Create Error Handling for existing PHP application

Job ID: 37737146

Budget: $30 – $250 USD

*** PLEASE DO NOT ASK "WHAT IS YOUR BUDGET". YOUR BID AMOUNT SHOULD BE THE AMOUNT YOU INTEND TO DO THE WORK FOR ***

*** DATABASE AND PHP FILES ARE ATTACHED ***

We have A PHP application with a drop down (Item Number) to select items to print. We would like to add some JavaScript on the page to do two things when the selected or entered value does not match an available item in the list.

1. Display a warning on the page (prefer this to be directly above the data entry area)
2. Disable the "Submit" button

Once a value is entered that matches a value in the drop down, the warning message will go away and the submit button will be enabled.
Related categories: PHP JavaScript AJAX jQuery / Prototype