JavaScript算法相关

Array.apply(null, {length: N}).map(Function.call, Number);
Array.apply(0,Array(100)).map(function(item,index){return index})

var prime = function(len){
    var i,j;
    var arr = [];
     
  for(i = 1; i < len; i++){
    for(j=2; j < i; j++){  
      if(i%j === 0) {
         break;
      }
    }
     
    if(i <= j && i !=1){
      arr.push(i);
    }
    
  }
  return arr;
};
console.log(prime(100));