.indexOf()

In Dart, the .indexOf() method returns the first occurrence of the given element in a list. If the element is not found, the method will return -1.

Syntax

list_name.indexOf(element);

• list_name: The name of the list where the element is searched.
• element: The value whose index is searched for in the list.

Example

Here is an example of the .indexOf() method:

void main() {
  List<String> colors = ['blue', 'yellow', 'red', 'green', 'orange', 'pink'];

  int index = colors.indexOf('red');

  print(index);
}

The output for the above example is as follows:

2