I want to generate random numbers between 2 values that sums up to N.
What I've done so far :
function randomNumbers() {
let i, nb, min, max, totAtteindre, tot, ajout;
let resultat = new (Array);
let alea = [];
nb = document.getElementById("nbjours").value;
totAtteindre = document.getElementById("total").value;
min = Math.ceil(document.getElementById("minimum").value);
max = Math.floor(document.getElementById("maximum").value);
tot = 0;
for (i = 0; i < nb ; i++)
{
alea[i] = Math.random() * (max - min) + min;
alea[i] = alea[i].toFixed(2);
alea[i] = parseFloat(alea[i]);
tot += alea[i];
}
tot = parseFloat(tot);
if (totAtteindre > tot)
{
ajout = (totAtteindre - tot) / nb;
ajout = ajout.toFixed(2);
ajout = parseFloat(ajout);
for (i = 0; i < nb ; i++)
{
alea[i] += ajout;
tot += ajout;
}
}
else
{
ajout = (tot - totAtteindre) / nb ;
ajout = ajout.toFixed(2);
ajout = parseFloat(ajout);
for (i = 0; i < nb ; i++)
{
alea[i] -= ajout;
tot -= ajout;
}
}
let tmp = totAtteindre - tot;
tot += tmp;
alea[0] += tmp;
// Affichage en vert ou rouge pour les valeurs positives ou négatives
for (i = 0; i < nb ; i++)
{
if ((alea[i] > min) && (alea[i] < max))
{
resultat += alea[i].toFixed(2).replace('.', ',').fontcolor("green");
if (i < nb-1)
{
resultat += "<br>";
}
}
else
{
resultat += alea[i].toFixed(2).replace('.', ',').fontcolor("red");
if (i < nb-1)
{
resultat += "<br>";
}
}
}
document.getElementById("valeurs").innerHTML = resultat;
document.getElementById("totalAp").innerHTML = tot.toFixed(2);
}<body>
<main>
<header>
<h1 style="font-size: 40px; text-align: center; margin: 20px; border: solid 2px black; font-family: 'Big Caslon'"><strong>Générateur de valeurs aléatoires</strong></h1>
</header>
<section>
<form style="display: block; margin: 20px; text-align: center;">
<h1 style="margin-bottom: 50px; font-family: 'Big Caslon';" ><u>Veuillez saisir le nombre de valeurs, les bornes inférieures/supérieures approximatives et le montant à atteindre</u><br></h1>
<fieldset>
<legend><strong>Nombre de valeurs</strong></legend>
<input id="nbjours" type="number" name ="nbj">
</fieldset>
<br>
<fieldset>
<legend><strong>Bornes journalières approximatives</strong></legend>
<input id="minimum" type="number" name="mont1">
<input id="maximum" type="number" name="mont2">
<div class="help-tip">
<p style="text-align: justify; font-size: smaller">Il est possible d'avoir un résultat dont les valeurs dépassent les bornes. <br>Dans ce cas-là, diminuez les bornes ou augmentez les.</p>
</div>
</fieldset>
<br>
<fieldset>
<legend><strong>Montant à atteindre</strong></legend>
<input id="total" type="number" name="to">
</fieldset>
</form>
<div style="display: flex; justify-content: center; margin: 20px;">
<button onclick="randomNumbers()" class="myButton">Générer</button>
</div>
</section>
<section style="display: block; text-align: center; margin-top: 10px; width: 50%; margin-left: auto; margin-right: auto">
<fieldset>
<legend style="background-color: unset;">
<button onclick="copyText('valeurs')">
Copier les valeurs
</button>
<br>
</legend>
<div id="valeurs" ></div>
</fieldset>
</section>
<section style="text-align: center; margin: 10px; width: 30%; display: block; margin-left: auto; margin-right: auto">
<fieldset>
<legend style="background-color: firebrick"><strong>Total</strong></legend>
<div id="totalAp"></div>
</fieldset>
</section>
</main>
</body>
</html>As you can see, sometimes you get values under the min or max. Because I add the total remaining divided by the number of values and add them to each of the values.
I don't know if there exists a way to only get values between the two ranges (minimum and maximum) strictly with like a method or else. I could maybe do if statements to not add the added value to those that would surpass the min/max values and divide more. But I tried and I would still get one or two not being strictly in the range.
I'm pretty new to JavaScript (and web in general).
Thanks for your time !
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