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:
javascript advanced tutorial]
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