可切换搜索引擎的导航网页搜索框，可以换百度、谷歌、搜狗不同的搜索方式

向右看齐 2021-09-10 15:38 412阅读 0赞

效果图如下：

![20151023110324915][]

![20151023110341795][]![20151023110352257][]![20151023110420734][]

代码如下：

<!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>
    		<div id="search" align="center">
    			<table>
    				<tr>
    					<td>
    						<ul>
    							<li style="display:block;"><img src="image/search_mark/1_wangye_baidu.gif" /></li>
    							<li style="display:none;"><img src="image/search_mark/1_wangye_google.gif" /></li>
    							<li style="display:none;"><img src="image/search_mark/1_wangye_sougou.gif" /></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='1'" onMouseOut="this.style.opacity='0.7'" />
    						</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='1'" onMouseOut="this.style.opacity='0.7'" />
    						</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='1'" onMouseOut="this.style.opacity='0.7'" />
    						</form>
    					</td>
    				</tr>
    			</table>
    		</div>
    		<script>
    			var search = document.getElementById("search");
    			var formbox = document.getElementById('from_box');
    			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('baidu'));
    						hidden_from(); //隐藏表单
    						if (li[0].innerHTML.indexOf('baidu') > 0) {
    							document.getElementById('from_baidu').style.display = 'block';
    						} else if (li[0].innerHTML.indexOf('google') > 0) {
    							document.getElementById('from_google').style.display = 'block';
    						} else if (li[0].innerHTML.indexOf('sougou') > 0) {
    							document.getElementById('from_sougou').style.display = 'block';
    						}
    						//						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>

源码以及图片下载地址：[http://download.csdn.net/detail/u014175572/9205821][http_download.csdn.net_detail_u014175572_9205821]

[20151023110324915]: /images/20210522/d9978122531543a780139a5df44ee084.png
[20151023110341795]: https://img-blog.csdn.net/20151023110341795
[20151023110352257]: https://img-blog.csdn.net/20151023110352257
[20151023110420734]: /images/20210522/4305f7df57ab48f39da2a2f72445cf5a.png
[http_download.csdn.net_detail_u014175572_9205821]: http://download.csdn.net/detail/u014175572/9205821