我有以下代码。目前它只提交 first_name 这正是我想要的，并且它在不刷新页面的情况下即时执行。
但是我需要通过隐藏的 id 字段在同一个 ajax 请求中解析一个 ID 号。
任何人都可以提出任何想法来帮助我吗？
提前致谢
代码:
<html>
<head>
<script>
function ajax_post(){
// Create our XMLHttpRequest object
var hr = new XMLHttpRequest();
// Create some variables we need to send to our PHP file
var url = "my_parse_file.php";
var fn = document.getElementById("first_name").value;
var vars = "firstname="+fn+;
hr.open("POST", url, true);
// Set content type header information for sending url encoded variables in the request
hr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
// Access the onreadystatechange event for the XMLHttpRequest object
hr.onreadystatechange = function() {
if(hr.readyState == 4 && hr.status == 200) {
var return_data = hr.responseText;
document.getElementById("status").innerHTML = return_data;
}
}
// Send the data to PHP now... and wait for response to update the status div
hr.send(vars); // Actually execute the request
document.getElementById("status").innerHTML = "processing...";
}
</script>
</head>
<body>
<h2>Ajax Post to PHP and Get Return Data</h2>
<input type="hidden" name="my_id" value="1234">
First Name: <input id="first_name" name="first_name" type="text" onkeyup="ajax_post();"> <br><br>
<div id="status"></div>
</body>
</html>
最佳答案
使用jquery
<!DOCTYPE html>
<html>
<head>
<title>TITLE</title>
<script src="https://code.jquery.com/jquery-3.1.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
function ajax_post(){
var $elementStatus = $('#status');
$elementStatus.html('processing...');
var url = 'my_parse_file.php';
var data = { firstname : $('#first_name').val() };
var success = function(responseText, textStatus, jqXHR) {
if(jqXHR.status != 200)
return;
$elementStatus.html(responseText);
};
$.post(url, data, success);
};
</script>
</head>
<body>
<h2>Ajax Post to PHP and Get Return Data</h2>
<input type="hidden" name="my_id" value="1234">
First Name: <input id="first_name" name="first_name" type="text" onkeyup="ajax_post();"> <br><br>
<div id="status"></div>
</body>
</html>关于php - Keyup AJAX/PHP/MYSQL 上的帖子 ID，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42394971/