examwin_web/js/exam_detail_img.js

$(function () {
  $("img").lazyload();
  const globaldata = {
    active: null,
    maxlength: null,
  };
  // 实现跳转
  $(".my-nav").click(function (e) {
    let active = Array.prototype.slice.call($(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]);
  })
  // 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");
    }
  })

  // 进度条拖动
  window.onresize = function () {
    globaldata.maxlength = $(".pro").width();
  }
  // 进度条宽度
  let maxlength = globaldata.maxlength || $(".pro").width();
  // 移动dom
  let movedom = $(".pro>.icon");
  //起始坐标
  let startX = null;
  // 分数
  let gross = $(".pro").data("gross");
  // 进度条
  let showdom = $(".pro>.pro-content");
  // 显示数值
  let pro_show = $(".pro>.pro-show");

  movedom.mousedown(function (e) {
    e.preventDefault();
    $(".prog>.title").hide();
    $(".pro>.pro-title").hide();
    startX = e.pageX;
    $(this).css('left') ? $(this).css('left') : $(this).css('left', '0px');
    let startLeft = parseInt($(this).css('left'));
    let $that = $(this);
    document.onmousemove = function (e) {
      e.preventDefault();
      let moveX = (e.pageX - startX) > 0 ? true : false;
      let movesection = startLeft + (e.pageX - startX);
      if (movesection >= 0 && movesection <= maxlength) {
        let percent = (movesection / maxlength).toFixed(4) * gross;
        percent = Math.round(percent) + "分";
        let move = movesection + "px";
        showdom.css("width", move);
        pro_show.css("left", move).text(percent);
        $that.css("left", move)
        window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty();
      }
    }
  })
  movedom.mouseup(function () { document.onmousemove = null })
  movedom.mouseleave(function () { document.onmousemove = null })
  // 手机端更改
  let x1, y1, oldTime, newTime, olfLeft, newLeft;
  movedom[0].addEventListener("touchstart", function (e) {
    e.preventDefault();
    $(".prog>.title").hide();
    $(".pro>.pro-title").hide();
    var touches = e.changedTouches;
    x1 = touches[0].pageX;
    olfLeft = this.offsetLeft;
  }, false)

  movedom[0].addEventListener("touchmove", function (e) {
    e.preventDefault();
    var x2 = e.changedTouches[0].pageX;
    newLeft = x2 - x1;
    nowLeft = olfLeft + newLeft;
    if (nowLeft < 0) {
      nowLeft = 0;
    }
    if (nowLeft > maxlength) {
      nowLeft = maxlength;
    }
    showdom.css("width", nowLeft + "px");
    $(this).css("left", nowLeft + "px");
    let percent = nowLeft / maxlength * gross;
    percent = Math.round(percent);
    pro_show.css("left", nowLeft).text(percent);
  }, false)
  function handleEnd (e) {
    this.removeEventListener("touchmove", handleEnd, false);
  }
  movedom[0].addEventListener("touchend", function () {
    this.removeEventListener("touchmove", handleEnd, false);
  }, false)

  // 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");
  })
})