Post title not saving

Question

I have some custom JavaScript on the admin side, on for counting the posts, the other for checking if a checkbox have been ticked.

$('.inside input').on('click', function() { 
        if ($(this).is(':checked')) {
        console.log('checked');
            $('#title').val('overview');
        } else {
            $('#title').val(title);
        }
    });

the other one

$('#postexcerpt').find('textarea').on('keyup', function(e) {

        max_chars = 240 - $(this).val().length;
        if (max_chars < 1) {

            $(this).val($(this).val().substr(0,238));
        }
        $('#counterbox').html(max_chars);

    });

The codes above are working. My problem is when I save the post, CPT or any other post type the Title field does not get saved? Any ideas on this?

Update - Saving CPT

add_action('save_post','save_press_meta');

function save_press_meta() { global $post; $post_id = $post->ID;

if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;

    if( isset( $_POST['paper'] ) )  
    update_post_meta( $post_id, 'paper',$_POST['paper']);

    if( isset( $_POST['press_article_thumbnail'] ) )  
    update_post_meta( $post_id, 'articlethumbnail',$_POST['press_article_thumbnail']);

    if( isset( $_POST['press_article_content'] ) )  
    update_post_meta( $post_id, 'articlecontent',$_POST['press_article_content']);      

    if( isset( $_POST['press_article_pubtime'] ) )  
    update_post_meta( $post_id, 'articlepubtime',$_POST['press_article_pubtime']);      

}

Answer 1

I think the problem lies here,

 $('.inside input').on('click', function() { 
    if ($(this).is(':checked')) {

            $('#title').val('overview');
        } else {
            $('#title').val(title);
        }
    }); 

".inside input" in your javascript code is checkbox?
If yes then, it will also apply to publish button. So when you click publish button,above js will be called and will change the title.
Use some id or specific class other than ".inside".