html运行实例（eg_js_operator_subtraction）-搜寻教程库

代码示例：（标识：eg_js_operator_subtraction）

<!DOCTYPE html>
<html>
<body>

<h1>- 运算符</h1>

<p id="demo"></p>

<script>
var x = 7;
var y = 8;
var z = x - y;
document.getElementById("demo").innerHTML = z
</script>

</body>
</html>