js-pace loading-progress 百分比戴入畫面

預戴畫面主要是讓頁面內容如果要下戴的多的話可以用來緩衝的一個方式，不會讓畫面空白太久。因為發開案子客戶覺得原本簡易的gif動畫與轉場會不知道戴入的時間要花多久，因此要求要用百分比與進度條來顯示下戴進度

<head>
<!-- cdn -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/pace/1.0.2/pace.min.js"></script>
<script data-pace-options='{ "ajax": false }' src='pace.js'></script>
</head>
<body>
<iframe class="my-page" src="https://stockbucks.imagedj.com/index.php?r=tubar%2Fsrt&page=1&keywords=asian+girl+eye" frameborder="0"></iframe>
</body>

<head>

</head>

<body>

</body>

paceOptions = {
  ajax: false,
  document: false,
  eventLag: false,
  elements: {
    selectors: ['html']
  }
};

paceOptions = {

ajax: false,

document: false,

eventLag: false,

elements: {

selectors: ['html']

}

};

/* 自定iframe相關樣式 */
body, html { 
	margin:0px; padding:0px; 
	height: 100%; width: 100%;
	}
iframe { height:100vh; width:100vw; margin:0px; }
/* /自定iframe相關樣式 */

.pace {
  -webkit-pointer-events: none;
  pointer-events: none;

  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;

  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  -o-box-sizing: border-box;
  box-sizing: border-box;

  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  border-radius: 10px;

  -webkit-background-clip: padding-box;
  -moz-background-clip: padding;
  background-clip: padding-box;

  z-index: 2000;
  position: fixed;
  margin: auto;
  top: 12px;
  left: 0;
  right: 0;
  bottom: 0;
  width: 200px;
  height: 50px;
  overflow: hidden;
}

.pace .pace-progress {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  -o-box-sizing: border-box;
  box-sizing: border-box;

  -webkit-border-radius: 2px;
  -moz-border-radius: 2px;
  border-radius: 2px;

  -webkit-background-clip: padding-box;
  -moz-background-clip: padding;
  background-clip: padding-box;

  -webkit-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);

  display: block;
  position: absolute;
  right: 100%;
  margin-right: -7px;
  width: 93%;
  top: 7px;
  height: 14px;
  font-size: 12px;
  background: #29d;
  color: #29d;
  line-height: 60px;
  font-weight: bold;
  font-family: Helvetica, Arial, "Lucida Grande", sans-serif;

  -webkit-box-shadow: 120px 0 #fff, 240px 0 #fff;
  -ms-box-shadow: 120px 0 #fff, 240px 0 #fff;
  box-shadow: 120px 0 #fff, 240px 0 #fff;
}

.pace .pace-progress:after {
  content: attr(data-progress-text);
  display: inline-block;
  position: fixed;
  width: 45px;
  text-align: right;
  right: 0;
  padding-right: 16px;
  top: 4px;
}

.pace .pace-progress[data-progress-text="0%"]:after { right: -200px }
.pace .pace-progress[data-progress-text="1%"]:after { right: -198.14px }
.pace .pace-progress[data-progress-text="2%"]:after { right: -196.28px }
.pace .pace-progress[data-progress-text="3%"]:after { right: -194.42px }
.pace .pace-progress[data-progress-text="4%"]:after { right: -192.56px }
.pace .pace-progress[data-progress-text="5%"]:after { right: -190.7px }
.pace .pace-progress[data-progress-text="6%"]:after { right: -188.84px }
.pace .pace-progress[data-progress-text="7%"]:after { right: -186.98px }
.pace .pace-progress[data-progress-text="8%"]:after { right: -185.12px }
.pace .pace-progress[data-progress-text="9%"]:after { right: -183.26px }
.pace .pace-progress[data-progress-text="10%"]:after { right: -181.4px }
.pace .pace-progress[data-progress-text="11%"]:after { right: -179.54px }
.pace .pace-progress[data-progress-text="12%"]:after { right: -177.68px }
.pace .pace-progress[data-progress-text="13%"]:after { right: -175.82px }
.pace .pace-progress[data-progress-text="14%"]:after { right: -173.96px }
.pace .pace-progress[data-progress-text="15%"]:after { right: -172.1px }
.pace .pace-progress[data-progress-text="16%"]:after { right: -170.24px }
.pace .pace-progress[data-progress-text="17%"]:after { right: -168.38px }
.pace .pace-progress[data-progress-text="18%"]:after { right: -166.52px }
.pace .pace-progress[data-progress-text="19%"]:after { right: -164.66px }
.pace .pace-progress[data-progress-text="20%"]:after { right: -162.8px }
.pace .pace-progress[data-progress-text="21%"]:after { right: -160.94px }
.pace .pace-progress[data-progress-text="22%"]:after { right: -159.08px }
.pace .pace-progress[data-progress-text="23%"]:after { right: -157.22px }
.pace .pace-progress[data-progress-text="24%"]:after { right: -155.36px }
.pace .pace-progress[data-progress-text="25%"]:after { right: -153.5px }
.pace .pace-progress[data-progress-text="26%"]:after { right: -151.64px }
.pace .pace-progress[data-progress-text="27%"]:after { right: -149.78px }
.pace .pace-progress[data-progress-text="28%"]:after { right: -147.92px }
.pace .pace-progress[data-progress-text="29%"]:after { right: -146.06px }
.pace .pace-progress[data-progress-text="30%"]:after { right: -144.2px }
.pace .pace-progress[data-progress-text="31%"]:after { right: -142.34px }
.pace .pace-progress[data-progress-text="32%"]:after { right: -140.48px }
.pace .pace-progress[data-progress-text="33%"]:after { right: -138.62px }
.pace .pace-progress[data-progress-text="34%"]:after { right: -136.76px }
.pace .pace-progress[data-progress-text="35%"]:after { right: -134.9px }
.pace .pace-progress[data-progress-text="36%"]:after { right: -133.04px }
.pace .pace-progress[data-progress-text="37%"]:after { right: -131.18px }
.pace .pace-progress[data-progress-text="38%"]:after { right: -129.32px }
.pace .pace-progress[data-progress-text="39%"]:after { right: -127.46px }
.pace .pace-progress[data-progress-text="40%"]:after { right: -125.6px }
.pace .pace-progress[data-progress-text="41%"]:after { right: -123.74px }
.pace .pace-progress[data-progress-text="42%"]:after { right: -121.88px }
.pace .pace-progress[data-progress-text="43%"]:after { right: -120.02px }
.pace .pace-progress[data-progress-text="44%"]:after { right: -118.16px }
.pace .pace-progress[data-progress-text="45%"]:after { right: -116.3px }
.pace .pace-progress[data-progress-text="46%"]:after { right: -114.44px }
.pace .pace-progress[data-progress-text="47%"]:after { right: -112.58px }
.pace .pace-progress[data-progress-text="48%"]:after { right: -110.72px }
.pace .pace-progress[data-progress-text="49%"]:after { right: -108.86px }
.pace .pace-progress[data-progress-text="50%"]:after { right: -107px }
.pace .pace-progress[data-progress-text="51%"]:after { right: -105.14px }
.pace .pace-progress[data-progress-text="52%"]:after { right: -103.28px }
.pace .pace-progress[data-progress-text="53%"]:after { right: -101.42px }
.pace .pace-progress[data-progress-text="54%"]:after { right: -99.56px }
.pace .pace-progress[data-progress-text="55%"]:after { right: -97.7px }
.pace .pace-progress[data-progress-text="56%"]:after { right: -95.84px }
.pace .pace-progress[data-progress-text="57%"]:after { right: -93.98px }
.pace .pace-progress[data-progress-text="58%"]:after { right: -92.12px }
.pace .pace-progress[data-progress-text="59%"]:after { right: -90.26px }
.pace .pace-progress[data-progress-text="60%"]:after { right: -88.4px }
.pace .pace-progress[data-progress-text="61%"]:after { right: -86.53999999999999px }
.pace .pace-progress[data-progress-text="62%"]:after { right: -84.68px }
.pace .pace-progress[data-progress-text="63%"]:after { right: -82.82px }
.pace .pace-progress[data-progress-text="64%"]:after { right: -80.96000000000001px }
.pace .pace-progress[data-progress-text="65%"]:after { right: -79.1px }
.pace .pace-progress[data-progress-text="66%"]:after { right: -77.24px }
.pace .pace-progress[data-progress-text="67%"]:after { right: -75.38px }
.pace .pace-progress[data-progress-text="68%"]:after { right: -73.52px }
.pace .pace-progress[data-progress-text="69%"]:after { right: -71.66px }
.pace .pace-progress[data-progress-text="70%"]:after { right: -69.8px }
.pace .pace-progress[data-progress-text="71%"]:after { right: -67.94px }
.pace .pace-progress[data-progress-text="72%"]:after { right: -66.08px }
.pace .pace-progress[data-progress-text="73%"]:after { right: -64.22px }
.pace .pace-progress[data-progress-text="74%"]:after { right: -62.36px }
.pace .pace-progress[data-progress-text="75%"]:after { right: -60.5px }
.pace .pace-progress[data-progress-text="76%"]:after { right: -58.64px }
.pace .pace-progress[data-progress-text="77%"]:after { right: -56.78px }
.pace .pace-progress[data-progress-text="78%"]:after { right: -54.92px }
.pace .pace-progress[data-progress-text="79%"]:after { right: -53.06px }
.pace .pace-progress[data-progress-text="80%"]:after { right: -51.2px }
.pace .pace-progress[data-progress-text="81%"]:after { right: -49.34px }
.pace .pace-progress[data-progress-text="82%"]:after { right: -47.480000000000004px }
.pace .pace-progress[data-progress-text="83%"]:after { right: -45.62px }
.pace .pace-progress[data-progress-text="84%"]:after { right: -43.76px }
.pace .pace-progress[data-progress-text="85%"]:after { right: -41.9px }
.pace .pace-progress[data-progress-text="86%"]:after { right: -40.04px }
.pace .pace-progress[data-progress-text="87%"]:after { right: -38.18px }
.pace .pace-progress[data-progress-text="88%"]:after { right: -36.32px }
.pace .pace-progress[data-progress-text="89%"]:after { right: -34.46px }
.pace .pace-progress[data-progress-text="90%"]:after { right: -32.6px }
.pace .pace-progress[data-progress-text="91%"]:after { right: -30.740000000000002px }
.pace .pace-progress[data-progress-text="92%"]:after { right: -28.880000000000003px }
.pace .pace-progress[data-progress-text="93%"]:after { right: -27.02px }
.pace .pace-progress[data-progress-text="94%"]:after { right: -25.16px }
.pace .pace-progress[data-progress-text="95%"]:after { right: -23.3px }
.pace .pace-progress[data-progress-text="96%"]:after { right: -21.439999999999998px }
.pace .pace-progress[data-progress-text="97%"]:after { right: -19.58px }
.pace .pace-progress[data-progress-text="98%"]:after { right: -17.72px }
.pace .pace-progress[data-progress-text="99%"]:after { right: -15.86px }
.pace .pace-progress[data-progress-text="100%"]:after { right: -14px }


.pace .pace-activity {
  position: absolute;
  width: 100%;
  height: 28px;
  z-index: 2001;
  box-shadow: inset 0 0 0 2px #29d, inset 0 0 0 7px #FFF;
  border-radius: 10px;
}

.pace.pace-inactive {
  display: none;
}

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/* 自定iframe相關樣式 */

body, html {

margin:0px; padding:0px;

height: 100%; width: 100%;

}

iframe { height:100vh; width:100vw; margin:0px; }

/* /自定iframe相關樣式 */

.pace {

-webkit-pointer-events: none;

pointer-events: none;

-webkit-user-select: none;

-moz-user-select: none;

user-select: none;

-webkit-box-sizing: border-box;

-moz-box-sizing: border-box;

-ms-box-sizing: border-box;

-o-box-sizing: border-box;

box-sizing: border-box;

-webkit-border-radius: 10px;

-moz-border-radius: 10px;

border-radius: 10px;

-webkit-background-clip: padding-box;

-moz-background-clip: padding;

background-clip: padding-box;

z-index: 2000;

position: fixed;

margin: auto;

top: 12px;

left: 0;

right: 0;

bottom: 0;

width: 200px;

height: 50px;

overflow: hidden;

}

.pace .pace-progress {

-webkit-box-sizing: border-box;

-moz-box-sizing: border-box;

-ms-box-sizing: border-box;

-o-box-sizing: border-box;

box-sizing: border-box;

-webkit-border-radius: 2px;

-moz-border-radius: 2px;

border-radius: 2px;

-webkit-background-clip: padding-box;

-moz-background-clip: padding;

background-clip: padding-box;

-webkit-transform: translate3d(0, 0, 0);

transform: translate3d(0, 0, 0);

display: block;

position: absolute;

right: 100%;

margin-right: -7px;

width: 93%;

top: 7px;

height: 14px;

font-size: 12px;

background: #29d;

color: #29d;

line-height: 60px;

font-weight: bold;

font-family: Helvetica, Arial, "Lucida Grande", sans-serif;

-webkit-box-shadow: 120px 0 #fff, 240px 0 #fff;

-ms-box-shadow: 120px 0 #fff, 240px 0 #fff;

box-shadow: 120px 0 #fff, 240px 0 #fff;

}

.pace .pace-progress:after {

content: attr(data-progress-text);

display: inline-block;

position: fixed;

width: 45px;

text-align: right;

right: 0;

padding-right: 16px;

top: 4px;

}

.pace .pace-progress[data-progress-text="0%"]:after { right: -200px }

.pace .pace-progress[data-progress-text="1%"]:after { right: -198.14px }

.pace .pace-progress[data-progress-text="2%"]:after { right: -196.28px }

.pace .pace-progress[data-progress-text="3%"]:after { right: -194.42px }

.pace .pace-progress[data-progress-text="4%"]:after { right: -192.56px }

.pace .pace-progress[data-progress-text="5%"]:after { right: -190.7px }

.pace .pace-progress[data-progress-text="6%"]:after { right: -188.84px }

.pace .pace-progress[data-progress-text="7%"]:after { right: -186.98px }

.pace .pace-progress[data-progress-text="8%"]:after { right: -185.12px }

.pace .pace-progress[data-progress-text="9%"]:after { right: -183.26px }

.pace .pace-progress[data-progress-text="10%"]:after { right: -181.4px }

.pace .pace-progress[data-progress-text="11%"]:after { right: -179.54px }

.pace .pace-progress[data-progress-text="12%"]:after { right: -177.68px }

.pace .pace-progress[data-progress-text="13%"]:after { right: -175.82px }

.pace .pace-progress[data-progress-text="14%"]:after { right: -173.96px }

.pace .pace-progress[data-progress-text="15%"]:after { right: -172.1px }

.pace .pace-progress[data-progress-text="16%"]:after { right: -170.24px }

.pace .pace-progress[data-progress-text="17%"]:after { right: -168.38px }

.pace .pace-progress[data-progress-text="18%"]:after { right: -166.52px }

.pace .pace-progress[data-progress-text="19%"]:after { right: -164.66px }

.pace .pace-progress[data-progress-text="20%"]:after { right: -162.8px }

.pace .pace-progress[data-progress-text="21%"]:after { right: -160.94px }

.pace .pace-progress[data-progress-text="22%"]:after { right: -159.08px }

.pace .pace-progress[data-progress-text="23%"]:after { right: -157.22px }

.pace .pace-progress[data-progress-text="24%"]:after { right: -155.36px }

.pace .pace-progress[data-progress-text="25%"]:after { right: -153.5px }

.pace .pace-progress[data-progress-text="26%"]:after { right: -151.64px }

.pace .pace-progress[data-progress-text="27%"]:after { right: -149.78px }

.pace .pace-progress[data-progress-text="28%"]:after { right: -147.92px }

.pace .pace-progress[data-progress-text="29%"]:after { right: -146.06px }

.pace .pace-progress[data-progress-text="30%"]:after { right: -144.2px }

.pace .pace-progress[data-progress-text="31%"]:after { right: -142.34px }

.pace .pace-progress[data-progress-text="32%"]:after { right: -140.48px }

.pace .pace-progress[data-progress-text="33%"]:after { right: -138.62px }

.pace .pace-progress[data-progress-text="34%"]:after { right: -136.76px }

.pace .pace-progress[data-progress-text="35%"]:after { right: -134.9px }

.pace .pace-progress[data-progress-text="36%"]:after { right: -133.04px }

.pace .pace-progress[data-progress-text="37%"]:after { right: -131.18px }

.pace .pace-progress[data-progress-text="38%"]:after { right: -129.32px }

.pace .pace-progress[data-progress-text="39%"]:after { right: -127.46px }

.pace .pace-progress[data-progress-text="40%"]:after { right: -125.6px }

.pace .pace-progress[data-progress-text="41%"]:after { right: -123.74px }

.pace .pace-progress[data-progress-text="42%"]:after { right: -121.88px }

.pace .pace-progress[data-progress-text="43%"]:after { right: -120.02px }

.pace .pace-progress[data-progress-text="44%"]:after { right: -118.16px }

.pace .pace-progress[data-progress-text="45%"]:after { right: -116.3px }

.pace .pace-progress[data-progress-text="46%"]:after { right: -114.44px }

.pace .pace-progress[data-progress-text="47%"]:after { right: -112.58px }

.pace .pace-progress[data-progress-text="48%"]:after { right: -110.72px }

.pace .pace-progress[data-progress-text="49%"]:after { right: -108.86px }

.pace .pace-progress[data-progress-text="50%"]:after { right: -107px }

.pace .pace-progress[data-progress-text="51%"]:after { right: -105.14px }

.pace .pace-progress[data-progress-text="52%"]:after { right: -103.28px }

.pace .pace-progress[data-progress-text="53%"]:after { right: -101.42px }

.pace .pace-progress[data-progress-text="54%"]:after { right: -99.56px }

.pace .pace-progress[data-progress-text="55%"]:after { right: -97.7px }

.pace .pace-progress[data-progress-text="56%"]:after { right: -95.84px }

.pace .pace-progress[data-progress-text="57%"]:after { right: -93.98px }

.pace .pace-progress[data-progress-text="58%"]:after { right: -92.12px }

.pace .pace-progress[data-progress-text="59%"]:after { right: -90.26px }

.pace .pace-progress[data-progress-text="60%"]:after { right: -88.4px }

.pace .pace-progress[data-progress-text="61%"]:after { right: -86.53999999999999px }

.pace .pace-progress[data-progress-text="62%"]:after { right: -84.68px }

.pace .pace-progress[data-progress-text="63%"]:after { right: -82.82px }

.pace .pace-progress[data-progress-text="64%"]:after { right: -80.96000000000001px }

.pace .pace-progress[data-progress-text="65%"]:after { right: -79.1px }

.pace .pace-progress[data-progress-text="66%"]:after { right: -77.24px }

.pace .pace-progress[data-progress-text="67%"]:after { right: -75.38px }

.pace .pace-progress[data-progress-text="68%"]:after { right: -73.52px }

.pace .pace-progress[data-progress-text="69%"]:after { right: -71.66px }

.pace .pace-progress[data-progress-text="70%"]:after { right: -69.8px }

.pace .pace-progress[data-progress-text="71%"]:after { right: -67.94px }

.pace .pace-progress[data-progress-text="72%"]:after { right: -66.08px }

.pace .pace-progress[data-progress-text="73%"]:after { right: -64.22px }

.pace .pace-progress[data-progress-text="74%"]:after { right: -62.36px }

.pace .pace-progress[data-progress-text="75%"]:after { right: -60.5px }

.pace .pace-progress[data-progress-text="76%"]:after { right: -58.64px }

.pace .pace-progress[data-progress-text="77%"]:after { right: -56.78px }

.pace .pace-progress[data-progress-text="78%"]:after { right: -54.92px }

.pace .pace-progress[data-progress-text="79%"]:after { right: -53.06px }

.pace .pace-progress[data-progress-text="80%"]:after { right: -51.2px }

.pace .pace-progress[data-progress-text="81%"]:after { right: -49.34px }

.pace .pace-progress[data-progress-text="82%"]:after { right: -47.480000000000004px }

.pace .pace-progress[data-progress-text="83%"]:after { right: -45.62px }

.pace .pace-progress[data-progress-text="84%"]:after { right: -43.76px }

.pace .pace-progress[data-progress-text="85%"]:after { right: -41.9px }

.pace .pace-progress[data-progress-text="86%"]:after { right: -40.04px }

.pace .pace-progress[data-progress-text="87%"]:after { right: -38.18px }

.pace .pace-progress[data-progress-text="88%"]:after { right: -36.32px }

.pace .pace-progress[data-progress-text="89%"]:after { right: -34.46px }

.pace .pace-progress[data-progress-text="90%"]:after { right: -32.6px }

.pace .pace-progress[data-progress-text="91%"]:after { right: -30.740000000000002px }

.pace .pace-progress[data-progress-text="92%"]:after { right: -28.880000000000003px }

.pace .pace-progress[data-progress-text="93%"]:after { right: -27.02px }

.pace .pace-progress[data-progress-text="94%"]:after { right: -25.16px }

.pace .pace-progress[data-progress-text="95%"]:after { right: -23.3px }

.pace .pace-progress[data-progress-text="96%"]:after { right: -21.439999999999998px }

.pace .pace-progress[data-progress-text="97%"]:after { right: -19.58px }

.pace .pace-progress[data-progress-text="98%"]:after { right: -17.72px }

.pace .pace-progress[data-progress-text="99%"]:after { right: -15.86px }

.pace .pace-progress[data-progress-text="100%"]:after { right: -14px }

.pace .pace-activity {

position: absolute;

width: 100%;

height: 28px;

z-index: 2001;

box-shadow: inset 0 0 0 2px #29d, inset 0 0 0 7px #FFF;

border-radius: 10px;

}

.pace.pace-inactive {

display: none;

}

See the Pen js-pace loading-progress 百分比戴入畫面 by Jimmy_Wu (@Jimmy_Wu) on CodePen.

js bin展示開新視窗

因為使用外連的 iframe 指定 ajax 監視的對象，原範例可以指定 class 的名稱如 selectors: ['.my-page']，但因為對像是外連的 iframe 因此指定 html 為對象，確定都戴入與百分比。

資料源：
pace官網說明
 pace官網展示頁面
 Pace.js——一个优秀的网页加载进度条插件
 pace.js和NProgress.js两个加载进度插件的一点小总结
 pace.js – 网页自动加载进度条插件
 pace.js – 加载进度条插件

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