将div id传递给PHP变量

Question

I have passed a javascript variable into a div id element in HTML. 我已经将JavaScript变量传递到HTML中的div id元素中。 I am now trying to send that div id to a php variable so I can access it. 我现在正在尝试将该div ID发送到php变量，以便我可以访问它。

However, when I try a POST request it is not grabbing what is assigned to div id. 但是，当我尝试POST请求时，它没有获取分配给div id的内容。 Any help is appreciated, thanks. 任何帮助表示赞赏，谢谢。

<?php 

session_start();

$un = $_POST["result"];
echo "the username is". $un;

?>

<!DOCTYPE html>
<html>
<body>

<div id="result"></div>



<script>
if (typeof(Storage) !== "undefined") 
{
    var getUser = document.getElementById("result").innerHTML = sessionStorage.getItem("username");
} 
else 
{
    document.getElementById("result").innerHTML = "Sorry, your browser does not support Web Storage...";
}

</script>

</body>
</html>

Answer 1

First of all, to make a post request you'll need to be using XMLHttpRequest . 首先，要发出发布请求，您将需要使用XMLHttpRequest 。 You really should be using a GET request in a separate file, though. 不过，您确实应该在单独的文件中使用GET请求。

PHP file, named getId.php : PHP文件，名为getId.php ：

<?php
    session_start();
    $_SESSION["id"] = $_GET["id"];
?>

JavaScript code, to retrieve data: JavaScript代码，以检索数据：

var getData = function( url, callback ) {
    var xhr = new XMLHttpRequest();
    xhr.onload = function() {
        callback(xhr);
    };

    xhr.open( "get", url, true );
    xhr.send();
};

getData('./getId.php?id=' + /* id goes here */, function(json){
    if(json.status == 200){
        data = json.response;
        //Do something with data...
    }
})

And finally, to reference the session data, back in the HTML file: 最后，要引用会话数据，请返回HTML文件：

<?php
    session_start();
    echo "value of username is: " . $_SESSION["id"];
?>

将div id传递给PHP变量

问题描述

1 个解决方案

解决方案1
0 2017-10-23 21:16:09

将div id传递给PHP变量

问题描述

1 个解决方案

解决方案1 0 2017-10-23 21:16:09

解决方案1
0 2017-10-23 21:16:09