当前位置: 首页 > 图文教程 > 网络编程 > Javascript > javascript 多种搜索引擎集成的页面实现代码

Javascript
javascript 异常处理使用总结
ExtJS扩展 垂直tabLayout实现代码
JavaScript 新手24条实用建议[TUTS+]
PNG背景在不同浏览器下的应用
实现超用户体验 table排序javascript实现代码
利用JQuery为搜索栏增加tag提示
JQuery 前台切换网站的样式实现
WordPress JQuery处理沙发头像
js form 验证函数 当前比较流行的错误提示
JQuery 无废话系列教程(一) jquery入门 [推荐]
jQuery 表单验证插件formValidation实现个性化错误提示
JQuery 入门实例1
jQuery 可以拖动的div实现代码 修正版
javascript DOM对象的学习实例代码
css 二级菜单 实现代码集合 修正版
ExtJS GTGrid 简单用户管理
jQuery DIV弹出效果实现代码
Javascript 调试利器 Firebug使用详解六
深入javascript json QQ网页登陆
类似新浪网的 弹出视频功能实现代码

Javascript 中的 javascript 多种搜索引擎集成的页面实现代码


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2010-01-10   浏览: 423 ::
收藏到网摘: n/a

这个页面是为了方便自己同时使用多种搜索引擎(呵呵我用其作默认主页),在IE5/IE6/FireFox下均运行正常,效果如下图 - 输入一个关键词,鼠标点击后面的搜索引擎链接,即可进入到该引擎的页面
- 如果输入关键词后敲回车,则使用默认搜索引擎,而每选择新的搜索引擎,默认引擎也会随之改变
- 自动记忆上次使用的搜索引擎,后面添加*

源代码如下,使用了多种IE/FF的适应办法:
复制代码 代码如下:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">
<!--
.normal {font-family: "Verdana","Arial";font-size:14px}
.small {font-family: "Verdana","Arial";font-size:12px}
body { font-family: "Verdana","Arial";font-size:14px}
td {font-family: "Verdana","Arial";font-size:14px}
th {font-family: "Verdana","Arial";font-size:15px}
input {font-family: "Verdana","Arial";font-size:14px}
a {text-decoration:underline; color:blue}
a:link { text-decoration:underline; color: blue }
a:visited { text-decoration:underline; color: blue }
a:hover { text-decoration: underline; color: red }
-->
</style>
<title>My Portal</title>
<script language="javascript">
// 这一段使得FireFox也支持IE的innerText方法
function isIE(){
if (window.navigator.userAgent.toLowerCase().indexOf("msie")>=1)
return true;
else
return false;
}
if(!isIE()){ //firefox innerText define
HTMLElement.prototype.__defineGetter__( "innerText",
function(){
var anyString = "";
var childS = this.childNodes;
for(var i=0; i <childS.length; i++) {
if(childS[i].nodeType==1)
anyString += childS[i].tagName=="BR" ? '\n' : childS[i].innerText;
else if(childS[i].nodeType==3)
anyString += childS[i].nodeValue;
}
return anyString;
}
);
HTMLElement.prototype.__defineSetter__( "innerText",
function(sText){
this.textContent=sText;
}
);
}
// 这一段使得FireFox的HTMLElement具有click方法(add click method to HTMLElement in Mozilla)
try {
// create span element so that HTMLElement is accessible
document.createElement('span');
HTMLElement.prototype.click = function () {
if (typeof this.onclick == 'function')
this.onclick({type: 'click'});
};
}
catch (e) {
// alert('click method for HTMLElement couldn\'t be added');
}
// 对HTMLAnchorElement 加入onclick事件
try {
// create a element so that HTMLAnchorElement is accessible
document.createElement('a');
HTMLElement.prototype.click = function () {
if (typeof this.onclick == 'function') {
if (this.onclick({type: 'click'}) && this.href)
window.open(this.href, this.target? this.target : '_self');
}
else if (this.href)
window.open(this.href, this.target? this.target : '_self');
};
}
catch (e) {
// alert('click method for HTMLAnchorElement couldn\'t be added');
}
// 跟踪回车键事件
function captureKeys (evt) {
var keyCode = evt.keyCode ? evt.keyCode :
evt.charCode ? evt.charCode : evt.which;
if (keyCode == 13) {
// cancel key:
if (evt.preventDefault) {
evt.preventDefault();
}
var dq = getCookie('default-engine');
if( dq == null) dq = "baidu_txt";
submit_query( dq );
return false;
}
return true;
}
// cookie 功能函数
function getCookie(cookieName)
{
var cookieString = document.cookie;
var start =cookieString.indexOf(cookieName+'=');
if(start == -1)
return null;
start += cookieName.length + 1;
var end = cookieString.indexOf(';', start);
if(end == -1)
return unescape(cookieString.substring(start));
return unescape(cookieString.substring(start,end));
}
function setCookie(cookieName, cookieValue)
{
var expires = new Date();
expires.setTime( expires.getTime() + 3*30*24*60*60*1000); // 3 months
document.cookie = cookieName + '=' + escape(cookieValue)+';expires='+expires.toGMTString();
}
function removeCookie(cookieName)
{
var expires = new Date();
expires.setTime( expires.getTime() - 1);
document.cookie = cookieName + '=fooxxx;expires='+expires.toGMTString();
}
function $(id) {
return document.getElementById(id);
}
// 调式Object用,适用于IE,Firefox下可用firebug
function dumpObject(obj)
{
var temp="";
for (x in obj)
temp += x + ": " + obj[x] + "\n";
var popup = window.createPopup();
popup.document.body.innerHTML = '<textarea rows=30 cols=40>' + temp + '</textarea>';
popup.show(100, 100, 300, 400, document.body);
}
// 多种查询引擎请求分派
function submit_query(t_query)
{
var keyword = document.getElementById("keyword");
var mylink = document.getElementById("mylink");
var loc = "";
switch(t_query)
{
case "baidu_txt":
loc = "http://www.baidu.com/s?wd=" + keyword.value;
break;
case "baidu_img":
loc = "http://image.baidu.com/i?ct=201326592&lm=-1&tn=baiduimagenojs&pv=&word=" + keyword.value + "&z=0&pn=0&rn=16&cl=2";
break;
case "yodao_txt":
loc = "http://www.yodao.com/search?q=" + encodeURI(keyword.value) + "&ue=utf8&keyfrom=web.index";
break;
case "yodao_img":
loc = "http://image.yodao.com/search?q=" + encodeURI(keyword.value) + "&ue=utf8&keyfrom=image.index";
break;
case "yodao_dict":
loc = "http://dict.yodao.com/search?q=" + encodeURI(keyword.value) + "&ue=utf8&keyfrom=dict.index";
break;
case "yodao_blog":
loc = "http://blog.yodao.com/search?q=" + encodeURI(keyword.value) + "&ue=utf8&keyfrom=blog.top";
break;
case "iask_ditu":
loc = "http://ditu.iask.com/a/r.php?cl=北京&key=" + keyword.value;
break;
case "verycd":
loc = "http://www.verycd.com/search/folders/" + encodeURI(keyword.value);
break;
case "google_txt":
loc = encodeURI("http://www.google.com/search?hl=en&q=" + keyword.value +"&btnG=Google+Search");
break;
case "yahoo_txt":
loc = "http://search.yahoo.com/search?p="+encodeURI(keyword.value)+"&vc=&fr=yfp-t-501&toggle=1&cop=mss&ei=UTF-8&fp_ip=CN";
break;
case "trans_en":
loc = "http://209.85.171.104/translate_c?hl=en&sl=en&tl=zh-CN&u=http://" + keyword.value + "/&usg=ALkJrhijPevZUxPtrHDj94k1U9Wo8x7S8g";
break;
case "google_code":
loc = "http://www.google.com/codesearch?q=" + keyword.value + "&hl=en&btnG=Search+Code";
break;
case "google_scholar":
loc = "http://scholar.google.com/scholar?q=" + keyword.value + "&hl=en&lr=&btnG=Search";
break;
}
setEngine(t_query);
setCookie('default-engine', t_query);
mylink.href= loc;
mylink.click();
}
function getDefaultEngine()
{
var dq = getCookie('default-engine');
if( dq == null) dq = "baidu_txt";
return dq;
}
function setDefaultEngine()
{
var old_e = getDefaultEngine();
if( $(old_e).innerText.indexOf('*') < 0)
$(old_e).innerText = $(old_e).innerText + '*';
}
function setEngine( new_e )
{
var old_e = getDefaultEngine();
if( $(old_e).innerText.indexOf('*') >= 0)
$(old_e).innerText = $(old_e).innerText.replace('*','');
if( $(new_e).innerText.indexOf('*') < 0)
$(new_e).innerText = $(new_e).innerText + '*';
setCookie('default-engine', new_e);
}
</script>
</head>
<body onload='setDefaultEngine()'>
<table border="0" width="100%">
<tr><td>
<a href="http://www.google.com" id="mylink" target="_blank">Search:</a>
<input type="text" name="keyword" size="20" id="keyword" onkeypress="return captureKeys(event);">
<a href="#" id='baidu_txt' onclick="submit_query('baidu_txt')">百度</a>
<a href="#" id='google_txt' onclick="submit_query('google_txt')">Google</a>
<a href="#" id='yodao_txt' onclick="submit_query('yodao_txt')">有道</a>
<a href="#" id='yodao_blog' onclick="submit_query('yodao_blog')">博客</a>
<a href="#" id='google_code' onclick="submit_query('google_code')">代码</a>
<a href="#" id='google_scholar' onclick="submit_query('google_scholar')">论文</a>
<a href="#" id='baidu_img' onclick="submit_query('baidu_img')">百图</a>
<a href="#" id='yodao_img' onclick="submit_query('yodao_img')">有图</a>
<a href="#" id='yodao_dict' onclick="submit_query('yodao_dict')">词典</a>
<a href="#" id='iask_ditu' onclick="submit_query('iask_ditu')">地图</a>
<a href="#" id='verycd' onclick="submit_query('verycd')">CD</a>
<a href="#" id='yahoo_txt' onclick="submit_query('yahoo_txt')">Yahoo</a>
<a href="#" id='trans_en' onclick="submit_query('trans_en')">翻译</a>
</td></tr>
</table>
</body>
</html>