本篇文章主要是對動態創建script標簽實現跨域資源訪問的方法進行了介紹，需要的朋友可以過來參考下，希望對大家有所幫助
login.html 代碼如下: <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("登陸成功"); } else { alert("登陸失敗"); } } </script> <body> 用戶名：<input name="name" id="name" type="text" /> 密碼：<input name="password" id="password" type="password" /> <input name="" value="login" type="button" onclick="userLogin();" /> </body> login.jsp 代碼如下: <%@ 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"); <% } %>