2006年8月4日
使用 XMLHttpRequest 对象

 

/* Create a new XMLHttpRequest object to talk to the Web server */
var xmlHttp = false;

/*@cc_on @*/
/*@if (@_jscript_version >= 5)

try {
  xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
  try {
    xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
  } catch (e2) {
    xmlHttp = false;
  }
}
@end @*/

if (!xmlHttp && typeof XMLHttpRequest != 'undefined') {
  xmlHttp = new XMLHttpRequest();
}

function callServer() {
  // Build the URL to connect to
  var url = "/test.aspx?id=" + escape(id) + "&name=" + escape(name);

  // Open a connection to the server
  xmlHttp.open("GET", url, true);

  // Setup a function for the server to run when it's done
  xmlHttp.onreadystatechange = updatePage;

  // Send the request
  xmlHttp.send(null);
}

function updatePage() {
  if (xmlHttp.readyState == 4) {
    var response = xmlHttp.responseText;
  }
}
posted @ 2006-08-04 15:20 dannyr|一个都不能少！ 阅读(195) 评论(0) 编辑
XMLHttpRequest object

Object Methods

Common XMLHttpRequest Object Methods

Method Description
abort() Stops the current request
getAllResponseHeaders() Returns complete set of headers (labels and values) as a string
getResponseHeader("headerLabel") Returns the string value of a single header label
open("method", "URL"[, asyncFlag[, "userName"[, "password"]]]) Assigns destination URL, method, and other optional attributes of a pending request
send(content) Transmits the request, optionally with postable string or DOM object data
setRequestHeader("label", "value") Assigns a label/value pair to the header to be sent with a request

Object Properties

Common XMLHttpRequest Object Properties

Property Description
onreadystatechange Event handler for an event that fires at every state change
readyState Object status integer:
0 = uninitialized
1 = loading
2 = loaded
3 = interactive
4 = complete
responseText String version of data returned from server process
responseXML DOM-compatible document object of data returned from server process
status Numeric code returned by server, such as 404 for "Not Found" or 200 for "OK"
statusText String message accompanying the status code

 

posted @ 2006-08-04 15:11 dannyr|一个都不能少！ 阅读(152) 评论(0) 编辑