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This article mainly brings you an article about how to use ajax_examples and ajax data processing. The editor thinks it’s pretty good, so I’ll share it with you now and give it as a reference. Let’s follow the editor to take a look, I hope it can help everyone.
It should be noted that the encapsulated database called and the jQuery storage address
1. Registration
(1) Write a text box to verify the user name
//这个使用来显示提示信息的
(2) Use jQuery statement to write: The user name exists and cannot be used, the user name can be used
$("#uid").blur(function(){ //取用户名 var uid = $(this).val(); //查数据库，调ajax $.ajax({ //ajax方法中必须是json格式 url: "zhucecl.php", //处理页面的地址 data:{u:uid}, //这里是Json的格式:u是起的个名字，uid才是值 type:"POST", //数据提交方式 dataType:"TEXT", //返回的数据格式:字符串格式 success:function(data){ //成功的话返回匿名函数（回调函数） //执行处理页面成功后的语句 var str = ""; if(data=="OK") { str = "用户名可以使用"; $("#tishi").css("color","green"); } else { str = "已有用户名"; $("#tishi").css("color","red"); } $("#tishi").text(str); } }); })
(3) Registration processing page: Written I’ve done this many times, so I won’t explain it sentence by sentence
Query($sql); //判断用户名是否存在 if($attr[0][0]>0) { echo "NO"; //有重复的用户名 } else { echo "OK"; //没有重复的用户名 } ?>
2. Login
(1) Write the text box and login button
账号：
密码：
(2) Write jQuery statements
$("#btn").click(function(){ var uid=$("#uid").val(); //找到用户 var pwd=$("#pwd").val(); //找到密码 //调ajax方法，里面要用json格式 $.ajax({ url:"denglucl.php", //登陆的处理页面 data:{uid:uid,pwd:pwd}, type:"POST", dataType:"text", success: function(data) { if(data.trim()=="OK") { window.location.href="//m.sbmmt.com/m/faq/zhuce.php" rel="external nofollow" ; //用户名密码正确，进入一个页面 } else { alert("用户名密码输入错误"); } } }) })
(3) Login processing page: I have written it many times, so I won’t explain it step by step
Query($sql); if(!empty($pwd) && !empty($attr) && $attr[0][0]==$pwd) //密码不为空，数组不为空，输入密码和查出的密码是否相同 { echo "OK"; } else { echo "ON"; }
Successful login:
3. Ajax data processing
(1) First display the name row, Just edit it normally. The content you want to display
| 代号 | 名称 | 价格 | 产地 | 库存 | 操作 |
(2) Write a table to display the content
//里面放遍历的某个表中的数据内容
(3) Write jQuery and load the page After completion, execute
$(document).ready(function(e) { $.ajax({ url:"xianshicl.php", dataType:"TEXT", success: function(data){ //处理页面处理完成后执行的 });
(4) Write the display data processing page (two methods)
include("DBDA.class.php"); //调用封装好的类：注意存在位置 $db = new DBDA(); //造新对象 $sql = "select * from fruit"; //写sql语句 echo $db->StrQuery($sql); //1.调用封装好的拼接数组为字符串的方法 /* //2. $attr = $db->Query($sql); //调用封装类中的方法来执行sql语句 $str = ""; foreach($attr as $v) { $str .= implode("^",$v)."|"; //拼接数组为字符串 } echo substr($str,0,strlen($str)-1); //截取字符串：最后的拼接符不显示
*/
(5) After the processing page is completed, write in the success method in ajax on the main page The statement after entering the processing page
success: function(data){ var hang = data.split("|"); //拆分字符“|”串：显示行 var str = ""; for(var i=0;i"+lie[1]+" "+lie[2]+" "+lie[3]+" "+lie[5]+" 操作 "; //显示的行和单元格 } $("#bg").html(str); }
is displayed like this:
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