基于jQuery点击加载动画按钮特效

<div class="container">
       <div class="row">
           <div class="col-md-6 col-md-offset-3 text-center">
               <p>
                   <button class="btn btn-primary ladda-button" data-style="expand-left"><span class="ladda-label">expand-left</span></button>
                   <button class="btn btn-primary ladda-button" data-style="expand-right"><span class="ladda-label">expand-right</span></button>
                   <button class="btn btn-primary ladda-button" data-style="expand-up"><span class="ladda-label">expand-up</span></button>
                   <button class="btn btn-primary ladda-button" data-style="expand-down"><span class="ladda-label">expand-down</span></button>
               </p>
           </div>
       </div>
       <div class="row">
           <div class="col-md-6 col-md-offset-3 text-center">
               <p>
                   <button class="btn btn-info ladda-button" data-style="zoom-in"><span class="ladda-label">zoom-in</span></button>
                   <button class="btn btn-info ladda-button" data-style="zoom-out"><span class="ladda-label">zoom-out</span></button>
               </p>
           </div>
       </div>
       <div class="row">
           <div class="col-md-6 col-md-offset-3 text-center">
               <p>
                   <button class="btn btn-warning ladda-button" data-style="slide-left"><span class="ladda-label">slide-left</span></button>
                   <button class="btn btn-warning ladda-button" data-style="slide-right"><span class="ladda-label">slide-right</span></button>
                   <button class="btn btn-warning ladda-button" data-style="slide-up"><span class="ladda-label">slide-up</span></button>
                   <button class="btn btn-warning ladda-button" data-style="slide-down"><span class="ladda-label">slide-down</span></button>
               </p>
               <p><button class="btn btn-warning ladda-button" data-style="contract"><span class="ladda-label">contract</span></button></p>
           </div>
       </div>
       <div class="row">
           <div class="col-md-6 col-md-offset-3 text-center progress-demo">
               <p>Built-in progress bar</p>
               <p>
                   <button class="btn btn-danger ladda-button" data-style="expand-right"><span class="ladda-label">expand-right</span></button>
                   <button class="btn btn-danger ladda-button" data-style="expand-left"><span class="ladda-label">expand-left</span></button>
 
                   <button class="btn btn-danger ladda-button" data-style="contract"><span class="ladda-label">contract</span></button>
               </p>
           </div>
       </div>
       <div class="row">
           <div class="col-md-6 col-md-offset-3 text-center">
               <p>Sizes</p>
               <p>
                   <button class="btn btn-primary btn-xs ladda-button" data-style="expand-right" data-size="xs"><span class="ladda-label">extra small</span></button>
                   <button class="btn btn-primary btn-sm ladda-button" data-style="expand-right" data-size="s"><span class="ladda-label">small</span></button>
 
                   <button class="btn btn-primary btn-lg ladda-button" data-style="expand-right" data-size="l"><span class="ladda-label">large</span></button>
               </p>
           </div>
       </div>
   </div>

// Bind normal buttons
      Ladda.bind(‘div:not(.progress-demo) button‘, { timeout: 2000 });
 
      // Bind progress buttons and simulate loading progress
      Ladda.bind(‘.progress-demo button‘, {
          callback: function (instance) {
              var progress = 0;
              var interval = setInterval(function () {
                  progress = Math.min(progress + Math.random() * 0.1, 1);
                  instance.setProgress(progress);
 
                  if (progress === 1) {
                      instance.stop();
                      clearInterval(interval);
                  }
              }, 200);
          }
      });