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boolean.html
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<!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>Javascript</title>
</head>
<body>
<script>
// // true
// var isMale = true;
// var isOld = true;
// var isOldOrMale = isOld && isMale;
// alert(isOldOrMale);
// // true
// var isFemale = false;
// var isOld = true;
// var isOldOrFemale = isOld || isFemale;
// alert(isOldOrFemale);
// // false
// var isFemale = false;
// var isOld = true;
// var isMale = ! isFemale;
// alert(isFemale);
// // == true
// alert(0 == false);
// alert(1 == true)
// // === false
// alert(0 === false);
// var x = 5;
// x++;
// alert(x);
// if else
var x = 11;
// var y = x < 10 ? x : 10;
var y;
if (x < 10)
{
y = x;
}
else
{
y = 10;
}
alert(y);
</script>
</body>
</html>