A simple way to achieve seamless scrolling of text in 10 lines of JS

This article mainly shares with you an article about 10 lines of native JS to achieve the effect of seamless text scrolling. It is very simple and has good reference value. I hope it will be helpful to everyone. I hope it can help everyone.

No more nonsense, just go to the code

<section class="pro_quota_tip"> 
 <p class="tip_box"> 
  <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >aaaaaaaaa</a> 
  <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >bbbbbbbbbbbbbb</a> 
  <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >ccccccccccc</a> 
  <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >ddddddddddddddd</a> 
  <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >aaaaaaaaaaaaaa</a> 
 </p> 
</section>

body,#app{
  margin: 0;
  padding: 0;
  font-family:Helvetica;
  background: #f0efef !important;
  width: 100%;
  overflow-x: hidden;
}
a{
 text-decoration: none;
}
.pro_quota_tip{
  background: #fff;
  font-size: 14px;
  overflow: hidden;
  width: 200px;
  height: 49px;
  margin:0 auto;
  margin-top:10%
}
.pro_quota_tip .tip_box{
  position: relative;
}
.pro_quota_tip .tip_box a{
  color: red;
  display: block;
  width: 100%;
  padding:15px 5px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

var tip_box_a_h = document.querySelectorAll('.tip_box a')[0].offsetHeight;
var i=0;
setInterval(()=>{
 let startScroll = setInterval(()=>{
  i++;
  document.querySelector('.tip_box').style.bottom = (tip_box_a_h/10)*i+'px';
  if(i%10==0)clearInterval(startScroll);
 },50)
 if(i>(10*(document.querySelectorAll('.tip_box a').length-2)))i = 0;
},2500)

Absolute 10 lines, simple and practical, no dependencies

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