Javascript Input Text Change Delay Timeout

let timeout = null$("#text-input").on('input', function() {    const val = $(this).val()    let delay = 300    const len = val.length    if (len == 0) {      return    }    else if (len == 1) {      delay = 1000    }    else if (len <= 3) {      delay = 700    }    else if (len <= 5) {      delay = 500    }    clearTimeout(timeout)    timeout = setTimeout(() => {        // do something    }, delay)})