javascript get random array value
//get random value from array
var colors = ["red","blue","green","yellow"];
var randColor = colors[Math.floor(Math.random() * colors.length)];javascript get random array value
//get random value from array
var colors = ["red","blue","green","yellow"];
var randColor = colors[Math.floor(Math.random() * colors.length)];random array javascript
const months = ["January", "February", "March", "April", "May", "June", "July"];
const random = Math.floor(Math.random() * months.length);
console.log(random, months[random]);generate random number array javascript from principal array
let numbers = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20],
generated = [];
for (let i = 0; i < 10; i++)
{
let random_index;
while(!random_index)
{
let tmp = Math.floor(Math.random() * numbers.length);
if( !generated.filter( (g) => numbers[tmp] == g).length )
random_index = tmp;
}
generated.push(numbers[random_index]);
}
console.log(generated);javascript generate random array
//This example is to generate an array with 40 random elements, with random values from 0 to 39
for (var a=[],i=0;i<40;++i) a[i]=i;
// http://stackoverflow.com/questions/962802#962890
function shuffle(array) {
var tmp, current, top = array.length;
if(top) while(--top) {
current = Math.floor(Math.random() * (top + 1));
tmp = array[current];
array[current] = array[top];
array[top] = tmp;
}
return array;
}
a = shuffle(a);Copyright © 2021 Codeinu
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