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What is the best way to do optional function parameters in JavaScript?
To include optional function parameters in JavaScript, you can try the following,
function myFunc(a, b = 0) {
// function body
}Example
You can try to run the following code to learn how to include optional function parameters −
<html>
<body>
<script>
// default is set to 1
function inc(val1, inc = 1) {
return val1 + inc;
}
document.write(inc(10,10));
document.write("<br>");
document.write(inc(10));
</script>
</body>
</html>
Updated on: 23-Jun-2020
163 Views
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