Can i replace two strings with one string simultaneously located in different id

Question

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Answer 1

To be clear, you have something like:

<p id="foo">Some text here</p>
<p id="bar">Different text</p>

And you want to replace both of those with "this new text" correct?

what you want is document.querySelectorAll().
It returns an array of nodes that match the selectors.
var nodes = document.querySelectorAll("#foo, #bar");
for(var i = 0; i < nodes.length; i++) {
nodes[i].innerHTML = "this new text";
}

If you use the jQuery library this becomes even simpler:
$("#foo, #bar").html("this new text");

Answer 2

Thanks it worked