MediaQueryListEvent：media 属性

media 是 MediaQueryListEvent 接口的只读属性，它是一个字符串，表示序列化后的媒体查询。

值

表示序列化后的媒体查询的字符串。

示例

js
const para = document.querySelector("p"); // This is the UI element where to display the text
const mql = window.matchMedia("(max-width: 600px)");

mql.addEventListener("change", (event) => {
  if (event.matches) {
    // The viewport is 600 pixels wide or less
    para.textContent = "This is a narrow screen — less than 600px wide.";
    document.body.style.backgroundColor = "red";
  } else {
    // The viewport is more than 600 pixels wide
    para.textContent = "This is a wide screen — more than 600px wide.";
    document.body.style.backgroundColor = "blue";
  }

  console.log(event.media);
});

规范

规范
CSSOM 视图模块
# dom-mediaquerylistevent-media

浏览器兼容性

BCD 表格仅在浏览器中加载

另请参阅