Memory Leak In Javascript, Functions Inside Loop

I am looping over a response that I got from an ajax response, the response is an array containing 1000 objects , this response is used to created an html table with 1000 rows : 1s

Solution 1:

1000 table entries for modern web browsers should not cause any issue.

Here I'm adding 10,000 items into a table without ram problems. The reason why it's fast is because I build up the list inside a detached DOM element, then attach when done.

Your problem might be just down to DOM draw issue, the browser having to redraw on all your updates.

Another thing I noticed, for (var i in msg.myObjects) depending on what your msg.myObjects contains this is not a good thing to use. If you can use modern JS,. for (const i of msg.myObjects) is better.

var table = document.querySelector("table");

var tbody = document.createElement("tbody");

functionaddLine (txt) {
  var tr = document.createElement("tr");
  var td = document.createElement("td");
  tr.appendChild(td);
  td.innerText = txt;
  tbody.appendChild(tr);
}

for (var l = 1; l <= 10000; l += 1) {
  addLine("This is Line " + l + ", and some extra text");
}

table.appendChild(tbody);

<table><thead><tr><th>Test</th></tr></thead></table>