html运行实例（js_set_foreach）-搜寻教程库

代码示例：（标识：js_set_foreach）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript Set</h1>

<p>forEach() 方法为每个 Set 元素调用函数：</p>

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

<script>
// 创建 Set
const letters = new Set(["a","b","c"]);

// 列出所有元素
let text = "";
letters.forEach (function(value) {
  text += value + "<br>";
})

document.getElementById("demo").innerHTML = text;
</script>

</body>
</html>