<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
var num1 = parseInt(prompt('输入第一个数字'));//parseInt()强制转换字符串类型
var num2 = parseInt(prompt('输入第二个数字'));
var num3 = parseInt(prompt('输入第三个数字'));
var max = 0;
var str = [num1,num2,num3];
function getmax(num1,num2,num3) {
for (var i = 0; i < str.length; i++) {
if (max < str[i] ) {
max = str[i];
}
}
return(max);
}
var str2 = getmax(num1,num2,num3);
alert(str2);
</script>
</head>
<body>
</body>
</html>
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