jquery 步骤进度轴插件的实现代码

每天一个jquery插件-步骤进度轴步骤进度轴

很多工具型的网站入门教程或者注册账号走流程的时候会有这个结构存在，所以做了一个来尝试一下，回调动作也能用吧

效果如下

在这里插入图片描述

代码部分

*{
 margin: 0;
 padding: 0;
}
#div{
 width: 90%;
 height: 50px;
 margin: 10px auto;
 display: flex;
 justify-content: center;
 align-items: center;
}
#box{
 width: 90%;
 height: 100px;
 border: 1px solid lightgray;
 margin: 10px auto;
 display: flex;
 justify-content: center;
 align-items: center;
 position: relative;
}
.box{
 position: absolute;
 width: 100%;
 height: 100%;
 top: 0;
 left: 0;
 display: flex;
 justify-content: center;
 align-items: center;
 background-color: black;
 color: white;
}
.tbar{
 width: 90%;
 height: 6px;
 border-radius: 5px;
 background-color: lightgray;
 display: flex;
 align-items: center;
 position: absolute;
}
.bar{
 width: 100%;
 height: 50%;
 border-radius: 5px;
 background-color: #1abc9c;
 transition: all 0.2s linear;
}
.dot{
 position: absolute;
 width: 12px;
 height: 12px;
 border-radius: 50%;
 background-color: lightgray;
 cursor: pointer;
 display: flex;
 justify-content: center;
 align-items: center;
}
.dot:hover{
 transition: all 0.5s linear;
 background-color: #1abc9c;
}
.dot.check{
 background-color: #1abc9c;
}
.dot .txt{
 top: 100%;
 font-size: 12px;
 position: absolute;
 width: 100px;
 text-align: center;
}

<!DOCTYPE html>
<html>
 <head>
  <meta charset="utf-8">
  <title>步骤进度轴</title>
  <script src="js/jquery-3.4.1.min.js"></script>
  <script src="js/bzjdz.js"></script>
  <link href="css/bzjdz.css" rel="external nofollow"  rel="stylesheet" type="text/css" />
 </head>
 <body>
  <div id="div">
   
  </div>
  <div id="box">
   <div class="box" id="box1" style="background-color: #1abc9c;">步骤1</div>
   <div class="box" id="box2" style="background-color: #3498db;">步骤2</div>
   <div class="box" id="box3" style="background-color: #f1c40f;">步骤3</div>
   <div class="box" id="box4" style="background-color: #e74c3c;">步骤4</div>
   <div class="box" id="box5" style="background-color: #9b59b6;">步骤5</div>
  </div>
 </body>
</html>
<script>
 $(function(){
  $("#div").timeline({
   data:[
    {name:'步骤1',id:'#box1',click:hide},
    {name:'步骤2',id:'#box2',click:hide},
    {name:'步骤3',id:'#box3',click:hide},
    {name:'步骤4',id:'#box4',click:hide},
    {name:'步骤5',id:'#box4',click:hide},
   ]
  })
 })
 function hide(item){
  $(".box").hide();
  $(item.id).show();
 }
</script>

$.prototype.timeline =function(op){
 console.log(op.data);
 var $that = $(this);
 var $tbar =$("<div class='tbar'></div>");
 var $bar  =$("<div class='bar'></div>");
 $bar.appendTo($tbar)
 $tbar.appendTo($that);
 var length = op.data.length;//元素长度
 var index = 0;//当前进行到哪个步骤
 op.data.forEach((item,index)=>{
  var per = getper(index,length)
  var $dot  = $("<div class='dot' data-index='"+index+"'><div class='txt'>"+item.name+"</div></div>");
  $dot.appendTo($tbar);
  $dot.css('left',"calc("+per+"% - 6px)")
 })
 //点击事件
 $that.find('.dot').click(function(){
  index = parseInt($(this).attr('data-index'));
  //执行对应的方法
  click();
 })
 click();
 function click(){
  //回调
  var item = op.data[index];
  item.click(item);
  //动画样式
  var per = getper(index,length)
  $bar.css('width',per+'%')
  //按钮选中的控制
  op.data.forEach((item,i)=>{
   if(i<=index){
    $tbar.find(".dot[data-index='"+i+"']").addClass('check');
   }else{
    $tbar.find(".dot[data-index='"+i+"']").removeClass('check');
   }
  })
 }
 function getper(i,l){
  var temp = 0;
  if(i!=0&&i!=l-1){
   temp = i/(l-1)*100//算出大概的距离
  }else if(i==l-1){
   temp = 100
  }
  return temp;
 }
}

思路解释

要做的内容很简单，画出时间轴，标记对应的点，然后在触发对应事件的时候正确调用回调
时间轴画的时候就那样，百分比一填满就没啥了，然后里面把会变化进度的和校园点分开绘制
小圆点点击的时候改变当前结构标记，然后触发一个事件，把动画效果和回调一并执行、
完事，休息

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