JQuery Ajax 获取数据

时间:2022-03-21 14:03:12

前台页面:   对一张进行查询,删除,添加

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<script src="jquery.js"></script>
</head>
<body>
<span id="s1"></span>
<input type="button" id="gget" value="获取" />
<div id="tb"></div>
</body>
</html>
<script>
//获取表
$("#gget").click(function () {
//把id为tb的Html清除
$("#tb").html("");
$("#s1").append('<img src="img/Loading2.gif" />');
//get方式传值
$.get("table.ashx", function (data) {
$("#s1").html("");
//把获取的字符串添加到tb中
var dv = "<div>" + data + "</div>";
$("#tb").append(dv);
});
});
//删除脚本
function dd(id) {
$("#tb").html("");
$("#s1").append('<img src="img/Loading2.gif" />');
//把你要删除的ID传过去做删除
$.get("table.ashx", { "id": id }, function (data) {
$("#s1").html("");
var dv = "<div>" + data + "</div>";
$("#tb").append(dv);
});
};
//添加脚本
function ff() {
//如果按钮为添加
if ($("#in").val() == "添加") {
//判断账号不为空
if ($("#name").val().trim()== "") {
alert("账号不能为空");
return;
}
else {
//判断密码不为空
if ($("#pwd").val().trim() == "") {
alert("密码不能为空");
return;
}
//密码账号不为空就做添加
else {
var name = $("#name").val();
var pwd = $("#pwd").val();
var sex = $("#sex").attr("checked"); //获取性别
var admiID = $("#Admin").val();
$.get("table.ashx", { "name": name, "pwd": pwd, "sex": sex, "adminID": admiID }, function (data) {
$("#tb").html("");
var dv = "<div>" + data + "</div>";
$("#tb").append(dv);
});
}
}
}
//如果按钮为编辑
if ($("#in").val() == "编辑") {
//把按钮改为添加
$("#in").val("添加");
//激活控件
$("#name,#pwd,#sex,#Admin").removeAttr("disabled");
} }
</script>

后台页面:   一般处理程序

<%@ WebHandler Language="C#" Class="table" %>

using System;
using System.Web;
using DAL;
using System.Data;
using System.Data.SqlClient; public class table : IHttpHandler { public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "text/plain";
//如果ID不为空就是做删除
if (context.Request.QueryString["id"]!=null)
{
int id = int.Parse(context.Request.QueryString["id"].ToString());
int r = SQLHelper.ExecuteNonQuery("delete Users where ID=@0", CommandType.Text, id);
if (r>)
{
Common(context);
}
}
else
{
//如果name不为空就做添加
if (context.Request.QueryString["name"]!=null)
{
string name = context.Request.QueryString["name"].ToString();
string pwd = context.Request.QueryString["pwd"].ToString();
bool sex = bool.Parse(context.Request.QueryString["sex"].ToString());
int adminID = int.Parse(context.Request.QueryString["adminID"].ToString());
int i = SQLHelper.ExecuteNonQuery("insert into Users values(@0,@1,@2,@3)", CommandType.Text, name, pwd,adminID,sex );
if (i>)
{
Common(context);
}
}
//都为空就是获取表
else
{
Common(context);
} } }
public void Common(HttpContext context)
{
SqlDataReader dr = SQLHelper.ExecuteReader("select * from Users", CommandType.Text);
string newTable = "<table cellspacing='1' cellpadding='3' id='GridView1' style='background-color:White;border-color:White;border-width:2px;border-style:Ridge;'><tr style='color:#E7E7FF;background-color:#4A3C8C;font-weight:bold;'><th scope='col'>ID</th><th scope='col'>UserName</th><th scope='col'>Password</th><th scope='col'>Sex</th><th scope='col'>AdminID</th><th scope='col'>删除</th></tr>";
//加载 数据行的字符串
     while (dr.Read())
   {
   string sex = "checked='checked'";
  if (dr[].ToString().ToLower() == "false")
sex = "";
  newTable += "<tr style='color:Black;background-color:#DEDFDE;'><td>" + dr[] + "</td><td>" + dr[] + "</td><td>" + dr[] + "</td><td><span class='aspNetDisabled'><input type='checkbox'" + sex + " disabled='disabled' /></span></td><td>" + dr[] + "</td>" +
   "<td><input type='button' onclick='javascript:dd(" + dr[] + ")' value='删除' /></td></tr>";
//<a href='javascript:__doPostBack('GridView1','Delete$0')' style='color:Black;'></a>
  }
dr.Close();
//加载 添加行的字符串
newTable += "<tr style='color:Black;background-color:#DEDFDE;'><td></td><td> <input type='text' id='name'"+
" disabled='disabled' /></td><td><input type='password' id='pwd' disabled='disabled' /></td><td><span "+
" class='aspNetDisabled'><input type='checkbox' id='sex' disabled='disabled' /></span></td><td>"+
" <select id='Admin' disabled='disabled' >" +
"<option value='1'>Admin</option>"+
" <option value='2'>Guest</option>"+
"<option selected value='3'>User</option>" +
"</select></td>" + "<td><input type='button' id='in' onclick='javascript:ff()' value='编辑' /></td></tr>";
newTable += "</table>";
//一张完整的表的字符串
context.Response.Write(newTable);
}
public bool IsReusable {
get {
return false;
}
} }