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Detailed explanation of examples of imitating Baidu query drop-down content using PHP and Ajax

黄舟Original: 2017-10-21 09:41:591331browse

Detailed example of using php and ajax to imitate Baidu query drop-down content

The running effect is as follows:

html code:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
  <style type="text/css">
    body{
      margin:0;
      padding: 0;
    }
    form{
      width: 500px;
      margin:40px auto;
    }
    .search-wrap{
      position: relative;
    }
    li{
      padding: 0;
      padding-left: 10px;
      list-style: none;
    }
    li:hover{
      background-color: #ccc;
      color: #fff;
      cursor: pointer;
    }
    #xiala{
      position: absolute;
      top: 40px;
      left: 0;
      background-color: #c2c2c2;
      width: 200px;
      margin:0;
      padding: 0 ;
      display: none;
    }
  </style>
</head>
<body>
  <form action="">
    <p class="search-wrap">
      <input type="text" id="search">
      <ul id="xiala">
      </ul>
      <input type="button" value="go" id="sousuo">
      <p id="searVal" style="display:inline-block;border:1px solid #ccc"></p>
    </p>
  </form>
</body>
<script type="text/javascript">
  var search=$("#search");
  search.on("input",function(){  //输入框内容改变发请求
    $.ajax({
      url:&#39;a.txt&#39;,
      type:&#39;GET&#39;,
      async:true,
      data:{value:$("#search").val()},
      success:function(data){
        var arr=data.split(&#39;,&#39;);
        console.log(arr);
        $("#xiala").html("");
        $.each(arr,function(i,n){
          var oLi=$("<li>"+arr[i]+"</li>");
          $("#xiala").append(oLi);
          $("#xiala").css("display","block");
        })
      }
    });
    $("#xiala").css("display","block");       //内容改变下拉框显示
    $("#searVal").html(search.val())
  })
  function stopPropagation(e) {
    if (e.stopPropagation){
       e.stopPropagation();
    }else{
     e.cancelBubble = true;
    }
  }
  $(document).on(&#39;click&#39;,function(){     //点击页面的时候下拉框隐藏
    $("#xiala").css("display","none");
  });
  $(document).on("click","#xiala li",function(){ //点击下拉框选项的时候改变输入框的值
    search.val($(this).text());
    $("#searVal").html($(this).text());
    $("#xiala").css("display","none");
  })
</script>
</html>

a.txt content:

a,b,c,d,e,f,g

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Detailed explanation of examples of imitating Baidu query drop-down content using PHP and Ajax

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