function getPrimeNumbers(limit){ var result = [2]; var is; if(limit < 2) return []; for(var i = 3, s; i <= limit; i += 2){ is = true; s = Math.sqrt(i); for(var j = 0, r, l = result.length; j <= l; j ++){ r = result[j]; if(r > s) break; if(i % r) continue; is = false; break; } is && result.push(i); } return result; }然后直接调用即可
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