How do I select random values from an array in Javascript or Jquery? [duplicate]

Answer 1

Use for() to iterating random select

var arrayNum = ['One', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine'];  
var selected = [];
for (var i = 0; i < 3; i++){
    selected[i] = arrayNum[Math.floor(Math.random() * arrayNum.length)];
}
console.log(selected);

If you want to select diffrent item, you need to checking selected item before inserting in new array.

var arrayNum = ['One', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine'];  
var selected = [];
for (var i = 0; i < 3; i++){
    rand();
}
console.log(selected);

function rand(){
    var ran = arrayNum[Math.floor(Math.random() * arrayNum.length)];  
    if (selected.indexOf(ran) == -1)
        selected.push(ran);
    else
         rand();
}