搜索框键盘抬起事件1

一.
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <link rel="stylesheet" href="Web/css/bootstrap.min.css">
  <script src="Web/js/jquery-1.8.3.min.js"></script>
</head>
<style>
  .search {
    display: inline-flex;
    height: 35px;
    margin: 50px auto;
    position: relative;
  }
  .search input {
    border: #eee 1px solid;
    background-color: #fff;
    outline: none;
     200px;
    padding: 0 5px;
  }
  .search button {
    background-color: #ff3300;
    color: #fff;
    border: none;
     80px;
  }
  /*追加到.search的内容后面.然后设置CSS代码, 我们设置他的最小宽度为.search宽度减去搜索按钮的宽度.这样就跟搜索框一样宽.*/
  .search ul {
    list-style-type:none;
    position: absolute;
    left: 0;
    top: 35px;
    border: #eee 1px solid;
    min- calc(100% - 80px);
    text-align: left;
  }
  .search ul a {
    display: block;
    padding: 5px;
  }
</style>
<body style="text-align: center;">

  <div class="search">
    <!--1.搜索框,搜索的点击按钮.-->
    <input id="key" type="text" value="" placeholder="请输入需要搜索内容">
    <button>搜索</button>

    <!--2.下面词语列表-->
    <ul id="datalist">
      <li><a href="#">武林外传</a> </li>
      <li><a href="#">葵花宝典</a> </li>
      <li><a href="#">如来佛掌</a> </li>
      <li><a href="#">九阴白骨爪</a> </li>
    </ul>
  </div>
</body>
<script>

  //模拟数据
  var data = ["编程的人", "武林外传", "葵花宝典", "九阴白骨爪", "武林江湖", "will"];

  var ele_key = document.getElementById("key");
  ele_key.onkeyup = function (e) {
    //处理事件
    var val = this.value;
    //获取输入框里匹配的数据
    var srdata = [];
    for (var i = 0; i < data.length; i++) {

      if (val.trim().length > 0 && data[i].indexOf(val) > -1) {
        srdata.push(data[i]);
      }
    }
    //获取到的数据准备追加显示, 前期要做的事情: 清空数据,然后显示数据列表,如果获取到的数据为空,则不显示
    var ele_datalist = document.getElementById("datalist");
    ele_datalist.style.visibility = "visible";
    ele_datalist.innerHTML = "";

    if (srdata.length == 0) {
      ele_datalist.style.visibility = "hidden";
    }

    //将搜索到的数据追加到显示数据列表, 然后每一行加入点击事件, 点击后将数据放入搜索框内, 数据列表隐藏
    var self = this;
    for (var i = 0; i < srdata.length; i++) {
      var ele_li = document.createElement("li");
      var ele_a = document.createElement("a");
      ele_a.setAttribute("href", "javascript:;");
      ele_a.textContent = srdata[i];

      ele_a.onclick = function () {
        self.value = this.textContent;
        ele_datalist.style.visibility = "hidden";
      }


      ele_li.appendChild(ele_a);
      ele_datalist.appendChild(ele_li);
    }

  }

</script>














</html>