html运行实例（eg_js_syntax_expressions

代码示例：（标识：eg_js_syntax_expressions_strings）

<!DOCTYPE html>
<html>
<body>

<h2>JavaScript 表达式</h2>

<p>表达式计算为值。</p>

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

<script>
document.getElementById("demo").innerHTML = "Bill" + " "  + "Gates";
</script>

</body>
</html>