<!DOCTYPE html>
<html>
<body>
<p>如果一个或两个表达式为真，则 OR 运算符 (||) 返回 true，否则返回 false。</p>
<p id="demo"></p>
<script>
var x = 6;
var y = 3;
document.getElementById("demo").innerHTML =
(x === 5 || y === 5) + "<br>" +
(x === 6 || y === 5) + "<br>" +
(x === 6 || y === 3);
</script>
</body>
</html>