The spread syntax allows us to spread an array or any iterable to be expanded across zero or more arguments in a function call.
Following is the code for spread operator in function calls in JavaScript −
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.result {
font-size: 20px;
font-weight: 500;
color: blueviolet;
}
</style>
</head>
<body>
<h1>Spread operator in function calls</h1>
<div class="result"></div>
<br />
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to use spread operator to pass parameters to add() function</h3>
<script>
let resEle = document.querySelector(".result");
let BtnEle = document.querySelector(".Btn");
function add(a, b, c, d) {
return a + b + c + d;
}
let arr = [1, 2, 3, 4];
BtnEle.addEventListener("click", () => {
resEle.innerHTML = add(...arr);
});
</script>
</body>
</html>Output
On clicking the ‘CLICK HERE’ button −
