PHP ajax verification user name implementation code (1/3)_PHP tutorial

The following is a complete implementation code for ajax user name verification before registration. Just save it as required.

ajax user verification body { font: 12px, arial, helvetica, sans-serif; color: #808080 } #reg{ width: 600px; border: 1px dotted #336699; } td{font-size:12px;color:} h1{ height:35px; font-size:16px; color:#ffffff; background-color: #336699; line-height: 30px; padding-left:25px; }

.anniu { border-right: #666666 1px solid; padding-right: 1px; border-top: #ffffff 1px solid; padding-left: 1px; font-size: 9pt; padding-bottom: 1px; border-left: #ffffff 1px solid ; cursor: hand; color: #333333; padding-top: 1px; border-bottom: #666666 1px solid; font-family: "宋体"; height: 20px; background-color: #eeeeee } .framedivpass{

border: 1px solid #6fbe44; padding: 2px; height: 100%; float: left; } .framedivwarn{

border: 1px solid #ff0000; padding: 2px; height: 100%; float: left; } var xmlhttp = false; try { xmlhttp = new activexobject("msxml2.xmlhttp"); } catch (e) { try { xmlhttp = new activexobject("microsoft.xmlhttp"); } catch (e2) { xmlhttp = false; } } if (!xmlhttp && typeof xmlhttprequest != 'undefined') { xmlhttp = new xmlhttprequest(); } function ajax(data){ xmlhttp.open("get","user_ck.php tutorial?username="+document.getelementbyid("username").value,true); xmlhttp.send(null); Document.getelementbyid('username_notice').innerhtml = process_request;//Display status xmlhttp.onreadystatechange=function(){ if (4==xmlhttp.readystate){ If (200==xmlhttp.status){ var responsetext = xmlhttp.responsetext; If (responsetext=="true" ){ ck_user("true"); } else{ ck_user("false"); } }else{ alert("An error occurred!"); } } } } function chkusername(obj){ If (checks(obj.value)== false) { Obj.classname = "framedivwarn"; Showinfo("username_notice",msg_un_format); change_submit("true"); } else if(obj.value.length Obj.classname = "framedivwarn"; Showinfo("username_notice",msg_un_blank); change_submit("true"); }

else if(obj.value.length Obj.classname = "framedivwarn"; Showinfo("username_notice",username_shorter); change_submit("true"); } else{ //Call the ajax function and send the query to the server ajax(obj.value); }

}

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http://www.bkjia.com/PHPjc/631725.html www.bkjia.com true http: //www.bkjia.com/PHPjc/631725.html TechArticle The following is a complete implementation code for ajax user name verification before registration. Just save it as required. That's it. Below is a complete ajax verification username before registration...