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JavaScript uses bitwise operators to determine odd and even numbers_javascript tips

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Release： 2016-05-16 15:57:19

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The example in this article describes how JavaScript uses bitwise operators to determine odd and even numbers. Share it with everyone for your reference. The specific implementation method is as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>javascript 判断奇偶数</title>
</head>
<body>
<script>
function checkNum(num) {
 var numrel="";
 if((num&1)===0){
  numrel="这是一个偶数";
 }else{
  numrel="这是一个奇数";
 }
 return numrel;
}
var numtest=checkNum(5);
alert(numtest);//弹出提示“这是一个奇数”
</script>
</body>
</html>

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I hope this article will be helpful to everyone’s JavaScript programming design.

Related labels：

javascript Bit operators even odd number

source：php.cn

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