<script>
// 使用 JavaScript 获取去年的年份
var currentYear = new Date().getFullYear();
var previousYear = currentYear – 1;
// 在 HTML 元素中显示去年的年份
var previousYearElement = document.getElementById(“previousYear”);
previousYearElement.textContent = “” + previousYear;
</script>
调取标签：<div id=”previousYear”></div>
