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[原创]ajax 实现用户注册功能教程二

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Release: 2016-06-13 10:13:07
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[原创]ajax 实现用户注册功能教程二','

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上面第一个reg.php文件己经做好了,我就来做第二步

var xmlHttp = false;
function ajaxcreate(){//这里是创建xmlhttpt对像

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(){//这里是接到reg.php onblur()事件后要进行的操作,

 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="

正在验证中,请稍后...
";


 }

 if(xmlHttp.readyState == 4 ){


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


 }


}

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