For example use js input value with oninput

let str = phrase.value.split(``)
for (let index = 0; index < str.length; index++) {
    // Add any way arabic diacretic sumbul fatha for example
    str[index] = str[index] + `َ`;
    
}

let str2 = str.join(``)

str2 for SQL query, I use this