Method: 1. Use "for(var i=2;i
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>Output result:
javascript learning tutorial 】
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