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JS to print prime numbers between 1-100 and calculate the total number of optimized versions

2022-06-27 07:35:00 【I am the sun?】

Code ：

<!DOCTYPE html>
<html lang="zh">
<head>
	<meta charset="UTF-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
	<meta http-equiv="X-UA-Compatible" content="ie=edge" />
	<title>Document</title>
	<script type="text/javascript">
		var sum = 0;
		for(var i = 1;i <= 100;i++){
			var flag = true;
			
			if(i == 1)
			flag = false;
			for(var j = 2;j <= Math.sqrt(i);j++){
				
				if(i % j == 0){
					flag = false;
					break;
				}
			}
			if(flag){
					document.write(i + "&nbsp;&nbsp;&nbsp;&nbsp;");
					sum++;
			}
		}
		document.write("<br /> Primes in all ：" + sum +  "  individual .");
	</script>
</head>
<body>
	
</body>
</html>

The operation results are as follows ：
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explain ：

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In terms of mathematical factors ：
4 The factors that affect it are ：14,22
therefore , Count to 2,4 It can be disassembled into 2 了 , You should quit
Empathy ：
9 The factors that affect it are ：19,33
therefore , Count to 3, You can quit
Empathy ：
36 The factors that affect it are ：136,218,312,49,66. The biggest is 66
Count to , Even the largest 6*6 You have to quit
therefore , The number after square root is rounded , You have to quit . It saves a lot of time .

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本文为[I am the sun?]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/178/202206270720099312.html

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