[Original] Ajax implementation of user registration function tutorial 2_PHP tutorial

[Original] Ajax implementation of user registration function tutorial 2','

//

This tutorial is original from this site, please indicate the source when reprinting

Author: www.drise.cn

Email:drise@163.com

QQ:271728967

//

The first reg.php file above has been completed, I will do the second step

var xmlHttp = false;
function ajaxcreate(){//Here is the creation of xmlhttpt object

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();

}

if(!xmlHttp){alert(\'Create Xmlhttp Fail \');return false;}

}

function ajax(){//Here are the operations to be performed after receiving the reg.php onblur() event,

ajaxcreate();

var xmvalue=document.getElementById("xm").value;

var url="/boke/blog/type.php?txt="+encodeURI(xmvalue);

if (xmvalue== null || xmvalue.length>20 || xmvalue == "") return false;

xmlHttp.open("POST",url,true);

xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

xmlHttp.send(xmvalue);

xmlHttp.onreadystatechange=returnstate;

}

function returnstate(){

if(xmlHttp.readyState != 4 ){

document.getElementById("divxm").innerHTML="

Verifying, please wait...

}

if(xmlHttp.readyState == 4 ){

document.getElementById("divxm").innerHTML=xmlHttp.responseText;

}

}

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