html运行实例（eg_js_datatypes_addstrings

代码示例：（标识：eg_js_datatypes_addstrings_2）

<!DOCTYPE html>
<html>
<body>

<h2>JavaScript 数据类型</h2>

<p>当字符串和数值相加时，JavaScript 将把数值视作字符串。</p>

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

<script>
var x = "Porsche" + 911;
document.getElementById("demo").innerHTML = x;
</script>

</body>
</html>