class Util {

  //节流throttle代码：
  throttle(fn,delay) {
    let canRun = true; // 通过闭包保存一个标记
    return function () {
      if (!canRun) return;
      canRun = false;
      setTimeout(() => {
        fn.apply(this, arguments);
        canRun = true;
      }, delay);
    };
  }

  footer () {
    var body = $("body")
    var currentPath = location.href.split("page/")[1];

    var html = `
    <ul class="footer clear">
      ${
        config.footer.map((v,i) => {
          var isCurrent = v.path.includes(currentPath);
          return `
           <li class="${ isCurrent ? 'footer_active' : '' }">
              <a href="${v.path}">
                <img src="${isCurrent ? `../img/${v.icon}1.png` : `../img/${v.icon}.png`}">
                <span>${v.title}</span>
              </a>
            </li>
          `
        }).toString().replaceAll(",","")
      }
    </ul>
    `

    body.append(html)

  }

  query(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) return unescape(r[2]);
    return null;
  }


}

var {footer, query, throttle} = new Util();