--- # 主题列表：juejin, github, smartblue, cyanosis, channing-cyan, fancy, hydrogen, condensed-night-purple, greenwillow, v-green, vue-pro, healer-readable, mk-cute, jzman, geek-black, awesome-green, qklhk-chocolate # 贡献主题：https://github.com/xitu/juejin-markdown-themes theme: geek-black highlight: --- ## 1、封装倒计时 ![image.png](https://p9-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/c93fbbcbb0e74f919ab7598507d14909~tplv-k3u1fbpfcp-watermark.image?) - utils/countDown ```html ``` - 使用 `传的格式 2022-02-25 23:59:59` ```html

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``` ## 2、获取当前页面url参数 ```js /** * 获取当前页面URL参数 * @param 传入参数key返回value */ export function getUrlKey(name) { return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.href) || [""])[1].replace(/\+/g, '%20')) || null } ``` ## 3、判断是否是ie浏览器 ```js // 判断是否是ie浏览器 if (!!window.ActiveXObject || 'ActiveXObject' in window) { if (!sessionStorage.getItem('ieBrowser')) { this.ieBrowser = true } } else { this.ieBrowser = false } ```