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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>CB Toplota - izračun delitve</title>
</head>
<body>
<label>Strošek% Naselje:</label> <input type="number" id="cb1" min="0" max="100"> %<br>
<label>Strošek% Blok:</label> <input type="number" id="blok" min="0" max="100"> %<br>
<!--<label>Delitev za ogrevanje:</label> <input type="number" id="del_o" min="0" max="100"> %<br>-->
<label>Delitev za toplo vodo:</label> <input type="number" id="del_tv" min="0" max="100"> %<br>
<label>Strošek% ogrevanje:</label> <input type="number" id="str_o" min="0" max="100"> %<br>
<label>Strošek% topla voda:</label> <input type="number" id="str_tv" min="0" max="100"> %<br>
<span>Delež variabilnih stroškov na računu: </span><span id="delez" min="0" max="100"></span><br>
<button type="button" onclick="calculate()">Izračunaj</button>
</body>
<script>
function calculate(){
var cb1 = parseFloat(document.getElementById("cb1").value);
var blok = parseFloat(document.getElementById("blok").value);
var del_tv = parseFloat(document.getElementById("del_tv").value);
//var del_o = parseFloat(document.getElementById("del_o").value);
var del_o = 100 - del_tv;
var str_o = 0;
if(del_o > 0){
str_o = parseFloat(document.getElementById("str_o").value);
}
var str_tv = parseFloat(document.getElementById("str_tv").value);
var res = (cb1 / 100) * (blok / 100) * ((str_o/100) * (del_o/100) + (str_tv/100) * (del_tv/100));
res = res * 100;
document.getElementById("delez").innerHTML = res + " %";
}
</script>
</html>