The method **`indexOf()`** finds the index of the first occurrence of an element in the list with the same value as the given element.

#    
#  Syntax
```
list_name.indexOf(value);
```

#    
#  Parameter

- **`value`**: represents the element whose index is to be found

##   
## Return value
The method `indexOf()` returns the index of the first occurrence of the element in the list if found. Otherwise, it returns -1.

##   
## Code
The following code shows how to use the `indexOf()` method in Dart:

void main(){
// Creating list
  var myList = [20, 15, 37, 23, 60, 50, 20];
  // Item to be found
  int searchItem = 37;
  // Stores the index in variable found
  int found =  myList.indexOf(searchItem);

  if (found != -1) {
    print("$searchItem is found at index $found");
  } else {
    print("$searchItem is not present in the list");
  }
}

> Note: The method `indexOf()` returns -1 if the item is not found in the list.

What is List indexOf() method in Dart?

Find the first occurrence index of an element in a Dart list using indexOf(); returns -1 if not found.