revision:
The repeat() method returns a string with a number of copies of a string. It returns a new string, but does not change the original string.
string.repeat(count)
Parameters:
: required. The number of copies.
<p>repeat() returns a new string with a number of copies of a string:</p>
<p id="demo"></p>
<p>repeat() is not supported in Internet Explorer.</p>
<script>
let text = "Hello world!";
let result = text.repeat(2);
document.getElementById("demo").innerHTML = result;
</script>
repeat() returns a new string with a number of copies of a string:
<div>
<p>repeat() returns a new string with a number of copies of a string:</p>
<p id="repeat-1"></p>
<p id="repeat-2"></p>
<p id="repeat-3"></p>
<p id="repeat-4"></p>
<p id="repeat-5"></p>
<p id="repeat-6"></p>
</div>
<script>
let text = "Hello world!";
document.getElementById("repeat-1").innerHTML = "string : " + text;
let result = text.repeat(2);
document.getElementById("repeat-2").innerHTML = "result : " + result;
let result1 = text.repeat(4);
document.getElementById("repeat-3").innerHTML = "result : " + result1;
let text1 = " Hello world! ";
document.getElementById("repeat-4").innerHTML = "string : " + text1;
let result2 = text1.repeat(2);
document.getElementById("repeat-5").innerHTML = "result : " + result2;
let result3 = text1.repeat(4);
document.getElementById("repeat-6").innerHTML = "result : " + result3;
</script>