首页 \ 问答 \ Parallax Scrolling SpriteKit(Parallax Scrolling SpriteKit)

Parallax Scrolling SpriteKit(Parallax Scrolling SpriteKit)

 我已经找到了一个关于使用objective-C的spritekit中的视差滚动的教程，虽然我一直试图将它移植到swift而没有太大的成功，实际上很少。  
 视差滚动  
 有没有人有任何其他教程或方法在swift中进行视差滚动。 

I have found a tutorial on parallax scrolling in spritekit using objective-C though I have been trying to port it to swift without much success, very little in fact. 
Parallax Scrolling 
Does anyone have any other tutorials or methods of doing parallax scrolling in swift.

原文：https://stackoverflow.com/questions/25699411

更新时间：2023-10-19 20:10

最满意答案

 您的代码的问题是，当您搜索.table-expandable-arrow - 您的DOM中仍然没有这样的元素（此元素仅在此调用之后创建）。  
 相反 - 您可以更改代码以确保在创建元素期间将click事件附加到arrow 。  
 这是一个例子：  
 
 
  
  (function ($) {
    $(function () {
        $('.table-expandable').each(function () {
            var table = $(this);
            table.children('thead').children('tr').append('<th></th>');
            table.children('tbody').children('tr').filter(':odd').hide();
            table.children('tbody').children('tr').filter(':even').each(function () {
                var element = $(this);
                arrowElement = $('<div class="table-expandable-arrow"></div>')
                arrowElement.on('click', function () {
                  $(this).parents('tr').next('tr').toggle('slow');
                  $(this).toggleClass("up");
                });
                td = $('<td></td>').append(arrowElement)
                element.append(td);
            });
        });
    });
})(jQuery);  
  table.table-expandable > tbody > tr:nth-child(odd) {
  cursor: auto !important;
}
.table-expandable-arrow {
  cursor: pointer;
} 
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<script src="http://code.jquery.com/jquery-2.1.4.min.js" type="text/javascript"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<link href="http://www.jqueryscript.net/css/jquerysctipttop.css" rel="stylesheet" type="text/css">
<link rel="stylesheet" href="http://www.jqueryscript.net/demo/jQuery-Plugin-For-Expandable-Bootstrap-Table-Rows/css/bootstrap-table-expandable.css">
<div class="container">
  <h1 style="margin-top:150px;">jQuery Bootstrap Table Expandable Demo</h1>
  <table class="table table-hover table-expandable table-striped">
    <thead>
      <tr>
        <th>Country</th>
        <th>Population</th>
        <th>Area</th>
        <th>Official languages</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>United States of America</td>
        <td>306,939,000</td>
        <td>9,826,630 km2</td>
        <td>English</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/Usa">USA on Wikipedia</a></li>
            <li><a href="http://nationalatlas.gov/">National Atlas of the United States</a></li>
            <li><a href="http://www.nationalcenter.org/HistoricalDocuments.html">Historical Documents</a></li>
          </ul></td>
      </tr>
      <tr>
        <td>United Kingdom </td>
        <td>61,612,300</td>
        <td>244,820 km2</td>
        <td>English</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/United_kingdom">UK on Wikipedia</a></li>
            <li><a href="http://www.visitbritain.com/">Official tourist guide to Britain</a></li>
            <li><a href="http://www.statistics.gov.uk/StatBase/Product.asp?vlnk=5703">Official Yearbook of the United Kingdom</a></li>
          </ul></td>
      </tr>
      <tr>
        <td>India</td>
        <td>1,147,995,904</td>
        <td>3,287,240 km2</td>
        <td>Hindi, English</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/India">India on Wikipedia</a></li>
            <li><a href="http://india.gov.in/">Government of India</a></li>
            <li><a href="http://wikitravel.org/en/India">India travel guide</a></li>
          </ul></td>
      </tr>
      <tr>
        <td>Canada</td>
        <td>33,718,000</td>
        <td>9,984,670 km2</td>
        <td>English, French</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/Canada">Canada on Wikipedia</a></li>
            <li><a href="http://atlas.gc.ca/site/index.html" >Official 
              Government of Canada online Atlas of Canada</a></li>
            <li><a href="http://wikitravel.org/en/Canada">Canada travel guide</a></li>
          </ul></td>
      </tr>
      <tr>
        <td>Germany</td>
        <td>82,060,000</td>
        <td>357,021 km2</td>
        <td>German</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/Germany">Germany on Wikipedia</a></li>
            <li><a href="http://www.deutschland.de/home.php?lang=2">Deutschland.de Official Germany portal</a></li>
            <li><a href="http://www.cometogermany.com/">Germany Travel Info</a></li>
          </ul></td>
      </tr>
    </tbody>
  </table> 
  
 
 
 
  请注意，我还添加了一些css更改，以确保在悬停整个行时光标未设置为pointer ，但仅限于箭头。  

The problem with your code is that by that time that you search for .table-expandable-arrow - there is still no such element in your DOM (this element is created only in the after the this call). 
Instead - you can change your code to make sure to attach the click event to the arrow during the creation of the element. 
Here is an example: 
 
 
  
  (function ($) {
    $(function () {
        $('.table-expandable').each(function () {
            var table = $(this);
            table.children('thead').children('tr').append('<th></th>');
            table.children('tbody').children('tr').filter(':odd').hide();
            table.children('tbody').children('tr').filter(':even').each(function () {
                var element = $(this);
                arrowElement = $('<div class="table-expandable-arrow"></div>')
                arrowElement.on('click', function () {
                  $(this).parents('tr').next('tr').toggle('slow');
                  $(this).toggleClass("up");
                });
                td = $('<td></td>').append(arrowElement)
                element.append(td);
            });
        });
    });
})(jQuery);  
  table.table-expandable > tbody > tr:nth-child(odd) {
  cursor: auto !important;
}
.table-expandable-arrow {
  cursor: pointer;
} 
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<script src="http://code.jquery.com/jquery-2.1.4.min.js" type="text/javascript"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<link href="http://www.jqueryscript.net/css/jquerysctipttop.css" rel="stylesheet" type="text/css">
<link rel="stylesheet" href="http://www.jqueryscript.net/demo/jQuery-Plugin-For-Expandable-Bootstrap-Table-Rows/css/bootstrap-table-expandable.css">
<div class="container">
  <h1 style="margin-top:150px;">jQuery Bootstrap Table Expandable Demo</h1>
  <table class="table table-hover table-expandable table-striped">
    <thead>
      <tr>
        <th>Country</th>
        <th>Population</th>
        <th>Area</th>
        <th>Official languages</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>United States of America</td>
        <td>306,939,000</td>
        <td>9,826,630 km2</td>
        <td>English</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/Usa">USA on Wikipedia</a></li>
            <li><a href="http://nationalatlas.gov/">National Atlas of the United States</a></li>
            <li><a href="http://www.nationalcenter.org/HistoricalDocuments.html">Historical Documents</a></li>
          </ul></td>
      </tr>
      <tr>
        <td>United Kingdom </td>
        <td>61,612,300</td>
        <td>244,820 km2</td>
        <td>English</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/United_kingdom">UK on Wikipedia</a></li>
            <li><a href="http://www.visitbritain.com/">Official tourist guide to Britain</a></li>
            <li><a href="http://www.statistics.gov.uk/StatBase/Product.asp?vlnk=5703">Official Yearbook of the United Kingdom</a></li>
          </ul></td>
      </tr>
      <tr>
        <td>India</td>
        <td>1,147,995,904</td>
        <td>3,287,240 km2</td>
        <td>Hindi, English</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/India">India on Wikipedia</a></li>
            <li><a href="http://india.gov.in/">Government of India</a></li>
            <li><a href="http://wikitravel.org/en/India">India travel guide</a></li>
          </ul></td>
      </tr>
      <tr>
        <td>Canada</td>
        <td>33,718,000</td>
        <td>9,984,670 km2</td>
        <td>English, French</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/Canada">Canada on Wikipedia</a></li>
            <li><a href="http://atlas.gc.ca/site/index.html" >Official 
              Government of Canada online Atlas of Canada</a></li>
            <li><a href="http://wikitravel.org/en/Canada">Canada travel guide</a></li>
          </ul></td>
      </tr>
      <tr>
        <td>Germany</td>
        <td>82,060,000</td>
        <td>357,021 km2</td>
        <td>German</td>
      </tr>
      <tr>
        <td colspan="5"><h4>Additional information</h4>
          <ul>
            <li><a href="http://en.wikipedia.org/wiki/Germany">Germany on Wikipedia</a></li>
            <li><a href="http://www.deutschland.de/home.php?lang=2">Deutschland.de Official Germany portal</a></li>
            <li><a href="http://www.cometogermany.com/">Germany Travel Info</a></li>
          </ul></td>
      </tr>
    </tbody>
  </table> 
  
 
 
 
 Note that I also added some css changes to make sure the cursor is not set to pointer when you hover the entire row, but only on the arrow.

Parallax Scrolling SpriteKit(Parallax Scrolling SpriteKit)

最满意答案

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