dongyiyu882684 2018-09-18 16:28
浏览 84

将javascript变量从work.php页面传递到index.php页面的具体问题

Hey guys I have this page work.php with html and javascript codes and the form refers to index.php page. Also I am trying to pass the variable counter from my javascript to the index.php page. It's not working at all. Can you please have a look? I can't seem to figure out the issue.

<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<form method="post" action="index.php" enctype="multipart/form-data">
<div id=parent_div>
<button  type="button" id="add_step" > Add step!</button>

<input type='submit' name='submit'>
<br/>
</form>
</div>
</body>
</html>
<script>


$(document).ready(function(e){


var counter=2;
function send_counter(counter) {
    $.ajax({
      url   : "index.php", 
      type  : "POST",
      cache : false,
      data  : {
        counter : counter
      }
    });
  }
});
</script>

And here is my index.php page:

<?php



if (isset($_POST['submit'])){
$counter=$_POST['counter'];
echo "$counter";

}
?>
  • 写回答

1条回答 默认 最新

  • dszsajhd237437 2018-09-18 16:37
    关注

    You are only passing the variables you mention in the data parameter

    function send_counter(counter) {
    $.ajax({
      url   : "index.php", 
      type  : "POST",
      cache : false,
      data  : { counter : counter }
    });
  }
});

    So only counter so $_POST will only contain that one array occurance, $_POST['counter'].

    So change the PHP to look for that 

    <?php
if (isset($_POST['counter'])){
    $counter=$_POST['counter'];
    echo "$counter";
}
?>

    Or you could add a submit to the data object.

    function send_counter(counter) {
    $.ajax({
      url   : "index.php", 
      type  : "POST",
      cache : false,
      data  : { counter : counter, submit: 1 }
    });
  }
});

    and change the PHP back to

    <?php
if (isset($_POST['submit'])){
    $counter=$_POST['counter'];
    echo "$counter";
}
?>
    评论

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