| 代碼如下 |
複製代碼 |
if (document.register.email.value.charAt(0)=="." ||
document.register.email.value.charAt(0)=="@"||
document.register.email.value.indexOf('@', 0) == -1 ||
document.register.email.value.indexOf('.', 0) == -1 ||
document.register.email.value.lastIndexOf("@")==document.register.email.value.length-1 ||
document.register.email.value.lastIndexOf(".")==document.register.email.value.length-1)
{
alert("電子郵箱格式不正確！");
document.register.email.focus();
return false;
} sendRequest("checkemail.asp?email=" + document.register.email.value);
if (return_str=="0"){
alert("該郵箱已經存在，請另選一個");
document.register.email.focus();
document.register.email.select();
return false
} |
//ajax處理
| 代碼如下 |
複製代碼 |
var return_str=""
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
function sendRequest(sndStr)
{
var xmlDom = new ActiveXObject("Msxml2.DOMDocument");
xmlhttp.open("GET", sndStr, false);
xmlhttp.onreadystatechange = sendRequest_check;
xmlhttp.Send(xmlDom);
}
//--------------------------------------------------------
function sendRequest_check()
{
var state = xmlhttp.readyState;
var xmlDom = new ActiveXObject("Msxml2.DOMDocument");
if (state == 4)
{
xmlDom.loadXML(xmlhttp.responseXML.xml);
return_str = xmlDom.documentElement.selectSingleNode("//objXML").text;
}
} |
checkemail.asp檔案你只要接受到使用者的資訊，在資料庫中檢測一下就ＫＯ了。
