: function () { return pad(pad(this[getMethod('Milliseconds')](), 3), 6, true).substr(0, 3); },
ffff: function () { return pad(pad(this[getMethod('Milliseconds')](), 3), 6, true).substr(0, 4); },
fffff: function () { return pad(pad(this[getMethod('Milliseconds')](), 3), 6, true).substr(0, 5); },
ffffff: function () { return pad(pad(this[getMethod('Milliseconds')](), 3), 6, true).substr(0, 6); },
F: function () { var r = pad(this[getMethod('Milliseconds')](), 3).substr(0, 1); return r === '0' ? '' : r; },
FF: function () { var r = pad(this[getMethod('Milliseconds')](), 3).substr(0, 2); return r === '00' ? '' : r; },
FFF: function () { return pad(this[getMethod('Milliseconds')](), 3).substr(0, 3); },
FFFF: function () { return handlers.FFF.call(this); },
FFFFF: function () { return handlers.FFF.call(this); },
FFFFFF: function () { return handlers.FFF.call(this); },
h: function () { var h = this[getMethod('Hours')](); return h > 12 ? h - 12 : h; },
hh: function () { var h = this[getMethod('Hours')](); return pad(h > 12 ? h - 12 : h); },
m: function () { return this[getMethod('Minutes')](); },
mm: function () { return pad(this[getMethod('Minutes')]()); },
H: function () { return this[getMethod('Hours')](); },
HH: function () { return pad(this[getMethod('Hours')]()); },
M: function () { return this[getMethod('Month')]() + 1; },
MM: function () { return pad(this[getMethod('Month')]() + 1); },
MMM: function () { return getMonthName.call(this, true); },
MMMM: function () { return getMonthName.call(this); },
s: function () { return this[getMethod('Seconds')](); },
ss: function () { return pad(this[getMethod('Seconds')]()); },
tt: function () { return getDesignator.call(this); },
x: function () { return getOrdinal.call(this); },
y: function () { var y = this[getMethod('FullYear')](), s = y.toString(); return y < 10 ? y : s.substr(s.length - 2); },
yy: function () { return pad(this[getMethod('FullYear')](), 2); },
yyy: function () { var y = this[getMethod('FullYear')](), s = y.toString(); return y < 1000 ? pad(y, 3) : s.substr(s.length - 4); },
yyyy: function () { return pad(this[getMethod('FullYear')](), 4); },
yyyyy: function () { return pad(this[getMethod('FullYear')](), 5); },
yyyyyy: function () { return pad(this[getMethod('FullYear')](), 6); },
z: function () { var t = this.getTimezoneOffset(); return (t > 0 ? '-' : '+') + Math.abs(t / 60); },
zz: function () { var t = this.getTimezoneOffset(); return (t > 0 ? '-' : '+') + pad(Math.abs(t / 60)); },
zzz: function () { var t = this.getTimezoneOffset(); return (t > 0 ? '-' : '+') + pad(Math.abs(t / 60)) + ':' + pad((Math.abs(t / 60) % 1) * 60); }
};
return function () {
var self = this, format, settings;
// Evaluate arguments
if (typeof arguments[0] === 'string') {
format = arguments[0];
settings = arguments[1];
}
else {
format = null;
settings = arguments[0];
}
// Store any passed settings
if (settings) {
if (typeof settings.asUtc !== 'undefined') asUtc = settings.asUtc;
if (settings.days) days = settings.days;
if (settings.daysAbbr) daysAbbr = settings.daysAbbr;
if (settings.designator) designators = settings.designator;
if (settings.format) defaultFormat = settings.format;
if (settings.getDateOrdinal) getOrdinal = settings.getDateOrdinal;
if (settings.months) months = settings.months;
if (settings.monthsAbbr) monthsAbbr = settings.monthsAbbr;
}
if (!format) {
format = defaultFormat;
}
return format.replace(findPatterns, function (match, group1) {
var fn = handlers[group1];
return typeof fn === 'function' ? fn.call(self) : match;
}).replace(/["']/g, '');
};
}()),
getDayName = function (asAbbr) {
var n = this.getDay();
return asAbbr ? daysAbbr[n] : days[n];
},
getMonthName = function (asAbbr) {
var n = this.getMonth();
return asAbbr ? monthsAbbr[n] : months[n];
},
getOrdinal = (function () {
var os = 'th st nd rd th'.split(' ');
return function () {
var d = this.getDate();
return (d > 3 && d < 21) ? os[0] : os[Math.min(d % 10, 4)];
};
}()),
getDesignator = function () {
return this.getHours() >= 12 ? designators[1] : designators[0];
},
pad = (function () {
var p = '000000';
return function (obj, len, fromRight) {
return fromRight ?
(obj + p).slice(0, len ? Math.min(len, p.length) : 2) :
(p + obj).slice(-(len ? Math.min(len, p.length) : 2));
};
}());
// Expose the formatting method
// As a global function
//window.formatDate = function (date, format, options) {
// if(isNaN(+date) || !date.getDate) throw new Error('Not a valid date');
// return formatDate.call(date, format, options);
//};
// Or as a method on the Date object
Date.prototype.format = function (format, options) {
return formatDate.call(this, format, options);
};
}());