Posted By
Bajarangi soft ,
Posted On 24-09-2020
The copyWithin() method copies array elements to another position in the array, overwriting the existing values.
This method will never add more items to the array.
Syntax and Usage
array.copyWithin(target, start, end)
Parameter Values
target -> Required. The index position to copy the elements to
start -> Optional. The index position to start copying elements from (default is 0)
end -> Optional. The index position to stop copying elements from (default is array.length)
var languages = ["PHP", "JAVASCRIPT", "PYTHON", "C++"];
document.getElementById("demo").innerHTML = languages;
function languages_function() {
document.getElementById("demo").innerHTML = languages.copyWithin(2,0);
}
<script>
var fruits = ["Banana", "Orange", "Apple", "Mango", "Kiwi", "Papaya"];
document.getElementById("demo").innerHTML = fruits;
function myFunction() {
document.getElementById("demo").innerHTML = fruits.copyWithin(2,0,2);
}
</script>
<!DOCTYPE html>
<html>
<head>
<title>How To Use Array copyWithin() Function In JavaScript</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<br>
<br>
<div class="text-center">
<h1>Array copyWithin() Function In JavaScript</h1>
</div>
<br>
<div class="well">
<button class="btn btn-primary" onclick="languages_function()">Click it</button>
<h1 id="demo"></h1>
</div>
<br>
</div>
</body>
</html>
<script>
var languages = ["PHP", "JAVASCRIPT", "PYTHON", "C++"];
document.getElementById("demo").innerHTML = languages;
function languages_function() {
document.getElementById("demo").innerHTML = languages.copyWithin(2,0);
}
</script>