Of Stack

JS simulation realizes JD.COM express order number inquiry

  • 2021-09-24 21:27:09
  • OfStack

In this paper, we share the specific code of JS to realize JD.COM express number query for your reference. The specific contents are as follows 


<!DOCTYPE html>
<html lang="en">

<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 <title>Document</title>
 <style>
  * {
   margin: 0;
   padding: 0;
  }
  
  .search {
   position: relative;
   width: 178px;
   margin: 100px;
  }
  
  .con {
   display: none;
   position: absolute;
   top: -40px;
   width: 171px;
   border: 1px solid rgba(0, 0, 0, .2);
   box-shadow: 0 2px 4px rgba(0, 0, 0, .2);
   padding: 5px 0;
   font-size: 18px;
   line-height: 20px;
   color: #333;
  }
  
  .con::before {
   content: '';
   width: 0;
   height: 0;
   position: absolute;
   top: 28px;
   left: 18px;
   border: 8px solid #000;
   border-style: solid dashed dashed;
   border-color: #fff transparent transparent;
  }
 </style>
</head>

<body>
 <div class="search">
  <div class="con">123</div>
  <input type="text" placeholder=" Please enter your courier number " class="jd">
 </div>
 <script>
  //  When the express delivery number is entered,   The large font box above ( con ) Display ( The font size here is bigger.) 
  //  The form detects user input:   Add a keyboard event to a form 
  //  At the same time, put the value in the courier number ( value ) Get it and assign it to  con Box ( innerText ) as content 
  //  If the contents of the express order number are empty, hide the large font box (con) Box 
  var con = document.querySelector('.con');
  var jd_input = document.querySelector('.jd');
  jd_input.addEventListener('keyup', function() {
    // console.log(' Enter the content ');
    if (this.value == '') {
     con.style.display = 'none';
    } else {
     con.style.display = 'block';
     con.innerText = this.value;
    }
   })
   //  When we lose focus, we hide this con Box 
  jd_input.addEventListener('blur', function() {
    con.style.display = 'none';
   })
   //  When we get the focus, it shows this con Box 
  jd_input.addEventListener('focus', function() {
   if (this.value !== '') {
    con.style.display = 'block';
   }
  })
 </script>
</body>

This site will share another JS code for you: 


<script>
 var inp = document.querySelector('.inp')
 var son = document.querySelector('.son')
 inp.addEventListener('keyup', function () {
  if (this.value === '') {
   son.style.visibility = 'hidden'
  } else {
   son.style.visibility = 'visible'
   son.innerHTML = this.value
  }
 })
 inp.addEventListener('blur', function () {
  son.style.visibility = 'hidden'
 })
 inp.addEventListener('focus', function () {
  if (this.value !== '') {
   son.style.visibility = 'visible'
  }
 })

</script>
Related articles: