如何使用ajax在其他.php文件上传递此变量

Question

I want to pass the id in posts.php with ajax and here in href i want to put "#".

When this link gets clicked, It goes to that link. But I dont want to go that link and at a same time i need to pass the id in posts.php.

How can I do this?

<li><a href="posts.php?id=<?=$post_id?>" >post</a></li>

Answer 1

Could do something like this:

HTML :

<li><button type="button" id="pass-data" data-postid="<?= $post_id; ?>">Click me</button></li>

jQuery :

$("#pass-data").click(function(){ // on button click
    var dataid = $(this).attr("data-postid"); // get post id

    $.ajax({
        method: "POST",
        url: "posts.php", // page to post data to
        data: { id: dataid }, // the post_id (you can access it with $_POST["id"])
        success: function(){ // if successful
            alert("Success!"); // alert "success!"
        }
    });
});

Answer 2

Like this - note the preventDefault that stops the link:

<li><a class="postLink" href="posts.php?id=<?=$post_id?>" >post</a></li>

$(function() {
  $(".postLink").on("click",function(e) {
    e.preventDefault(); // cancel link
    $.post(this.href,function(data) {
      console.log("Posted the link, returned:",data);
    });
  });
});

OR

<li><a class="postLink" href="#" data-id="<?=$post_id?>">post</a></li>

$(function() {
  $(".postLink").on("click",function(e) {
    e.preventDefault(); // cancel link
    $.post("posts.php",{"id":$(this).data("id")},function(data) {
      console.log("Posted the link, returned:",data);
    });
  });
});