How to find out the caller function in JavaScript?
In this article, we see the methods to find out the caller function in Javascript. Sometimes, the developer may want to modify how a function works on the basis of its caller function. To find out the caller function name, we will use the Function object’s caller property.
Property:
Here, the Function object is replaced by the name of the function of which we want to know the parent function name.
Example 1: When the below code is executed, we can see the name of the parent function being logged out.
javascript
<script>
function Foo() {
console.log(Foo.caller.name);
}
function Bar() {
Foo();
}
Bar();
</script>
|
Output:
Bar
Example 2: Suppose we call the Foo function from multiple functions.
javascript
<script>
function Foo() {
console.log(Foo.caller.name);
}
function Geeks() {
Foo();
}
function Fun() {
Foo();
}
function Sam() {
Foo();
}
Geeks();
Fun();
Sam();
</script>
|
Output:
Geeks
Fun
Sam
You can know more about the parent function from the property Function.caller
Last Updated :
26 Dec, 2022
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