繁體中文当前位置: 首页 > 图文教程 > 网络编程 > Javascript > 学习Ajax教程，详细了解Get与Post
- Javascript
- form中限制文本字节数js代码
- use jscript with List Proxy Server Information
- use jscript List Installed Software
- List Installed Software Features
- List Information About the Binary Files Used by an Application
- List the Codec Files on a Computer
- List the UTC Time on a Computer
- List Installed Hot Fixes
- excel操作之Add Data to a Spreadsheet Cell
- Add Formatted Data to a Spreadsheet
- Apply an AutoFormat to an Excel Spreadsheet
- JavaScript语法着色引擎（demo及打包文件下载）
- 类之Prototype.js学习
- 一款JavaScript压缩工具：X2JSCompactor
- iis6+javascript Add an Extension File
- jscript之Open an Excel Spreadsheet
- jscript之Read an Excel Spreadsheet
- jscript之List Excel Color Values
- 去除图像或链接黑眼圈的两种方法总结
- Add a Formatted Table to a Word Document
Javascript 中的 学习Ajax教程，详细了解Get与Post
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-28 浏览: 367 ::
收藏到网摘: n/a
学习Ajax教程，详细了解Get与Post
Get方式:
作用:可传送简单数据
大小:url最大长度是2083 bytes,可以用于GET传递数据的长度是2048 bytes
包含体:数据追加到url中发送,也就是http的header传送
Post方式:
作用:可传送简单复杂数据
大小:web.config里限制
包含体:数据在http请求的实体内容里传送
Ajax用Post模式传送数据.需注意：
1.设置header的Context-Type为application/x-www-form-urlencode确保服务器知道实体中有参数变量.通常使用XmlHttpRequest对象的SetRequestHeader("Context-Type","application/x-www-form-urlencoded;")
2.参数是名/值一一对应的键值对,每对值用&号隔开.如 name=abc&sex=man&age=18.
3.参数在Send(参数)方法中发送
4.服务器端请求参数区分Get与Post.例如asp.net中以Request.Form["name"]对实体中的参数请求.这时url参数请求Request.QueryString["name"]将引发异常
<javascript language="javascript>
function StateEvent()
{
if(XmlHttpObject.readyState == 4)
{
if(XmlHttpObject.status == 200)
{
//code
}
}
}
function CreateXmlHttp()
{
if(window.ActiveXObject)
{
return new ActiveXObject("Microsoft.XMLHTTP");
}
else if (window.XMLHttpRequest)
{
return new XmlHttpRequest();
}
}
function Start()
{
var ParamString = "name=abc&sex=man&age=18";
var XmlHttpObject = CreateXmlHttp();
XmlHttpObject.onreadystatechange = StateEvent;
XmlHttpObject.open("post","test.aspx",true);
XmlHttpObject.setRequestHeader("Content-Type","application/x-www-form-urlencoded;"); //设置服务器响应请求体参数
XmlHttpObject.send(ParamString);
}
</script>
function StateEvent()
{
if(XmlHttpObject.readyState == 4)
{
if(XmlHttpObject.status == 200)
{
//code
}
}
}
function CreateXmlHttp()
{
if(window.ActiveXObject)
{
return new ActiveXObject("Microsoft.XMLHTTP");
}
else if (window.XMLHttpRequest)
{
return new XmlHttpRequest();
}
}
function Start()
{
var ParamString = "name=abc&sex=man&age=18";
var XmlHttpObject = CreateXmlHttp();
XmlHttpObject.onreadystatechange = StateEvent;
XmlHttpObject.open("post","test.aspx",true);
XmlHttpObject.setRequestHeader("Content-Type","application/x-www-form-urlencoded;"); //设置服务器响应请求体参数
XmlHttpObject.send(ParamString);
}
</script>
评论 (0) All
