The _.isFunction() function is used to check whether the given object is function or not. It returns a Boolean value True if the given object is a function and returns False otherwise.
Syntax:
_.isFunction( object )
Parameters: This function accepts single parameter as mentioned above and described below:
- object: It contains the value of object that need to be check whether the object is function or not.
Return Value: It returns True if the given object is function and False otherwise.
Example 1:
<!DOCTYPE html> <html>
<head>
<script type="text/javascript" src=
</script>
</head>
<body>
<script type="text/javascript">
console.log(_.isFunction(function (element) {
return element % 2 != 0;
}));
console.log(_.isFunction(function (n) {
return n < 2 ? n : fib(n - 1) + fib(n - 2);
}));
</script>
</body>
</html>
|
Output:
Example 2:
<!DOCTYPE html> <html>
<head>
<script type="text/javascript" src=
</script>
</head>
<body>
<script type="text/javascript">
console.log(_.isFunction(alert));
console.log(_.isFunction(console.log));
console.log(_.isFunction('GeeksgorGeeks'));
</script>
</body>
</html>
|
Output: