Jquery $ .post方法不起作用[关闭]

Question

Background: I'm using Apache with XAMPP to set up localhost. I'm relatively new to programming, and very new to PHP. I'm trying to call a PHP file in the same directory as my Javascript file, but the code I'm using doesn't seem to work. Here's a sample:

Javascript:

function SendPhps(){
var point = 2;'
$.post('json.php',point);}
$(document).ready(function(){
SendPhps();
});

PHP:

<?php
if(!empty($_POST)){
file_put_contents('example.txt','Itworks');
}
?>

EDIT: Ok, I've revised my scripts to be more simple, but opening my page still doesn't trigger any alert box:

PHP:

<?php
    if (empty($_POST))
        echo "empty";
    else
        echo "not empty";
?>

Javascript:

$(document).ready(function() {
    var point = {'param':2};
    $.post(
        'json.php', 
        point, 
        function(data){
            alert(data);
        }
    );
});

Answer 1

Your var point needs to have a more meaningful structure than that. What does '2' mean to a post? Nothing really. Give it a name. i.e.

     var point = {'html':2};

and since you're just learning, don't try to do multiple things at once like writing to a file. Keep it simple. Just have your PHP echo your result.

Here is an example on jsfiddle using their 'echo/html' URL - which simply echos out whatever value you set to the 'html' parameters.

http://jsfiddle.net/k5ygv/