php ajax邮箱,php jquery ajax邮箱地址无刷新验证实例

Love The Way You Lie 2023-01-15 03:37 147阅读 0赞

要实现无刷新页面我们一般会用到ajax来实现，以前是使用最原始的js ajax验证现在常用的jquery ajax了只要简单的一句post即可解决了，下面我们看实例

index.php页面

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 <td colspan="2">php jquery check username ajax检查帐号唯一性$(document).ready(function(){ $('#username').keyup(username_check);});function username_check(){ var username = $('#username').val();if(username == "" || username.length &lt; 4){ $('#username').css('border', '3px #CCC solid');$('#tick').hide();}else{ jQuery.ajax({ type: "POST",url: "check.php",data: 'username=' username,cache: false,success: function(response){ if(response == 1){ //不可以注册$('#username').css('border', '3px #C33 solid');$('#tick').hide();$('#cross').fadeIn();}else{ $('#username').css('border', '3px #090 solid');$('#cross').hide();$('#tick').fadeIn();}}});}}#username{ padding:3px;font-size:18px;border:3px #CCC solid;}#tick{display:none}#cross{display:none}Username: <img width="16" height="16" alt="tick.png"> <img width="16" height="16" alt="cross.png">php验证页面，此页面接收到jquery ajax post过来的数据进行验证并返回值 
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 <td colspan="2"># FileName="Connection_php_mysql.htm"# Type="MYSQL"# HTTP="true"$hostname_lr = "localhost";$database_lr = "ordersiliconebracelets";$username_lr = "root";$password_lr = "";$lr = mysql_pconnect($hostname_lr, $username_lr, $password_lr) or trigger_error(mysql_error(),E_USER_ERROR);mysql_query("set names utf8;");//if ($lr) { //echo "非常好,MYSQL连接成功了!";//} else { //echo "不好意思,失败了！";//}mysql_select_db($database_lr, $lr);//$username = trim(strtolower($_POST['username']));$username = mysql_escape_string($username);if (eregi("^[_.0-9a-z-] @([0-9a-z][0-9a-z-] .) [a-z]{2,3}$",$username)) { //email通过检查$query = "SELECT email FROM user WHERE email = '$username' LIMIT 1";$result = mysql_query( $query );$num = mysql_num_rows($result);echo $num;}else{ echo "1";//不能注册}?&gt;</td> 
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