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What are Rest parameters in JavaScript?
rest
ES6 brought rest parameter to ease the work of developers. For arguments objects, rest parameters are indicated by three dots … and precedes a parameter.With this, set indefinite number of arguments as an array, which areArray instances.
Example
Let’s see the following code snippet:
<html>
<body>
<script>
function addition(…numbers) {
var res = 0;
numbers.forEach(function (number) {
res += number;
});
return res;
}
document.write(addition(3));
document.write(addition(5,6,7,8,9));
</script>
</body>
</html>
Updated on 09-Jan-2020 06:55:29
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