javascript - 用户查看弹出窗口更改变量值的次数

Question

我有一个在页面加载时自动加载的弹出窗口，它在关闭按钮上有一个计时器，可防止弹出窗口关闭 60 秒。它还有一个打印按钮，如果您按“g”键可以重新调用。

现在，我一直在尝试让计时器的时间量根据用户已经看到弹出窗口的次数而变化(即第 1 次:60 秒。第 2-4 次:45 秒。第 5+时间:30 秒)，由 counter 变量控制。我找到了 link1 , link2 , link3 , 和 link4我相信这会对我的问题有真正的帮助，但我无法成功地将它们合并到我的代码中。

请注意，计时器在代码段或 fiddle 中似乎不起作用尽管它在我的浏览器中确实有效。我的代码如下:

$(document).ready(function() {
    $(document).keypress(function(e){
        if(e.charCode === 65 || 103) {
             $('#PopUp').css("visibility", "visible"); 
             $('#PopUp').css("opacity", 1); 
        }
    });
    $(function(){
  
       $('#PopUp').css("visibility", "visible"); 
       $('#PopUp').css("opacity", 1); 
  
       });
  
  $( ".close" ).click(function() {

       $('#PopUp').css("visibility", "hidden"); 
       $('#PopUp').css("opacity", 0);
    });
});

        function printDiv()
        {
            var content = document.getElementById('content').innerHTML;
            var win = window.open();
            win.document.write(content);
            win.print();	// JavaScript Print Function
            win.close();	//It will close window after Print.
        }

  var counter = 60; 
  var setMsg = setInterval(function() {
    counter--;
    if(counter >= 60 && counter >= 70) {
  $("#close-message").html("1:" + (counter - 60));
} else if(counter >= 60 && counter < 70) {
  $("#close-message").html("1:0" + (counter - 60));
}  else if(counter >= 10) {
      $("#close-message").html("0:" + counter);
        } else if (counter > 0) {
      $("#close-message").html("0:0" + counter);
    } else {
      $( ".close" ).click(function() {
        $('#PopUp').css("visibility", "hidden"); 
        $('#PopUp').css("opacity", 0);
      });
      $("#timer").remove();
      clearInterval(setMsg);
    }
  }, 1000);
  
});

    .t {
        -webkit-transform-origin: top left;
        -moz-transform-origin: top left;
        -o-transform-origin: top left;
        -ms-transform-origin: top left;
        -webkit-transform: scale(0.25);
        -moz-transform: scale(0.25);
        -o-transform: scale(0.25);
        -ms-transform: scale(0.25);
        z-index: 2;
        position: absolute;
        white-space: pre;
        overflow: visible;
    }

    #t1_1{left:256px;top:35px;letter-spacing:0.1px;}
    #t2_1{left:334px;top:87px;word-spacing:-0.1px;}
    #t3_1{left:210px;top:123px;}
    #t4_1{left:238px;top:123px;word-spacing:-0.3px;}
    #t5_1{left:210px;top:141px;}
    #t6_1{left:210px;top:160px;}
    #t7_1{left:210px;top:179px;}
    #t8_1{left:238px;top:141px;letter-spacing:-0.1px;word-spacing:-0.1px;}
    #t9_1{left:238px;top:160px;word-spacing:-0.1px;}
    #ta_1{left:238px;top:179px;word-spacing:-0.1px;}
    #tb_1{left:343px;top:242px;letter-spacing:-0.1px;}
    #tc_1{left:210px;top:278px;}
    #td_1{left:210px;top:297px;}
    #te_1{left:210px;top:315px;}
    #tf_1{left:210px;top:334px;}
    #tg_1{left:238px;top:278px;word-spacing:-0.1px;}
    #th_1{left:238px;top:297px;word-spacing:-0.1px;}
    #ti_1{left:238px;top:315px;word-spacing:-0.2px;}
    #tj_1{left:238px;top:334px;word-spacing:-0.1px;}
    #tk_1{left:286px;top:393px;word-spacing:-0.1px;}
    #tl_1{left:210px;top:429px;}
    #tm_1{left:210px;top:448px;}
    #tn_1{left:210px;top:466px;}
    #to_1{left:210px;top:485px;}
    #tp_1{left:238px;top:429px;word-spacing:-0.3px;}
    #tq_1{left:238px;top:448px;word-spacing:-0.1px;}
    #tr_1{left:238px;top:466px;word-spacing:-0.1px;}
    #ts_1{left:238px;top:485px;word-spacing:-0.2px;}
    #tt_1{left:326px;top:544px;letter-spacing:-0.1px;}
    #tu_1{left:210px;top:580px;}
    #tv_1{left:210px;top:599px;}
    #tw_1{left:210px;top:618px;}
    #tx_1{left:238px;top:618px;}
    #ty_1{left:210px;top:636px;}
    #tz_1{left:238px;top:636px;}
    #t10_1{left:210px;top:655px;}
    #t11_1{left:238px;top:580px;word-spacing:-0.1px;}
    #t12_1{left:238px;top:599px;word-spacing:-0.2px;}
    #t13_1{left:238px;top:655px;word-spacing:-0.1px;}
    #t14_1{left:264px;top:716px;word-spacing:-0.2px;}
    #t15_1{left:210px;top:752px;}
    #t16_1{left:210px;top:771px;}
    #t17_1{left:210px;top:789px;}
    #t18_1{left:210px;top:808px;}
    #t19_1{left:238px;top:752px;word-spacing:-0.1px;}
    #t1a_1{left:238px;top:771px;word-spacing:-0.1px;}
    #t1b_1{left:238px;top:789px;word-spacing:-0.2px;}
    #t1c_1{left:238px;top:808px;word-spacing:-0.1px;}

    .s1_1{
        FONT-SIZE: 85.4px;
        FONT-FAMILY: Arial;
        color: rgb(0,0,0);
        FONT-WEIGHT: bold;
    }

    .s2_1{
        FONT-SIZE: 61.2px;
        FONT-FAMILY: Arial;
        color: rgb(0,0,0);
        FONT-WEIGHT: bold;
    }

    .s3_1{
        FONT-SIZE: 61.2px;
        FONT-FAMILY: SymbolMT_1z5;
        color: rgb(0,0,0);
    }

    .s4_1{
        FONT-SIZE: 61.2px;
        FONT-FAMILY: Arial;
        color: rgb(0,0,0);
    }

    div {
      padding-top: 10px;
    }

      .button {
        font-size: 1em;
        padding: 10px;
        color: #fff;
        border: 2px solid orange;
        border-radius: 20px/50px;
        text-decoration: none;
        cursor: pointer;
        transition: all 0.3s ease-out;
      }
      .button:hover {
        background: orange;
      }
      .overlay {
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.7);
        transition: opacity 500ms;
        visibility: visible;
        opacity: 1;
        height: 578%;
        width: 117.5%;
      }
      .overlay:target {
        visibility: hidden;
        opacity: 0;
        display:none;
      }
      .PopUp {
        margin: 50px auto;
        padding: 0px;
        background: #fff;
        border-radius: 5px;
        width: 60%;
        position: relative;
        transition: all 5s ease-in-out;
      }
      .PopUp .close {
        position: absolute;
        top: 20px;
        right: 30px;
        transition: all 200ms;
        font-size: 30px;
        font-weight: bold;
        text-decoration: none;
        color: #333;
      }
      .PopUp .close:hover {
        color: orange;
      }
      .PopUp .content {
        max-height: 117.5%;
        overflow: auto;
      }

.pdf1 {
width: 935px;
height: 1210px;
background-color: white;
-moz-transform: scale(1);
z-index: 0;
border: none;
  }

button {
    background-color: Transparent;
    background-repeat:no-repeat;
    border: none;
    cursor:pointer;
    overflow: hidden;
    outline:none;
    font-family: "Open Sans",sans-serif;
    font-weight: 700;
    color: #2D2D2D;
    font-size: 1rem;
    line-height: 1;
    text-align: center;
}
.Print {
    padding-bottom: 10px;
    margin-top: -5px;   
}

.close-message {
    font-family: "Open Sans",sans-serif;
    font-weight: 700;
    color: black;
    font-size: 0.9rem;
    line-height: 1;
    position: absolute;
    top: 15px;
    left: 9px;
}

.timer {
    position: absolute;
    top: 5px;
    right: 20px;
    z-index: 2;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
    <div id="PopUp" class="overlay">
        <div class="PopUp">
	<div class="timer" id="timer"><img src="http://i.imgur.com/87XaOWA.png"><p class="close-message" id="close-message"></p></div>

            <a class="close" href="#">&#10005;</a>
            <div class="content">
<div id="p1" class="p1" style="overflow: hidden; position: relative; width: 885px; height: 878px;">

   <!-- Begin page background -->
<div id="pg1Overlay" style="width:100%; height:100%; position:absolute; z-index:1; background-color:rgba(0,0,0,0); -webkit-user-select: none;"></div>
<div id="pg1" class="pg1" style="-webkit-user-select: none;"><img src="http://i.imgur.com/vcY42CW.png" id="pdf1" class="pdf1"></img></div>
   <!-- End page background -->


<!-- Begin text definitions (Positioned/styled in CSS) -->
<div id="t1_1" class="t s1_1">Player Selection Criteria Evaluator Cue Card</div>
<div id="t2_1" class="t s2_1">Skating – speed, quickness, technique</div>
<div id="t3_1" class="t s3_1">♦</div>
<div id="t4_1" class="t s4_1">Forward and Backward</div>
<div id="t5_1" class="t s3_1">♦</div>
<div id="t6_1" class="t s3_1">♦</div>
<div id="t7_1" class="t s3_1">♦</div>
<div id="t8_1" class="t s4_1">Turn both directions</div>
<div id="t9_1" class="t s4_1">Stop both directions</div>
<div id="ta_1" class="t s4_1">Are they in a good position for stability and strength</div>
<div id="tb_1" class="t s2_1">Passing – technique, control, vision</div>
<div id="tc_1" class="t s3_1">♦</div>
<div id="td_1" class="t s3_1">♦</div>
<div id="te_1" class="t s3_1">♦</div>
<div id="tf_1" class="t s3_1">♦</div>
<div id="tg_1" class="t s4_1">Forehand and Backhand</div>
<div id="th_1" class="t s4_1">To moving and stationary target</div>
<div id="ti_1" class="t s4_1">Vision – do they take a look and select best option</div>
<div id="tj_1" class="t s4_1">Advanced – board passes, chips, saucer passes</div>
<div id="tk_1" class="t s2_1">Puck Control – technique, open ice, confined space</div>
<div id="tl_1" class="t s3_1">♦</div>
<div id="tm_1" class="t s3_1">♦</div>
<div id="tn_1" class="t s3_1">♦</div>
<div id="to_1" class="t s3_1">♦</div>
<div id="tp_1" class="t s4_1">Open carry with speed</div>
<div id="tq_1" class="t s4_1">Execute dekes and fakes on the 1 on 1</div>
<div id="tr_1" class="t s4_1">Can they handle the puck in traffic and tight space</div>
<div id="ts_1" class="t s4_1">Ability to maintain control while being stick checked</div>
<div id="tt_1" class="t s2_1">Shooting – technique, accuracy, velocity</div>
<div id="tu_1" class="t s3_1">♦</div>
<div id="tv_1" class="t s3_1">♦</div>
<div id="tw_1" class="t s3_1">♦</div>
<div id="tx_1" class="t s4_1">Velocity</div>
<div id="ty_1" class="t s3_1">♦</div>
<div id="tz_1" class="t s4_1">Accuracy</div>
<div id="t10_1" class="t s3_1">♦</div>
<div id="t11_1" class="t s4_1">Forehand and backhand</div>
<div id="t12_1" class="t s4_1">Wrist shot, snap shot, slap shot</div>
<div id="t13_1" class="t s4_1">Shot Selection – do they select the best shot for the opportunity?</div>
<div id="t14_1" class="t s2_1">Game Understanding – Principles of Offence and Defence</div>
<div id="t15_1" class="t s3_1">♦</div>
<div id="t16_1" class="t s3_1">♦</div>
<div id="t17_1" class="t s3_1">♦</div>
<div id="t18_1" class="t s3_1">♦</div>
<div id="t19_1" class="t s4_1">Player understands positional play</div>
<div id="t1a_1" class="t s4_1">Player supports the puck on the defensive and offensive side of puck</div>
<div id="t1b_1" class="t s4_1">Player communicates with teammates</div>
<div id="t1c_1" class="t s4_1">Player has the ability to read and react.</div>
</div>
</div>
<div id="Print" class="Print" align="center">
<button onclick="printDiv()"><img src="http://i.imgur.com/HcXNoMC.png" /></button>
</div>
	</div>
</div>

Answer 1

你可以使用localStorage(不过期)，sessionStorage(持续 session )，或者cookies(持续到你设置的过期日期或用户删除他们)。 localStorage 和 sessionStorage 可能在某些较旧的浏览器中不受支持。

如果可用，这里是使用 sessionStorage 的代码。如果它不可用，它会回退到使用 cookie。如果您想使用 localStorage，只需将 sessionStorage 替换为 localStorage。

将 var counter = 60; 替换为以下代码:

// initialization
var counter = 60;
var timesVisited = 1;
var cookieExpirationDays = 5000;    // don't expire cookies for 5000 days
// test to see if localstorage/sessionStorage is available (localStorage has no expiration date)
if (typeof(Storage) !== "undefined") {
    counter = 60;
    timesVisited = sessionStorage.getItem("timesVisited");
    // first time
    if ((timesVisited == null) || (timesVisited < 1)){
        timesVisited = 1;
        sessionStorage.setItem("timesVisited", timesVisited);
        counter = 60;                            
    }
    // second time
    else if ((timesVisited >= 1) && (timesVisited <= 3)){
        timesVisited++;
        sessionStorage.setItem("timesVisited", timesVisited);
        counter = 45;
    }
    // third time
    else if (timesVisited >= 4){
        timesVisited++;
        sessionStorage.setItem("timesVisited", timesVisited);
        counter = 30;
    }
} 
// No localstorage/sessionStorage. Use cookies 
else {
    timesVisited = getCookie("timesVisited");
    console.log(timesVisited);
    // first time
    if ((timesVisited == "") || (timesVisited < 1)){
        timesVisited = 1;
        setCookie("timesVisited", timesVisited, cookieExpirationDays);
        counter = 60;                            
    }
    // second time
    else if ((timesVisited >= 1) && (timesVisited <= 3)){
        timesVisited++;
        setCookie("timesVisited", timesVisited, cookieExpirationDays);
        counter = 45;
    }
    // third time
    else if (timesVisited >= 4){
        timesVisited++;
        setCookie("timesVisited", timesVisited, cookieExpirationDays);
        counter = 30;
    }   
}