var listOf = 'STRING OF LONG TEXTS';
var newAr = listOf.toLowerCase().replace('.','').replace('?','').replace(',','').split(' ');
function renderWords ( data ) {
    var unique = [];
    if ( !Array.isArray(data) || data.length === 0 ){
        return HTML;
    }
    for ( var i=0; i<data.length; i++ ) {
        if ( unique.indexOf( data[i] ) === -1 ){

            unique.push(data[i]);
            console.log(unique);
        }
    }
}