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Example code sharing on how to switch the search engine's navigation web search box using JavaScript

黄舟Original: 2017-06-18 13:15:312845browse

This article mainly introduces the example code of the navigation web search box of javascript switching search engine. It is very good and has reference value. Friends who need it can refer to it

No more nonsense, just give it to Everyone has posted the code. The specific code is as follows:

<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8">
  <style>
    #search ul {
      list-style-type: none;
      display: block;
      width: 100px;
      height: 33px;
      margin: 0;
      padding: 0;
      border: 0px;
      float: left;
    }
    #search li {
      border: 0px;
      margin: 0px;
      padding: 0px;
    }
    #search .selected {
      display: block;
    }
    #search form {
      margin: 0px;
      padding: 0px;
    }
    #search input {
      height: 30px;
      width: 400px;
      margin: 0px;
    }
    #search .button {
      font-size: 17px;
      font-weight: 600;
      color: #002D96;
      height: 30px;
      width: 110px;
      margin-left: 50px;
      background: #e6efc2;
      opacity: 0.8;
      border: #7fb80e 1px solid;
      cursor: pointer;
      -webkit-border-radius: 2px;
      border-radius: 2px;
    }
  </style>
</head>
<body>
<p id="search" align="center">
  <table>
    <tr>
      <td>
        <ul>
          <li style="display:block;"><img width="80" src="https://www.baidu.com/img/bd_logo1.png"/></li>
          <li style="display:none;"><img width="80" src="https://www.google.com.hk/images/branding/googlelogo/2x/googlelogo_color_120x44dp.png"/></li>
          <li style="display:none;"><img width="80" src="https://www.sogou.com/images/logo2014/error180x60.png"/></li>
        </ul>
      </td>
      <td id="from_box" style="padding-left:10px;">
        <form id="from_baidu" style="display:block" action="http://www.baidu.com/baidu" target="_blank" method="get">
          <input name="" type="hidden" value="baidu"/>
          <input type="text" name="word"/>
          <input class="button" type="submit" value="百度一下" onMouseOver="this.style.opacity=&#39;1&#39;" onMouseOut="this.style.opacity=&#39;0.7&#39;"/>
        </form>
        <form id="from_google" style="display:none" action="http://www.google.com/search" target="_blank" method="get">
          <input type="text" name="q"/>
          <input class="button" type="submit" value="google搜索" onMouseOver="this.style.opacity=&#39;1&#39;" onMouseOut="this.style.opacity=&#39;0.7&#39;"/>
        </form>
        <form id="from_sougou" style="display:none" action="http://www.sogou.com/web" target="_blank" name="sogou_queryform">
          <input type="text" name="query">
          <input class="button" type="submit" value="sougou搜索" onMouseOver="this.style.opacity=&#39;1&#39;" onMouseOut="this.style.opacity=&#39;0.7&#39;"/>
        </form>
      </td>
    </tr>
  </table>
</p>
<script>
  var search = document.getElementById("search");
  var formbox = document.getElementById(&#39;from_box&#39;);
  var forms = formbox.getElementsByTagName("form");
  var ul = search.getElementsByTagName("ul")[0];
  var li = ul.getElementsByTagName("li");
  var length = li.length;
  li[0].onclick = function() {
    for(var i = 1; i < length; i++) {
      li[i].style.display = "block";
    }
  }
  var n = 0; //第一个显示表单的位置
  for(var i = 1; i < length; i++) {
    li[i].onclick = function(a) {
      return function() {
        //交换显示的html内容
        var temp = li[0].innerHTML;
        li[0].innerHTML = this.innerHTML;
        this.innerHTML = temp;
        for(var j = 1; j < length; j++) {
          li[j].style.display ="none";
        }
        //交换表单的显示
        //alert(li[0].innerHTML.substring(37,7));
        //alert(li[0].innerHTML.indexOf(&#39;baidu&#39;));
        hidden_from(); //隐藏表单
        if(li[0].innerHTML.indexOf(&#39;baidu&#39;) > 0) {
          document.getElementById(&#39;from_baidu&#39;).style.display = &#39;block&#39;;
        } else if(li[0].innerHTML.indexOf(&#39;google&#39;) > 0) {
          document.getElementById(&#39;from_google&#39;).style.display = &#39;block&#39;;
        } else if(li[0].innerHTML.indexOf(&#39;sougou&#39;) > 0) {
          document.getElementById(&#39;from_sougou&#39;).style.display = &#39;block&#39;;
        }
        //alert(this.innerHTML);
        //forms[n].style.display = "none";
        //forms[a].style.display = "block";
        //n = a;
      }
    }(i);
    li[i].onmouseover = function() {
      this.style.border ="#7fb80e 1px solid";
      this.style.background ="#f2eada";
    }
    li[i].onmouseout = function() {
      this.style.border = "0px";
      this.style.background = "inherit";
    }
  }
  //隐藏搜索框表单的函数
  function hidden_from() {
    for(var j = 0; j < forms.length; j++) {
      forms[j].style.display = "none";
    }
  }
</script>
</body>
</html>

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