采用一个开源的AJAX库:Ajax Toybox
描述:
在注册或购物车结帐的时候,需要用户填入个人资料,这个环节可以简练一下,我们只需客人填入邮政编码,然后就根据这个邮政编码,自动从数据库中取出相应的省,市等地址信息。这样既可以减少客户的输入,增加客户体验,又可以减少由于资料输入而产生的错误。
实现:
HTML
script
function createRequestObject() {
var ro;
var browser = navigator.appName;
if(browser == "Microsoft Internet Explorer"){
ro = new ActiveXObject("Microsoft.XMLHTTP");
}else{
ro = new XMLHttpRequest();
}
return ro;
}
var http = createRequestObject();
(本文来源于图老师网站,更多请访问http://m.tulaoshi.com/webkaifa/)function sndReq(zip) {
http.open('get', 'zipcode.php?zip='+zip);
http.onreadystatechange = handleResponse;
http.send(null);
}
function handleResponse() {
if(http.readyState == 4){
var response = http.responseText;
var update = new Array();
if(response.indexOf('|' != -1)) {
update = response.split('|');
document.getElementById("city").value = update[0];
document.getElementById("state").value = update[1];
}
}
}
/script
h3Enter A United States Zipcode, Then Tab/h3
table align="center"
tr
tdEnter Zipcode:/td
tdinput type="text" id="zipcode" name="zipcode" onBlur="sndReq(this.value);"//td
/tr
tr
tdCity:/td
tdinput type="text" id="city" name="city"//td
/tr
tr
tdState:/td
tdinput type="text" id="state" name="state"//td
/tr
/table
以上是客户输入页面,下面是服务端的处理页面'zipcode.php
?php
dbuser = 'root';
dbpass = '111111';
cn = mysql_connect("localhost", dbuser, dbpass);
db = mysql_select_db("ajax");
sql = "select city, state from zipcodes where zipcode = " . _REQUEST['zip'];
rs = mysql_query(sql);
row = mysql_fetch_array(rs);
echo row['city'] . "|" . row['state'];
mysql_close(cn);
?
当客户输入一个POSTCODE后,zipcode.php就接收到它,然后进行从数据表中取出对应的资料,再按一定的格式返回给客户端(此处是以 | 分隔)。最后客户端接收返回的资料,显示在页面上。
if(response.indexOf('|' != -1)) {
update = response.split('|');
document.getElementById("city").value = update[0];
document.getElementById("state").value = update[1];
}