如何转换此JSON以使用jQuery.ajax在HTML中显示以及为什么0结尾？

PHP end of process looks like following:

$output = array(
            'inputUrl' => 'some_value',
            'title' => 'some_value',
            'slug' => 'some_value',
        );
echo json_encode( $output );

I get response like:

{"inputUrl":"some_value","title":"some_value","slug":"some_value"}0

AJAX is like:

jQuery.post(
    "ajax.php",
    { 'action': 'store', 'url': url },
    function(data) { alert(data); }
);

I have 2 questions:

1. Why that 0 comes up in the end of response?
2. I tried JSON.parse(response); but not working. How to part elements of the response array in jQuery?

Question 1 is solved by using die() after the echo or wp_die() in WordPress.

Can someone help me with Question 2?

Use wp_die(); at the end of the code to avoid 0 at the end in response.

$output = array(
            'inputUrl' => 'some_value',
            'title' => 'some_value',
            'slug' => 'some_value',
        );
echo json_encode( $output );
wp_die(); 

When the 0 is gone JSON.parse(response) creates a data object.

Individual elements can be accessed like response.inputUrl