How to implement copying from input to input with transliteration?

Good time of day.
How to duplicate a value in the input I understand how to dynamically do the transliteration?
There is a form
the <tr>
 <td class="name_section">Name</td>
 <td><span class="icon_asterisk">&#9913;</span><label><input name="customer_firstname_locale" type="text" placeholder="John" /></label></td>
the <tr>
 <td class="name_section">last Name</td>
 <td><span class="icon_asterisk">&#9913;</span><label><input name="customer_lastname_locale" type="text" placeholder="Ivanov" /></label></td>
the <tr>
 <td class="name_section">Name (EN)</td>
 <td><span class="icon_asterisk">&#9913;</span><label><input name="customer_firstname" type="text" placeholder="Ivan" /></label></td>
the <tr>
 <td class="name_section">Name (EN)</td>
 <td><span class="icon_asterisk">&#9913;</span><label><input name="customer_lastname" type="text" placeholder="username" /></label></td>

Help to get on the right path
March 23rd 20 at 18:40
1 answer
March 23rd 20 at 18:42
Or you can write your interpreter.
Or, as I understand you need the transliteration, then write a function for transliteration or skopipastit somewhere, in the Internet a lot.
And if you need a engine for translations, then use someone else's API. For Example, Google

Function unilateral transliteration, reverse transliteration do the same.
I humbly Thank you for your answer!
I went through the nose on an Internet and found this script.
He copies a string and converts on the fly. Can someone not be a need quickly to babakot.
THANK YOU VERY MUCH!!!!!! - Clyde.Watsica commented on March 23rd 20 at 18:45

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