JS, HTML, CSS to achieve carousel effect

In front-end development, no one can achieve very good development without the three languages ​​​​of JS, HTML, and CSS. This article mainly introduces the carousel effect of JS+HTML+CSS to everyone in detail, which has certain reference value. Interested friends can refer to it.

1.lunbo.html code:

 
 
 
   
   
   
   

 
 
 
 
  
 
     
     
     
     
    
 
  
 
     
     
     
  
 
  < 
  >
 
 
 

2.CSS/lunbo.css code:

body { 
  margin: 0px; 
  padding: 0px; 
  width: 1350px; 
  height: 618px; 
} 
 
a { 
  text-decoration: none; 
} 
 
#container { 
  width: 1350px; 
  height: 618px; 
  overflow: hidden; 
  position: relative; 
  border-top: 1px solid #ac6a0a; 
} 
 
#list { 
  width: 6750px; 
  height: 618px; 
  position: absolute; 
  z-index: 1; 
} 
 
#list img { 
  float: left; 
  width: 1350px; 
  height: 618px; 
} 
 
#buttons { 
  position: absolute; 
  height: 20px; 
  width: 60px; 
  z-index: 2; 
  bottom: 20px; 
  left: 50%; 
} 
 
#buttons span { 
  cursor: pointer; 
  float: left; 
  border: 1px solid #ad6a0a; 
  width: 10px; 
  height: 10px; 
  -webkit-border-radius: 50%; 
  -moz-border-radius: 50%; 
  border-radius: 50%; 
  margin-right: 5px; 
} 
 
#buttons .on { 
  background: orangered; 
} 
 
.arrow { 
  cursor: pointer; 
  display: none; 
  line-height: 100px; 
  text-align: center; 
  width: 40px; 
  height: 40px; 
  position: absolute; 
  z-index: 2; 
  top: 180px; 
  background-color: RGBA(0, 0, 0, 0); 
  color: #fff; 
} 
 
.arrow:hover { 
  background-color: RGBA(0, 0, 0, 0); 
} 
 
#container:hover .arrow { 
  display: block; 
} 
 
#prev { 
  left: 10px; 
  color: #ffffff; 
} 
 
#next { 
  right: 10px; 
  color: #ffffff; 
}

window.onload = function () { 
  var container = document.getElementById('container'); 
  var list = document.getElementById('list'); 
  var buttons = document.getElementById('buttons').getElementsByTagName('span'); 
  var prev = document.getElementById('prev'); 
  var next = document.getElementById('next'); 
  var index = 1; 
  var len = 3; 
  var animated = false; 
  var interval = 3000; 
  var timer; 
  var size = 1350; 
 
  function animate(offset) { 
    if (offset == 0) { 
      return; 
    } 
    animated = true; 
    var time = 300; 
    var inteval = 10; 
    var speed = offset / (time / inteval); 
    console.log("speed:" + speed); 
    var left = parseInt(list.style.left) + offset; 
 
    var go = function () { 
      if ((speed > 0 && parseInt(list.style.left) < left) || (speed < 0 && parseInt(list.style.left) > left)) { 
        list.style.left = parseInt(list.style.left) + speed + 'px'; 
        console.log(list.style.left); 
        setTimeout(go, inteval); 
      } else { 
        list.style.left = left + 'px'; 
        if (left > -200) { 
          list.style.left = -size * len + 'px'; 
        } 
        if (left < ( -size * len)) { 
          list.style.left = '-' + size + 'px'; 
        } 
        animated = false; 
        console.log("left:" + list.style.left); 
      } 
    } 
    go(); 
  } 
 
  function showButton() { 
    for (var i = 0; i < buttons.length; i++) { 
      if (buttons[i].className == 'on') { 
        buttons[i].className = ''; 
        break; 
      } 
    } 
    buttons[index - 1].className = 'on'; 
  } 
 
  function play() { 
    timer = setTimeout(function () { 
        next.onclick(); 
        play(); 
      }, 
      interval); 
  } 
 
  function stop() { 
    clearTimeout(timer); 
  } 
 
  next.onclick = function () { 
    if (animated) { 
      return; 
    } 
    if (index == len) { 
      index = 1; 
    } else { 
      index += 1; 
    } 
    animate(-size); 
    showButton(); 
  } 
  prev.onclick = function () { 
    if (animated) { 
      return; 
    } 
    if (index == 1) { 
      index = len; 
    } else { 
      index -= 1; 
    } 
    animate(size); 
    showButton(); 
  } 
  for (var i = 0; i < buttons.length; i++) { 
    buttons[i].onclick = function () { 
      if (animated) { 
        return; 
      } 
      if (this.className == 'on') { 
        return; 
      } 
      var myIndex = parseInt(this.getAttribute('index')); 
      var offset = -size * (myIndex - index); 
 
      animate(offset); 
      index = myIndex; 
      showButton(); 
    } 
  } 
  container.onmouseover = stop; 
  container.onmouseout = play; 
  play(); 
};

Summary of mobile video playback problems

Achieve compatibility Music playback js code for various browsers

How to write a web music player using html5

The above is the detailed content of JS, HTML, CSS to achieve carousel effect. For more information, please follow other related articles on the PHP Chinese website!