ajax技术制作得在线歌词搜索功能
编程学习 2021-07-05 10:36www.dzhlxh.cn编程入门
代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body>
<style type="text/css">
<!--
body {
background-color: #FFFFFF;
font-size: 85%;
font-family: Verdana;
margin-top : 10px;
margin-left : 10px;
}
a:link{color:#3737c8}
a:active {color: #f00;}
a:visited {color:#639;}
-->
</style>
<script language="javascript">
var http_request = false;
function send_request(url) {//初始化、指定处理函数、发送请求的函数
http_request = false;
//开始初始化XMLHttpRequest对象
if(window.XMLHttpRequest) { //Mozilla 浏览器
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {//设置MiME类别
http_request.overrideMimeType('text/xml');
}
}
else if (window.ActiveXObject) { // IE浏览器
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!http_request) { // 异常，创建对象实例失败
window.alert("不能创建XMLHttpRequest对象实例.");
return false;
}
http_request.onreadystatechange = processRequest;
// 确定发送请求的方式和URL以及是否同步执行下段代码
http_request.open("GET", url, true);
http_request.send(null);
}
// 处理返回信息的函数
function processRequest() {
if (http_request.readyState == 4) { // 判断对象状态
if (http_request.status == 200) { // 信息已经成功返回，开始处理信息
//alert(http_request.responseText);
document.getElementById("result").innerHTML = http_request.responseText;
} else { //页面不正常
alert("您所请求的页面有异常。");
}
}
}
function dosearch() {
var f = document.form1;
var geci = f.geci.value;
if(geci=="") {
window.alert("请输入你要查询的歌词");
f.geci.focus();
return false;
}
else {
document.getElementById("result").innerHTML="正在查询，请稍候";
send_request('http://www.efish.cn/getgeci.aspx?m='+escape(geci));
}
}
function submitForm() {
if(window.event.keyCode==13) {
dosearch();
}
}
</script>
<p></p><p></p>
<form id="form1" name="form1" method="post" action="">
<center><span style="font-size:18px; color:#FF0000">十万歌词在线免费查询</span></center>
<p></p>
请输入歌曲名：
<input name="geci" type="text" id="geci" value="东风破" size="60" height="30" maxlength="50" onKeyDown="submitForm()" />
<input type="button" name="search" value="查询歌词" onClick="dosearch()"><br />
<span id="result"></span>
</form>
</body>
</html>
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