从外部php文件返回值以在jQuery中使用

Question

So I have an input of type text that the user can enter text into, and when they post the text I'm using jQuery's prepend method to post it onto the screen, but before I let the text publish, I want it to go through some validation in an external PHP file, but I'm not having much luck on achieving this.

jQuery is sending a POST to the php file and I have a variable with the sanitized text in the php file that's ready to go - I'm just not sure how to return the value (preferably in a good way) back to jQuery.

Here is the POST:

$.post('ajaxPost.php', {'message' : msg}, function(){

    $('.messages').prepend(msg + '<br>');

});

Thanks for any help!

Answer 1

You can do that in this way:

$.post('ajaxPost.php', {'message' : msg}, function(data){
    $('.messages').prepend(data + '<br>');
});

And in your ajaxPost.php you have to return your text you want to display. You can just simply echo it like echo $sanitized_message; .

Answer 2

you can echo the resposne in your external php script and use get instead of post

$.get('ajaxPost.php?message='+msg, function( data ) {
   $( ".someDiv" ).html( data );
   alert( "Load was performed." );
});

you might need to url_encode the message before