Underscore.JS sample方法

_.sample(list, [n])

var _ = require('underscore');

//Example: get a single random number
result = _.sample([1, 2, 3, 4, 5, 6])
console.log(result)

//Example: get two random numbers
result = _.sample([1, 2, 3, 4, 5, 6], 2)
console.log(result)

>node tester.js

5
[ 6, 4 ]