... di aver ben capito:
Fammi sapere !codice:<form> Prezzi 1 <select name="prezzi1" onChange="document.getElementById('risultato').innerHTML=parseInt(this[this.selectedIndex].value)+parseInt(this.form.prezzi2[this.form.prezzi2.selectedIndex].value);"> <option value="50">50</option> <option value="150">150</option> <option value="200">200</option> </select> Prezzi 2 <select name="prezzi2" onChange="document.getElementById('risultato').innerHTML=parseInt(this[this.selectedIndex].value)+parseInt(this.form.prezzi1[this.form.prezzi1.selectedIndex].value);"> <option value="250">250</option> <option value="300">300</option> <option value="350">350</option> </select> Risultato: <div id="risultato"></div> </form>![]()

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