动态创建script标签实现跨域资源访问的方法

来源：互联网发布：红颜知已女闺蜜编辑：程序博客网时间：2024/06/06 09:24
login.html<script>function request(id,url){     oScript = document.getElementById(id);     var head = document.getElementsByTagName("head").item(0);     if (oScript) {        head.removeChild(oScript);     }     oScript = document.createElement("script");     oScript.setAttribute("src", url);     oScript.setAttribute("id",id);     oScript.setAttribute("type","text/javascript");     oScript.setAttribute("language","javascript");     head.appendChild(oScript);     return oScript;}function userLogin(){    var username=document.getElementById('name').value;    var password=document.getElementById('password').value;     //alert(username+"--"+password);  var url='http://127.0.0.1:8080/EasyCMS/login.jsp?name='+encodeURI(username)+'&password='+encodeURI(password)+'&s=' + (new Date()).getTime();//alert("url="+url);    var login=request("loginScript",url);}function myloginState(state){      alert("ret:"+state);      if (state==0)  {alert("登陆成功");  }  else  {       alert("登陆失败");  }}</script><body>用户名：<input name="name" id="name" type="text" />密码：<input name="password" id="password" type="password" /><input name="" value="login" type="button" onclick="userLogin();" /></body>login.jsp <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String name=request.getParameter("name");String password=request.getParameter("password");if (name.equals("admin") && password.equals("admin")){request.getSession().setAttribute("admin","admin");%>myloginState("0"); <%}else{%>myloginState("1"); <% }%>