vue-carousel-3d
Version:
Beautiful, flexible and touch supported 3D Carousel for Vue.js
106 lines (86 loc) • 2.78 kB
JavaScript
/**
* cuid.js
* Collision-resistant UID generator for browsers and node.
* Sequential for fast db lookups and recency sorting.
* Safe for element IDs and server-side lookups.
*
* Extracted from CLCTR
*
* Copyright (c) Eric Elliott 2012
* MIT License
*/
/*global window, navigator, document, require, process, module */
(function (app) {
'use strict';
var namespace = 'cuid',
c = 0,
blockSize = 4,
base = 36,
discreteValues = Math.pow(base, blockSize),
pad = function pad(num, size) {
var s = "000000000" + num;
return s.substr(s.length-size);
},
randomBlock = function randomBlock() {
return pad((Math.random() *
discreteValues << 0)
.toString(base), blockSize);
},
safeCounter = function () {
c = (c < discreteValues) ? c : 0;
c++; // this is not subliminal
return c - 1;
},
api = function cuid() {
// Starting with a lowercase letter makes
// it HTML element ID friendly.
var letter = 'c', // hard-coded allows for sequential access
// timestamp
// warning: this exposes the exact date and time
// that the uid was created.
timestamp = (new Date().getTime()).toString(base),
// Prevent same-machine collisions.
counter,
// A few chars to generate distinct ids for different
// clients (so different computers are far less
// likely to generate the same id)
fingerprint = api.fingerprint(),
// Grab some more chars from Math.random()
random = randomBlock() + randomBlock();
counter = pad(safeCounter().toString(base), blockSize);
return (letter + timestamp + counter + fingerprint + random);
};
api.slug = function slug() {
var date = new Date().getTime().toString(36),
counter,
print = api.fingerprint().slice(0,1) +
api.fingerprint().slice(-1),
random = randomBlock().slice(-2);
counter = safeCounter().toString(36).slice(-4);
return date.slice(-2) +
counter + print + random;
};
api.fingerprint = function nodePrint() {
var os = require('os'),
padding = 2,
pid = pad((process.pid).toString(36), padding),
hostname = os.hostname(),
length = hostname.length,
hostId = pad((hostname)
.split('')
.reduce(function (prev, char) {
return +prev + char.charCodeAt(0);
}, +length + 36)
.toString(36),
padding);
return pid + hostId;
};
// don't change anything from here down.
if (app.register) {
app.register(namespace, api);
} else if (typeof module !== 'undefined') {
module.exports = api;
} else {
app[namespace] = api;
}
}(this.applitude || this));