Instructions/Rules Inside Text Area

Question

I know it is possible to change the "Enter Title Here". But is there’s a function to add text (“how to...”, “simple rules to post...”) inside the post text/input area! Any help?

Answer 1

You can use Qtip to write your how to...”, simple rules to post..." and it will show on hover for each element

$("jqueryselector").qtip({
   content: 'I\'m at the top right of my target',
   position: {
      corner: {
         target: 'topRight',
         tooltip: 'bottomLeft'
      }
   }
})

Update:

even simpler you can use "Jquery Form Field Default Value plugin"

Demo

Usage:

$("#myfield").DefaultValue("My Default Value..");

Answer 2

Add some custom javascript to the admin area, using wp_enqueue_script().

$(document).ready(function() {
    $('#input-id').attr('placeholder', 'Did you try Google first?');
});

The placeholder attribute does not work in Internet Explorer yet. You could fall back on a jQuery placeholder plugin if needed.