LED napájací zdroj 300W 12V IP67

const vykonZdroj = 300; // Tu zadajte výkon zdroja priamo do kódu function startCalc() { var strip = document.usetreni.strip.value; if (vykonZdroj && strip) { var maxDlzka = vykonZdroj / strip; var recomLength = maxDlzka * 0.8; document.getElementById('maxdlzka').innerText = maxDlzka.toFixed(2); document.getElementById('recomLength').innerText = recomLength.toFixed(2); } else { document.getElementById('maxdlzka').innerText = "0"; document.getElementById('recomLength').innerText = "0"; } } // Function to adjust the width of the select element function adjustWidth() { var select = document.getElementById("strip"); select.style.width = "auto"; // Reset the width so that scrollWidth returns the correct value var width = select.scrollWidth; select.style.width = (width * 1.1) + "px"; // Increase width by 10% } // Adjust the width on load window.onload = function() { adjustWidth(); startCalc(); }; // Adjust the width on change document.getElementById("strip").onchange = function() { adjustWidth(); startCalc(); };