JSFiddle - React, Tailwind, and code Playground

by orlenko

HTML

<input>

JavaScript

$('input').keypress(function(e){
    var that = $(this);
    var parts = that.val().split('a');
    if (parts.length > 2) {
        parts.splice(1, 0, 'a');
        that.val(parts.join(''));
    } else {
        // no need to replace
    }    
})