使用PHP，AJAX中的jQuery / JavaScript隐藏父ID

Question

Okay, I'm calling a PHP using Ajax for a file upload.

else if (in_array($file_extn, $allowed)=== false){
            echo '<script type = "text/javascript">window.alert("The only file types allowed are .jpg, .gif, .png");</script>';
            echo '<script type = "text/javascript">$(document).ready(function(){$.parent("#loadimg").fadeOut();});</script>';
        }

The alert works no problem but the second echo isn't working. It is not fadingOut the ID. What is the problem?

Answer 1

You need a selector to tell jQuery what to get the parent() of.

$(document).ready(function() {
    $(".childElement").parent("#loadimg").fadeOut();
});

See: http://api.jquery.com/parent/

Note the first line of the first paragraph, "Given a jQuery object that represents a set of DOM elements..."

If you're trying to fade out #loadimg, then try this:

$(document).ready(function() {
    $("#loadimg").fadeOut();
});

And if you're trying to fade the parent of #loadimg:

$(document).ready(function() {
    $("#loadimg").parent().fadeOut();
});