JavaScript 13 Ajax技术（未完)

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我是靠谱客的博主勤恳舞蹈，最近开发中收集的这篇文章主要介绍JavaScript 13 Ajax技术（未完)，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

<body>
	<!-- 添加文档主体内容 -->
	<header>
 <nav>JavaScript - Ajax - 读取XML文件</nav>  </header>  <hr>  <div id="id-div-form">  <form id="id-form"  name="name-form"  action="#"  method="get"  target="_blank"  accept-charset="utf-8">  <table>  <caption>Ajax - 读取XML文件</caption>  <tr>  <td class="td-label"><label>源文件</label></td>  <td>xml-table.xml</td>  </tr>  <tr>  <td class="td-label"><label>Ajax方式</label></td>  <td><input type="button" value="读取" οnclick="on_ajax_load_xml_click();"/></td>  </tr>  </table>  </form>  </div>  <div id="id-xml-table"></div>  <!-- 添加文档主体内容 -->  <script type="text/javascript">  var g_xhr;   function creatXMLHttpRequest() {  var xhr;  if (window.ActiveXObject) {  xhr = new ActiveXObject("Microsoft.XMLHTTP");  } else if (window.XMLHttpRequest) {  xhr = new XMLHttpRequest();  } else {  xhr = null;  }  return xhr;  }   function on_ajax_load_xml_click() {  g_xhr = creatXMLHttpRequest();  if (g_xhr) {  g_xhr.onreadystatechange = handleStateChange;  g_xhr.open("GET", "xml-table.xml", true);  g_xhr.setRequestHeader("CONTENT-TYPE", "application/x-www-form-urlencoded");  g_xhr.send(null);  }  }   function handleStateChange() {  if (g_xhr.readyState == 4) {  if (g_xhr.status == 200) {  console.log("The server response: " + g_xhr.responseText);  document.getElementById("id-xml-table").innerHTML = g_xhr.responseText;  console.log("The server response: " + g_xhr.responseXML);  document.getElementById("id-xml-table").innerHTML += g_xhr.responseXML;  }  }  }  </script> </body> 
POST请求方式

<body>
<!-- 添加文档主体内容 -->
<header>
<nav>JavaScript - Ajax - POST请求方式</nav> </header> <hr> <div id="id-div-form">
<form id="id-form"
name="name-form"
action="#"
method="post"
target="_blank"
accept-charset="utf-8">
<table>
<caption>Ajax - POST请求方式</caption>
<tr>
<td class="td-label"><label>用户名</label></td>
<td><input type="text" id="id-input-username" value=""/></td>
</tr>
<tr>
<td class="td-label"><label>密码</label></td>
<td><input type="password" id="id-input-pwd" value=""/></td>
</tr>
<tr>
<td class="td-label"><label>Ajax方式</label></td>
<td>
<input type="button"
id="id-input-login"
value="登陆"
οnclick="on_login_click(this.id);"/>
</td>
</tr>
<tr>
<td class="td-label"><label>提示</label></td>
<td id="id-td-hint"></td>
</tr>
</table>
</form> </div> <!-- 添加文档主体内容 --> <script type="text/javascript">
var g_xhr;
function creatXMLHttpRequest() {
var xhr;
if (window.ActiveXObject) {
xhr = new ActiveXObject("Microsoft.XMLHTTP");
} else if (window.XMLHttpRequest) {
xhr = new XMLHttpRequest();
} else {
xhr = null;
}
return xhr;
}
function on_login_click(thisid) {
var param;
var p_username = document.getElementById("id-input-username").value;
var p_pwd = document.getElementById("id-input-pwd").value;
param = "username=" + p_username + "&pwd=" + p_pwd;
g_xhr = creatXMLHttpRequest();
if (g_xhr) {
g_xhr.onreadystatechange = handleStateChange;
g_xhr.open("POST", "ch13-ajax-post.php", true);
g_xhr.setRequestHeader("CONTENT-TYPE", "application/x-www-form-urlencoded");
g_xhr.send(param);  }  }   function handleStateChange() {  if (g_xhr.readyState == 4) {  if (g_xhr.status == 200) {  console.log("The server response: " + g_xhr.responseText);  document.getElementById("id-td-hint").innerHTML = g_xhr.responseText;  }  }  } </script> </body>