examwin_web/js/exam_detail_img.js

$(function () {
  $("img").lazyload();
  const globaldata = {
    active: null,
    maxlength: null,
  };
  // 实现跳转
  let my_nav = $(".my-nav"), top = my_nav.offset().top;
  $(".my-nav").click(function (e) {
    if (e.target.className == "my-nav") return false;
    let active = Array.prototype.slice.call($(this).find("li")).indexOf(e.target);
    if (active == globaldata.active) return false;
    globaldata.active = active;
    $(this).find(".active").removeClass("active");
    $(e.target).addClass("active");
    // 获取跳转锚点到顶部的距离
    let title = $("#title").offset().top;
    let edi_answer = $("#edi-answer").offset().top;
    let interactive = $("#interactive").offset().top;
    let lis = $(this).find("li");
    let i = Array.prototype.slice.call(lis).indexOf($(e.target)[0]);
    // 储存锚点
    let maos = [title, edi_answer, interactive];
    $(window).scrollTop(maos[i]);
  })
  $(window).scroll(
    function () {
      let scrolltop = document.documentElement.scrollTop || document.body.scrollTop;
      if (scrolltop >= top) { my_nav.addClass("fixed"); } else {
        my_nav.removeClass("fixed")
      }
    }
  )
  // 查看更多
  $("[data-click='open']").click(function () {
    let bool = $(this).data("open");
    if (!bool) {
      $(this).data("open", true).children("span").text("收起阅读全部").parent().children("i").removeClass("glyphicon-chevron-down").addClass("glyphicon-chevron-up").parent().parent().parent().addClass("edi-body-height");
    } else {
      $(this).data("open", false).children("span").text("展开阅读全部").parent().children("i").removeClass("glyphicon-chevron-up").addClass("glyphicon-chevron-down").parent().parent().parent().removeClass("edi-body-height");
    }
  })

  // 不能实现的事件
  function warm () {
    alert("请在大联考App内登录后操作")
  }
  // $(".edi-open>span[data-click='open']").click(warm)
  $(".edi-user").click(warm)
  $(".choose").click(warm)

  // 默认 时间
  $(".pull-right>span").click(function () {
    $(this).addClass('active').siblings("span").removeClass("active");
  })
})