1603wylkz1/lib/random.js

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module.exports.rad = function(arr,item){

var newarr = [];
var len = arr.length;
  for(;;){

    if(newarr.length<item){
        var ind = Math.floor(Math.random()*len);
         if(newarr.indexOf(arr[ind]) === -1){
            newarr.push(arr[ind]);
         }
    }else{
   break;
    }

  }

  return newarr;

}