为什么 Stellar.js 中的元素不动？

Question

I have 3 circles in the header that are suppose to fall at different rates when scrolled via stellar.js; unfortunatly, they dont even move. They all have position attributes(absolute); Moreover, I've applied the data-stellar-ratio to the approprate tags. Why won't stellar.js work? Even further, how does one test for jQuery to know if it's just not pilot error?

HTML

<div id="companyInfo" >
    <div class="circlefront" data-stellar-ratio="1.2"></div>
    <div class="circlemiddle" data-stellar-ratio="1.8"></div>
    <div class="circlerear" data-stellar-ratio="3"></div>
    <div class="infoWrapper">
      <h1>Towing, you can't do it without a truck, i have a truck</h1>
      <p>Id abunum ta inte publicae adhui senterem praties tantiena quitas vis, factum destus. Loca vehebus; et? Ti. Upionem, sil tala morbit ina, nique confendum tati et acepsen ihilin sula audactorips, fatur ia consign arisulos inatuis.</p>
    </div>
  </div>

CSS

section#company div#companyInfo {
  height: 24em;
  line-height: 3em;
  margin: 0 auto;
  color: #fff;
}
section#company div#companyInfo div.infoWrapper {
  width: 960px;
  margin: 5em auto;
  text-align: center;
}
section#company div#companyInfo div.infoWrapper h1 {
  font-size: 2em;
}
section#company div#companyInfo div.infoWrapper p {
  line-height: 1.2em;
  font-size: 1.125em;
}
section#company .circlefront {
  background: rgba(255, 255, 255, 0.7);
  width: 500px;
  height: 500px;
  -webkit-border-radius: 50%;
  -moz-border-radius: 50%;
  position: absolute;
  top: 300px;
  left: 400px;
}
section#company .circlemiddle {
  background: rgba(255, 255, 255, 0.5);
  width: 250px;
  height: 250px;
  -webkit-border-radius: 50%;
  -moz-border-radius: 50%;
  position: absolute;
  top: 100px;
  left: 200px;
}
section#company .circlerear {
  background: rgba(255, 255, 255, 0.3);
  width: 100px;
  height: 100px;
  -webkit-border-radius: 50%;
  -moz-border-radius: 50%;
  position: absolute;
  top: 350px;
  right: 100px;
}

jQuery

<script src="asset/js/libs/jquery.stellar.min.js"></script> 
<script type="text/javascript">

$(function(){
            $.stellar({
                horizontalScrolling: false,
                verticalOffset: 0,
            });
        });
</script>

resources stellar.js tutorial on using stellar.js

Answer 1

I just saved your website & played around your code. Everything looks fine to me but still there is some problem. So, I removed all your script tags and added jQuery & Stellar from Stellar demo and it works fine.

There is only one bug I found, but I don't know that is the reason for this behaviour. There is a extra comma after verticaloffset:0 .

$(function(){
    $.stellar({
        horizontalScrolling: false,
        verticalOffset: 0, /* Remove this comma at the end */
    });
});