Question

I want to pick random number of inputs randomly in an array of input elements..
If i use the below method i Can get one random item

jQuery.jQueryRandom = 0;
jQuery.extend(jQuery.expr[":"],
 {
  random: function(a, i, m, r) {
    if (i == 0) {
        jQuery.jQueryRandom = Math.floor(Math.random() * r.length);
    };
    return i == jQuery.jQueryRandom;
 }
});

$("input:random").prop('id')

But I want random number i=of items to be picked randomly in an array.

Answer 1

You can use jQuery’s .filter() method with a function:

$('div').filter(function(){
    return (Math.round(Math.random()) == 1);
}).css({background: 'red'});

jsFiddle example