varlist;
document.getElementById('f_tag').addEventListener('keydown', () => {

    vartx = String(document.getElementById('f_tag').value).toLocaleLowerCase().split(' ') list = [];
    tx.forEach(es => {
        letiz = 0;
        tx.forEach(el => {

            if (es == el && el != '' && el != ' ') {
                if (iz == 0) {
                    iz++
                } else {
                    list.push(es)
                }

                returnfalse;
            }
        });
    });
    console.log(list) if (list.length == 0) {
        document.getElementById('f_tag').style.color = 'green'
    } else {

        document.getElementById('f_tag').style.color = 'red'
    }
})