使用jquery和ajax访问同一页面上的php值
[英]Access the php value on the same page using jquery and ajax
问题描述
i am trying to echo the value entered by the user in the input tag using jquery and ajax . 
我试图回显用户使用jquery和ajax在输入标签中输入的值。 the following is my code 以下是我的代码
< script src = "//code.jquery.com/jquery-1.11.0.min.js" > < /script> < script type = "text/JavaScript" > function showMessage() { var message = document.getElementById("message").value; $.ajax({ url: 'value_pass.php', type: 'GET', data: { var_PHP_data: message }, success: function(data) { alert("success"); }, error: function(XMLHttpRequest, textStatus, errorThrown) { //case error } }); } < /script>
<!DOCTYPE html> <html> <head> </head> <body> Enter message: <input type="text" id="message"> <input type="submit" onclick="showMessage()" value="submit" /> <?php echo "hi".$_GET['var_PHP_data'];?> </body> </html>
My php script is: 我的PHP脚本是：
<?php
echo "hi".$_GET['var_PHP_data'];
?>
the code alert the success prompt , but i am not able to access the value using GET , any pointers on what i am doing wrong. 该代码警告成功提示，但是我无法使用GET访问该值，这是我做错任何事情的指针。
2 个解决方案
解决方案1
0 2017-11-13 06:42:51
If you are doing this on same page add your php script at the top of the page that handle your ajax request 如果您在同一页面上执行此操作，请在页面顶部添加用于处理ajax请求的php脚本
Like this 像这样
<?php if(isset($_GET['var_PHP_data'])){
echo "hi".$_GET['var_PHP_data'];
die;
}?>
<!-- rest of your html code start from here -->
<!DOCTYPE html>
<html>
<head>
</head>
<body>
Enter message: <input type="text" id="message">
<input type="submit" onclick="showMessage()" value="submit" />
</body>
</html>
解决方案2
0 2017-11-13 06:44:00
If you using ajax, follow below code 如果使用ajax，请遵循以下代码
<!DOCTYPE html>
<html>
<head>
</head>
<body>
Enter message: <input type="text" id="message">
<input type="submit" onclick="showMessage()" value="submit" />
<span id = 'PHP_data'></span>
</body>
</html>
<script src = "//code.jquery.com/jquery-1.11.0.min.js" > < /script>
<script type = "text/JavaScript" >
function showMessage() {
var message = document.getElementById("message").value;
$.ajax({
url: 'value_pass.php',
type: 'GET',
data: {
var_PHP_data: message
},
success: function(data) {
message1 = "Hi "+message
$('#PHP_data').html(message1);
alert("success");
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
//case error
}
});
}
</script>
If you are using form submit use below code 如果您使用表单提交，请使用以下代码
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<form action="<?php echo $_SERVER['PHP_SELF'] ?>" method ='GET'>
Enter message: <input type="text" id="message" name = "message">
<input type="submit" value="submit" />
<?php if(isset($_GET['message'])){
echo "hi".$_GET['message'];
die;
} ?>
</form>
</body>
</html>
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.