JS实现分页浏览横向图片(类轮播)实例代码

昨天朋友问我怎么用js实现分页浏览横向图片功能，其实实现代码很简单的，下面小编给大家带来了具体实现代码，代码如下所示：

common.js

function $(id) {
 return document.getElementById(id);
}
function $_tag(tag) {
 return document.getElementsByTagName(tag);
} 

index.html

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>Document</title>
 <style>
  a {
   cursor: pointer;
  }
  .div1 {
   width: 410px; /* 可以去掉 */
   height: 100px;
   overflow-x: hidden;
   white-space: nowrap;
  }
  .div2 {
   display: none;
  }
 </style>
</head>
<body>
 <div class="div1" id="div1">
 </div>
 <a onclick="pre()">上一页</a>
 <a onclick="next()">下一页</a>
 <div class="div2">
  <img src="images/1.jpg" alt="">
  <img src="images/2.jpg" alt="">
  <img src="images/3.jpg" alt="">
  <img src="images/4.jpg" alt="">
  <img src="images/5.jpg" alt="">
  <img src="images/6.jpg" alt="">
  <img src="images/7.jpg" alt="">
 </div>
 <script src="js/common.js"></script>
 <script>
  //搞一个拼img标签的函数 传参数 for循环
  //扩展、稳定、兼容、好用(简单)...
  //<img src="images/7.jpg" alt="">
  var count = 4; // 每页的图片数目
  var currentpage = 1; //当前页数
  var imgs = $_tag("img");
  //console.log(imgs); 可以深入了解下
  console.log("图片总数：" + imgs.length);
  var totalpage = Math.ceil(imgs.length/count);
  console.log("总页数：" + totalpage);
  function pre() {
   if(currentpage == 1){
    console.log("已经是第一页了!");
    return;
   }else if(currentpage > 1){
    var tmp = (currentpage - 2) * count + 1;
    var str = "";
    str += "<img src='" + "images/" + tmp + ".jpg'>";
    str += "<img src='" + "images/" + (tmp+1) + ".jpg'>";
    str += "<img src='" + "images/" + (tmp+2) + ".jpg'>";
    str += "<img src='" + "images/" + (tmp+3) + ".jpg'>";
    currentpage -= 1;
    console.log(str);
    $("div1").innerHTML = str;
   }
  }
  function next() {
   if(currentpage == totalpage){
    console.log("已经是最后一页了!");
   }else if(currentpage == (totalpage - 1)){
    var sur = imgs.length % count;
    var tmp1 = currentpage * count + 1;
    var str = "";
    console.log("剩余数:" + sur);
    for(var i=0;i<sur;i++){
     console.log("第几张：" + (tmp1+i));
     str += "<img src=\"" + "images/" + (tmp1+i) + ".jpg\">";
    }
    currentpage += 1;
    console.log(str);
    $("div1").innerHTML = str;
   }else if(currentpage > 0){
    var tmp = currentpage * count + 1;
    console.log("tmp:" + tmp);
    var str = "";
    str += "<img src='" + "images/" + tmp + ".jpg'>";
    str += "<img src='" + "images/" + (tmp+1) + ".jpg'>";
    str += "<img src='" + "images/" + (tmp+2) + ".jpg'>";
    str += "<img src='" + "images/" + (tmp+3) + ".jpg'>";
    currentpage += 1;
    $("div1").innerHTML = str;
   }
  }
  function firstpage() {
   var str = "";
   str += "<img src='" + "images/" + 1 + ".jpg'>";
   str += "<img src='" + "images/" + 2 + ".jpg'>";
   str += "<img src='" + "images/" + 3 + ".jpg'>";
   str += "<img src='" + "images/" + 4 + ".jpg'>";
   console.log(str);
   $("div1").innerHTML = str;
  }
  window.onload = function() {
   firstpage();
  }
 </script>
</body>
</html> 

总结

以上所述是小编给大家介绍的JS实现分页浏览横向图片(类轮播)实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对我们网站的支持！