按键上的AJAX？

Question

So i'm a completely rookie at AJAX so I was wondering if someone could help.

I'd like to get this, SQL command to be activated onkeyup:

SELECT * FROM commands WHERE tag=$_POST['search_input']

This is the current code I have for the form:

<form method="post">
    <input class="search_input" type="text" name="search_input" placeholder="Search..." onkeyup="suggest()" autocomplete="off"  />
</form>

Current jQuery:

$(document).ready(function() {
    $('.search_input').keypress(function(event) {
        if (event.keyCode == 13) {
            event.preventDefault();
        }
    });
    function handleKeyPress(e,form){
        var key=e.keyCode || e.which;
        if (key==13){
            form.submit();
            return false;
        }
    }
});

the function suggest() is what I'd like your guy's help on. To send the command above on a keypress.

Answer 1

Use $.post(). You have here examples http://api.jquery.com/jquery.post/

The basic structure is

$.post(url(string), data(object), function(response){ /* do something */ });

A delay between inputs would be really good so it won't continuously send requests to the server. You may also want to use keyup instead of keypress, test it and you'll see why.