通过Javascript传递变量

Question

How can I pass a variable ( $member_id ) to the target php page(Member Profile details Query)?

///-----



 echo '<div id="show_profile_box">Show Member Profile details 
        //MySQL Query to display member profile details</div>

    <div id="display_member_id"><a href="show_profile.php"?member_id=$member_id">Display Member id</a></div>';

echo '<script>
    $("#show_profile_box").hide(100);
    $("#display_member_id").click(function () { 
        $("#show_profile_box").show(500); 
    });
    </script>';

Thank you. Let me know if you need more info.

* The whole idea is to display/show SELECTED member profile details. *

Answer 1

You are using single quotes. Single quotes do not parse PHP variables. When outputting multiline HTML from PHP, use heredoc :

echo <<< END_OF_HTML
<div id="show_profile_box">Show Member Profile details 
   <!--MySQL Query to display member profile details -->
</div>

<div id="display_member_id">
   <a href="show_profile.php?member_id={$member_id}">Display Member id</a>
</div>

<script>
    $("#show_profile_box").hide(100);
    $("#display_member_id").click(function () { 
        $("#show_profile_box").show(500); 
    });
</script>
END_OF_HTML;

Also, note that the variable do not have to be enclosed by {} but still a good practice to do so.

This will create a link like " show_profile.php?member_id=3 " that, if you click on the link, will call the script with the $_GET['member_id'] = 3 . You can even get the page content via a XHR call inside your click event :

$.get($(this).attr('href'), function(data) { /* process data here */ });

Answer 2

You've added a querystring key/value for member_id so you can access the $.GET variable on your PHP page to retrieve the member_id as such:

$member_id = $.GET["member_id"];

Example of the AJAX functionality you're looking for:

$.GET("show_profile.php?member_id=<your_member_id>", null, function(data){
    $("#show_profile_box").html(data);
});

Answer 3

Do you mean something like

<script type="text/javascript">
var member_id = <?= $member_id ?>;
</script>

?

Answer 4

If I am getting you correctly, you need to do this in php:

echo '<script type="text/javascript">memberID =' . $memberID . ';></script>;

I assume that you want to do this on some specific action like click so you specify a js function in the onlick handler which takes the value of the global JS variable memberID and makes an AJAX call to your other page.