for 循环运行来自 facebook api 的数据 (json)。 现在我想将fb数据放入我自己的数据库中(以供其他网站使用)
问题不在于读取数据，而在于提交的某个地方 我好像只能提交1次 我认为 theForm[x] 是问题所在。
代码是:
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
</head>
<body>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.init({
appId : ***, // App ID
status : true, // check login status
cookie : true, // enable cookies to allow the server to access the session
xfbml : true // parse XFBML
});
// Here we subscribe to the auth.authResponseChange JavaScript event. This event is fired
// for any authentication related change, such as login, logout or session refresh. This means that
// whenever someone who was previously logged out tries to log in again, the correct case below
// will be handled.
FB.Event.subscribe('auth.authResponseChange', function(response) {
// Here we specify what we do with the response anytime this event occurs.
if (response.status === 'connected') {
// The response object is returned with a status field that lets the app know the current
// login status of the person. In this case, we're handling the situation where they
// have logged in to the app.
testAPI();
} else if (response.status === 'not_authorized') {
// In this case, the person is logged into Facebook, but not into the app, so we call
// FB.login() to prompt them to do so.
// In real-life usage, you wouldn't want to immediately prompt someone to login
// like this, for two reasons:
// (1) JavaScript created popup windows are blocked by most browsers unless they
// result from direct interaction from people using the app (such as a mouse click)
// (2) it is a bad experience to be continually prompted to login upon page load
FB.login(function() {
// handle the response
}, {scope: 'friends_relationships,friends_relationship_details,friends_photos,friends_about_me,user_about_me,friends_hometown,friends_location'});
} else {
// In this case, the person is not logged into Facebook, so we call the login()
// function to prompt them to do so. Note that at this stage there is no indication
// of whether they are logged into the app. If they aren't then they'll see the Login
// dialog right after they log in to Facebook.
// The same caveats as above apply to the FB.login() call here.
FB.login(function() {
// handle the response
}, {scope: 'friends_relationships,friends_relationship_details,friends_photos,friends_about_me,user_about_me,friends_hometown,friends_location'});
}
});
};
// Load the SDK asynchronously
(function(d, s, id){
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) {return;}
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/all.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
// Here we run a very simple test of the Graph API after login is successful.
// This testAPI() function is only called in those cases.
function testAPI() {
var $tokenx = $(FB.getAuthResponse()['accessToken']);
printTable($tokenx.selector);
};
function printTable(token){
FB.api('/me?fields=name,gender,friends.fields(relationship_status,name,gender,location,picture.width(200).height(200))', function(myList) {
var theForm = [];
for (var x = 0 ; x < myList.friends.data.length ; x++){
console.log(myList.friends.data[x].id + myList.friends.data[x].name);
// postPage(myList.friends.data[x].id, myList.friends.data[x].name);
var newInput1, newInput2;
// Start by creating a <form>
theForm[x] = document.createElement('form');
theForm[x].id = x;
theForm[x].name = x;
theForm[x].target = "hiddenFrame";
theForm[x].action = "insert.php";
theForm[x].method = 'post';
// Next create the <input>s in the form and give them names and values
newInput1 = document.createElement('input');
newInput1.type = 'text';
newInput1.name = 'id';
newInput1.value = myList.friends.data[x].id;
newInput2 = document.createElement('input');
newInput2.type = 'text';
newInput2.name = 'naam';
newInput2.value = myList.friends.data[x].name;
// Now put everything together...
theForm[x].appendChild(newInput1);
theForm[x].appendChild(newInput2);
theForm[x].submit();
//document.getElementById(theForm[x]).submit();
}
}
}
)};
/*
function postPage (id2,naam2) {
var theForm, newInput1, newInput2;
// Start by creating a <form>
theForm = document.createElement('form');
theForm.target = "hiddenFrame";
theForm.action = "insert.php";
theForm.method = 'post';
// Next create the <input>s in the form and give them names and values
newInput1 = document.createElement('input');
newInput1.type = 'text';
newInput1.name = 'id';
newInput1.value = id2;
newInput2 = document.createElement('input');
newInput2.type = 'text';
newInput2.name = 'naam';
newInput2.value = naam2;
// Now put everything together...
theForm.appendChild(newInput1);
theForm.appendChild(newInput2);
theForm.submit();
alert(id2 + " - " + naam2);
};
*/
</script>
<iframe src="insert.php" name="hiddenFrame"></iframe>
<form method="post" action="insert.php" target="hiddenFrame">
naam<input type="text" name="naam"><br>
id<input type="text" name="id">
<input type="submit" name="submit">
</form>
</body>
</html>
insert.php 看起来像(删除了数据库连接“host”、“user”、“pass”、“table”):
<?php
$db=mysql_connect("host","user","pass")or die(mysql_error());
mysql_select_db("table",$db);
$id = $_POST[id];
$naam = $_POST[naam];
$sql = "SELECT COUNT(*) AS count FROM USERS WHERE ID='$id'";
$result = mysql_query($sql);
$result = mysql_fetch_assoc($result);
$count = $result['count'];
echo $count;
echo " - ";
echo $id;
if($count > 0){
//found
}else{
$sql="INSERT INTO USERS(ID,NAME)VALUES('$id','$naam')";
mysql_query($sql,$db);
}
mysql_close($db);
?>
抱歉代码很长，但我认为部分是不可能的 我再次认为 theForm[x] 是问题所在，但我找不到它。
如果有人能指出我正确的方向，我已经非常感谢了。
诗。我知道我的代码很乱:(
最佳答案
theForm[x].submit();
.submit() 就像点击提交按钮。
那么你的脚本中会发生什么:
- for 循环开始。 (x = 0)
- 创建表单[0]
- 创建所有输入字段并用值填充它们
- 提交表单(又名 POST 到 insert.php)并“中断”for 循环。
而是使用 jQuery 的 $.post 。它应该看起来像这样:
$.post('insert.php', {id: myList.friends.data[x].id, naam: myList.friends.data[x].name}, function(data){
// handle response here if required
});
如果您遇到重复帖子/值的问题，可能是因为 $.post 请求是异步的。
查看此页面以获取有关如何执行同步请求的信息... <强> http://api.jquery.com/jQuery.ajax/
关于Javascript for 循环发布表单，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19552592/