How to find prime numbers from 1 to 100 in javascript-Front-end Q&A-php.cn

How to find prime numbers from 1 to 100 in javascript

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Release： 2022-01-17 16:51:37

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Method: 1. Use "for(var i=2;i

How to find prime numbers from 1 to 100 in javascript

The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.

How to find prime numbers from 1 to 100 in javascript

To find prime numbers, you must first understand the concept of prime numbers: except itself and 1, other numbers They are all inexhaustible.

The example is as follows:

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>求1到100之间所有的质数</title>
    </head>
    <body>
        <script type="text/javascript">
            for (var i=2;i<=100;i++) {
                //假设i是质数，
                var b=true;
                //求证的过程，在1到i之间有没有能被整数整除的数
                for (var j=2;j<i;j++) {
                    if(i%j==0){
                        //有数被整除了，就证明这个数不是质数
                        b=false;
                        break;
                    }
                }
                if(b==true){
                    document.write(i+"<br />")
                }
            }
        </script>
    </body>
</html>

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Output result:

How to find prime numbers from 1 to 100 in javascript

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