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| <!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="UTF-8">
<title></title>
<style>
th,td{border:1px solid;width:10%;text-align:center}
th{background:lime}
</style>
</head>
<body>
<table>
<thead>
<tr><th>Colonne 1</th><th>Colonne 2</th><th>Colonne 3</th><th>Colonne 4</th><th>Colonne 5</th></tr>
</thead>
<tbody id="tb">
<tr><td>C1 - L1</td><td></td><td>C3 - L1</td><td>C4 - L1</td><td>C5 - L1</td></tr>
<tr><td>C1 - L2</td><td></td><td>C3 - L2</td><td>C4 - L2</td><td>C5 - L2</td></tr>
<tr><td>C1 - L3</td><td>C2 - L3</td><td>C3 - L3</td><td>C4 - L3</td><td>C5 - L3</td></tr>
<tr><td></td><td>C2 - L4</td><td></td><td>C4 - L4</td><td>C5 - L4</td></tr>
<tr><td></td><td>C2 - L5</td><td>C3 - L5</td><td>C4 - L5</td><td>C5 - L5</td></tr>
<tr><td>C1 - L6</td><td></td><td>C3 - L6</td><td>C4 - L6</td><td>C5 - L6</td></tr>
<tr><td>C1 - L7</td><td>C2 - L7</td><td>C3 - L7</td><td>C4 - L7</td><td>C5 - L7</td></tr>
<tr><td>C1 - L8</td><td>C2 - L8</td><td>C3 - L8</td><td>C4 - L8</td><td>C5 - L8</td></tr>
</tbody>
</table>
<button id="go">compacter</button>
<script>
document.querySelector("#go").addEventListener("click",()=>{
const tb=document.querySelectorAll("#tb>tr>td");
const tr=document.querySelector("#tb>tr").cells.length;
const tab=[];
tb.forEach((v,i)=>{
if(!tab[i%tr]){
tab[i%tr]=[]
};
if(v.textContent){
tab[i%tr].push(v.textContent)
};
v.textContent="";
})
tab.forEach((v,i)=>{
v.forEach((w,j)=>{
tb[j*tr+i].textContent=w;
})
})
})
</script>
</body>
</html> |
