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How to determine odd and even numbers in javascript

WBOYOriginal: 2021-12-07 14:35:1717155browse

In JavaScript, you can use the if statement, "%" and "==" operators to determine whether the value is divisible by 2, and then determine whether the value is an odd or even number. The syntax is "if(value%2= =0){Even number execution code;}else{Odd number execution code;}".

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

How to find odd and even numbers in JavaScript

In JavaScript, you can use if statements, % and == operators to find odd and even numbers, example As follows:

<!DOCTYPE html>
<html lang="en">
<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>
</head>
<body>
<body>
<input type="text" id="input1" value="" />
      <button id="btn">点击</button>
</body>
<script type="text/javascript">
btn.onclick=function(){
      if(input1.value%2==0){
          alert("这是个偶数");
      }else{
          alert("这是个奇数");
  }
</script>
</html>

Output result:

How to determine odd and even numbers in javascript

##[Recommended learning:

javascript advanced tutorial]

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JavaScript 运算符 if

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