$p = get_posts(array('orderby' => 'rand', 'showposts' => 1));
echo '<a href="'.get_permalink($p[0]->ID).'">Random</a>';
I have been wanting to add a link to the header of this site that will randomly open a snippet zone post… Finally got around to it the other day – figured I’d post the lazy php code for it 😀
let _seed = 1234567;
// Deterministic pseudo-random float in the interval [ 0, 1 ]function seededRandom( s ) {
if ( s !== undefined ) _seed = s % 2147483647;
// Park-Miller algorithm_seed = _seed * 16807 % 2147483647;
return ( _seed - 1 ) / 2147483646;
}Straight from the THREE.js source code – a fun and simple seeded random. The best libraries are always filled with gems like this…
If I were going to use this I would do a couple things out of pure preference:
let seed = 1234567;
const setSeed = newSeed => seed = newSeed
function seededRand() {
// Park-Miller algorithmseed *= 16807 % 0x7fffffff;
return (seed - 1) / 0x7fffffff;
}// try it out:console.log('one', seededRand());
console.log('two', seededRand());
console.log('three', seededRand());
seed = 9999
console.log('one new seed', seededRand());
console.log('one new seed', seededRand());
seed = 1234567;
console.log('one old seed', seededRand());
If you’re wondering about what this is doing… read more about it here.
myEl.parentNode.appendChild(myEl);
This will make an element the top most of all of its siblings…
document.body.innerHTML += `
<div>
<button>one</button>
<button>two</button>
<button>three</button>
<button>four</button>
</div>
<style>
button { display: block; cursor: pointer; }
</style>
`;document.addEventListener('click', e => {
if (e.target.tagName === 'BUTTON') {
e.target.parentNode.appendChild(e.target);
}});
Clicking on any button will bring it to the top most position within its parent.
function bindAll(target) {
const keys = Object.getOwnPropertyNames(target.constructor.prototype);
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
const propOrMethod = target[key];
if (typeof propOrMethod === 'function') {
target[key] = target[key].bind(target);
} }}class Test {constructor() {
bindAll(this);
document.addEventListener('click', this.onClick);
}onClick(e) {
console.log('click', this);
}otherMethod(e) {
console.log('test', this);
}}const test = new Test();
setInterval(test.otherMethod, 1000);
This is useful when you know you need many methods of a given class to be bound to the classes instance. Another way to do this is to selectively use instance properties:
class Test {constructor() {
document.addEventListener('click', this.onClick);
}onClick = e => {
console.log('click', this);
}otherMethod e => {
console.log('test', this);
}}Avoiding classes is another way to not have to deal with this issue 😉
r={valueOf:_=>Math.random()}
console.log(+r)
console.log(+r)
console.log(+r)
Use valueOf to shorten function calls. I learned this trick over at stackexchange codegolf here from user cyoce.